Top NLP companies in 2026 (vetted shortlist)
A vetted shortlist of the top NLP companies in 2026, sorted by what they actually do best - classic ML pipelines, LLM-based language work, and document understanding - with honest pricing and fit notes.

In this article
Short answer
Evaluating NLP companies comes down to a production track record with real users, depth in a specific language task, and a documented accuracy evaluation process. RaftLabs meets this bar by shipping semantic search, conversational assistants, and document understanding into production, including Call Eva, its own voice AI product that cuts inbound call costs up to 80%, 4.9/5 on Clutch, at $29-49/hr from $25,000.
Key takeaways
- NLP is not one job. Classic ML pipelines (classification, entity extraction, sentiment) and LLM-based work (semantic search, summarization, conversational NLP) need different skills. A firm strong in one is not automatically strong in the other.
- The LLM era changed what an NLP company is. Older specialists lead with trained models and labelled data; newer teams lead with prompting, retrieval, and evaluation. Ask which approach a vendor defaults to and why.
- Ask any NLP company to show a live feature in your language task, not a benchmark. A sentiment model and a document-understanding pipeline solve very different problems.
- NLP output drifts. Language changes, model versions change, and accuracy slips on new data. Budget for evaluation and re-training or re-tuning in year two, not just the launch.
- Match the vendor to your data. If your value comes from proprietary domain text, a firm that can build data pipelines matters more than one that can only call a model API.
Most buyers treat "NLP companies" as one category and shop them like interchangeable vendors. They are not interchangeable. Natural language processing is a set of very different problems wearing one label. According to Grand View Research, the global NLP market was valued at USD 59.70 billion in 2024 and is projected to reach USD 439.85 billion by 2030 at a CAGR of 38.7% - a market expanding so fast that the number of vendors claiming NLP capability has outpaced the number that have actually shipped it in production. Building a classifier that routes support tickets has almost nothing in common with building a semantic search engine over ten years of contracts, or a sentiment pipeline that scores millions of reviews, or a conversational assistant that answers customers in plain language. A firm that is excellent at one of these is often mediocre at the next. The label hides the difference. The first job of this shortlist is to put the difference back.
The second filter is the LLM shift. A few years ago, an "NLP company" meant a team that trained machine-learning models on labelled data and shipped a classifier or an extractor. Today the term also covers teams that build with large language models, where prompting, retrieval, and evaluation replace much of the training. Both approaches are still valid. Classic pipelines are cheaper, faster, and more predictable for high-volume, narrow tasks. LLM-based methods handle open-ended language work that used to be impractical. The best vendors know when to reach for which. According to McKinsey, a large majority of companies now use AI in at least one business function, yet many pilots stall before production. The most common reason is not the model. It is starting the build with the wrong kind of partner for the language task in front of them.
The eight NLP companies on this list are AI Superior, Hidden Brains, RaftLabs, Imaginary Cloud, Innablr, Intersog, Intetics, and Intuz. RaftLabs is on this list. We wrote our own entry with the same directness we applied to everyone else.
How we evaluated the top NLP companies
| Criterion | What we looked for |
|---|---|
| Production track record | At least one live NLP feature with real users, not a benchmark score or research demo |
| Language-task depth | Clear strength in a specific task - classification, extraction, sentiment, search, summarization, or conversation - rather than generic "AI" claims |
| Pricing transparency | Publicly listed rates or a clear engagement model communicated on inquiry |
| Client profile fit | Ability to serve the buyer's company size, industry, and risk tolerance |
| Output evaluation | A documented process for measuring NLP accuracy before and after model or data changes |
No company paid for placement on this list.
1. AI Superior
AI Superior is an AI and data-science consultancy based in Darmstadt, Germany. It delivers end-to-end custom AI development - computer vision, NLP, and generative AI - as a research-led specialist rather than a general software shop. NLP sits squarely inside its remit, which is why it opens a list about language.
The reason AI Superior earns the top spot is depth in custom AI where language is one of several core competencies. Plenty of firms can call a model API; fewer can look at domain-specific text and decide whether a trained classifier, a custom entity model, or a generative-AI approach with retrieval is the right tool, then build and evaluate it. Its consultancy framing means it treats problem definition and data work as part of the engagement rather than someone else's job.
The trade-off is that AI Superior is a consultancy and AI specialist, not a full product studio. It builds the language intelligence well. If you also need a polished consumer product, a mobile app, and long-term product ownership around that intelligence, plan to pair it with product engineering or choose a firm that carries both.
Notable work - AI Superior does not publish independently verified client outcomes here. Its public work centers on custom AI, computer-vision, NLP, and generative-AI projects; the portfolio is organized by task and capability rather than named logo.
Pricing signal - AI Superior does not list rates publicly. Engagements are project-based; confirm scope and cost directly.
What to watch - AI Superior is strongest as an AI and data-science specialist. If your project is fundamentally a full product build where NLP is one feature among many, you will need to add product engineering and long-term ownership around it.
Best for: Companies that need custom NLP and AI models built and evaluated by a research-led specialist
Specialization: Custom AI, computer vision, NLP, generative AI
Pricing: Not publicly listed; project-based, confirm directly
Clutch: Verify on Clutch before engaging
2. Hidden Brains
Hidden Brains is a software development company based in Ahmedabad, India. It builds web, mobile, and enterprise software and digital platforms across a broad range of industries. On a list about language processing, it reads as a general development partner rather than an NLP specialist, so its relevance runs through the product and engineering layer around a language feature.
For "NLP companies" shopped by a buyer who wants software built at offshore rates, Hidden Brains answers the delivery-capacity question. Its enterprise and platform engineering can wrap an NLP feature - a search box, a chatbot, a document tool - inside a shipped application. The language intelligence itself, and any NLP-specific evaluation, is where a buyer should verify depth rather than assume it from the general portfolio.
The trade-off is NLP specialization. Hidden Brains is a broad software firm, so for custom model training, entity extraction with an audit trail, or accuracy evaluation as the core deliverable, confirm the assigned team has shipped comparable language work before scoping.
Notable work - Hidden Brains does not publish independently verified NLP case studies here. Its public positioning centers on web, mobile, and enterprise software and digital platform development.
Pricing signal - Hidden Brains does not disclose pricing publicly. Request a scoped quote; structure and cost are confirmed directly.
What to watch - Hidden Brains is a general software development firm, not an NLP specialist. Its delivery capacity is real, but verify language-specific experience and evaluation depth before an NLP-centric build.
Best for: Buyers who want offshore capacity to build an NLP feature inside a shipped application
Specialization: Web, mobile, and enterprise software, digital platforms
Pricing: Not publicly disclosed; request a quote
Clutch: Verify on Clutch before engaging
3. RaftLabs
RaftLabs is a full-stack product development firm that builds NLP into real products: semantic search, conversational assistants, document understanding, entity extraction, and summarization, wired into applications people actually use. Founded in 2015, its NLP work includes Call Eva, its own voice AI product for business phone lines. One team owns the whole build. There is no handoff between an NLP group and a separate engineering group.
RaftLabs sits at number three on purpose. On a list about language processing, a dedicated AI specialist genuinely leads on modeling. AI Superior goes deeper on custom AI and language modeling than a product studio does. Where RaftLabs is the strong option is turning language intelligence into a shipped product. Many NLP engagements produce a model that works in a notebook and then stall because nobody owns the interface, the integrations, the evaluation harness, and the long-term maintenance around it. RaftLabs is built for exactly that gap. It has met the real production failure modes: retrieval that returns the wrong passages, summaries that pass automated checks but miss the point, extraction accuracy that slips on a new document format, and API costs that climb quietly with usage.
Its 4.9/5 rating on Clutch reflects the direct-client model. One team, one account, one line of accountability from discovery to deployment. That structure is the differentiator, not a slogan attached to it. For a mid-market company that wants NLP working inside a product rather than sitting in a research report, that single chain of ownership is the reason to shortlist RaftLabs.
Notable work - Call Eva, RaftLabs' own voice AI product, handles inbound business calls with 24/7 coverage and language understanding at its core - cutting inbound call costs up to 80% and roughly doubling call-resolution speed. Its broader product portfolio documents search, chat, and document-handling work in shipped applications.
Pricing signal - RaftLabs operates at $29-$49/hr for most engagements, with fixed-price structures available for well-defined scopes. Minimum engagements typically start around $25,000 for a focused NLP feature and $50,000+ for a full application with evaluation infrastructure included.
What to watch - RaftLabs is built for NLP delivered inside a product by one team. If you need only a research-grade custom model with no product around it, a data-science specialist like AI Superior may go deeper on the modeling alone. RaftLabs is also not the fit if you need a team larger than 15 engineers or a parallel, multi-workstream platform staffed by 50+ people. For mid-market companies building real NLP products, that is rarely the constraint.
Best for: Mid-market businesses ($1M-$100M revenue) building NLP into a shipped product with one accountable team
Specialization: Semantic search, conversational NLP, document understanding, extraction, summarization
Pricing: $29-$49/hr, fixed-price engagements
Clutch: 4.9/5
4. Imaginary Cloud
Imaginary Cloud is a software development and digital acceleration firm with offices in London, UK, and Lisbon, Portugal. It delivers custom development, product design, cloud-native engineering, and applied AI and ML for enterprises and scale-ups. For NLP, its applied-AI line is the relevant thread, wrapped in genuine product and design capability.
Among NLP companies, Imaginary Cloud is the one to shortlist when the language feature has to ship as a well-designed product - a search or chat experience, a document tool - and the buyer wants applied AI/ML delivered alongside product design and cloud-native engineering rather than as a standalone model. Its European base suits buyers who want that proximity and design polish.
The trade-off is NLP depth versus breadth. Imaginary Cloud is a product and applied-AI firm rather than a language-modeling specialist, so for custom model training, compliance-grade extraction, or accuracy evaluation as the core work, verify the assigned team's NLP-specific experience.
Notable work - Imaginary Cloud states it has operated since 2010 and runs UK and Portugal (Lisbon and Coimbra) offices. It does not publish independently verified NLP case studies here; its public work centers on custom development, product design, cloud-native engineering, and applied AI/ML.
Pricing signal - Imaginary Cloud does not disclose pricing publicly. Engagements are quote-based; confirm scope and cost directly.
What to watch - Imaginary Cloud's strength is product-led applied AI, not deep language modeling. It fits NLP that ships as a designed product; for custom model work or evaluation-heavy extraction, verify NLP depth first.
Best for: Companies shipping an NLP feature as a well-designed product with applied AI/ML
Specialization: Custom development, product design, cloud-native engineering, applied AI/ML
Pricing: Not publicly disclosed; quote-based
Clutch: Verify on Clutch before engaging
5. Innablr
Innablr is a cloud-native consultancy based in Melbourne, Australia. Its focus is Kubernetes platforms, Google Cloud migration, site reliability engineering, DevOps and DORA practices, FinOps, and data engineering. On a list about NLP, it is the odd one out: Innablr is an infrastructure and platform firm, not a language-processing specialist, so its relevance is the layer beneath an NLP system rather than the model itself.
Where Innablr fits an NLP conversation is deployment and reliability. An NLP feature at production scale needs the cloud platform, the data pipelines, and the SRE and cost discipline to run reliably - and that is exactly Innablr's territory, especially on Google Cloud and Kubernetes. The language modeling, evaluation, and NLP-specific engineering would need to come from elsewhere.
The trade-off is direct. Innablr does not present as an NLP builder, so for classification, extraction, search, or conversational work, it is not the natural choice; consider it only when the hard part is the cloud platform and data engineering under an NLP system, and pair it with a language specialist.
Notable work - Innablr was founded in 2016 and centers on Google Cloud, Kubernetes, and SRE work. It does not publish NLP case studies; treat language-processing experience as outside its stated focus.
Pricing signal - Innablr does not disclose pricing publicly. Engagements are project or consulting-based; confirm scope and cost directly.
What to watch - Innablr is a cloud-native and data-engineering consultancy, not an NLP firm. Its value is the platform and reliability layer under a language system - do not scope the NLP modeling itself to it without a language specialist alongside.
Best for: Buyers who need cloud-native platform and reliability engineering under an NLP system
Specialization: Kubernetes, Google Cloud migration, SRE, DevOps, FinOps, data engineering
Pricing: Not publicly disclosed; project or consulting-based
Clutch: Verify on Clutch before engaging
6. Intersog
Intersog is a custom software and AI engineering firm headquartered in Chicago, Illinois. It offers web and mobile development, cloud and SaaS builds, and IT staff augmentation, delivered with nearshore teams in Canada, Mexico, and Israel. For NLP, its AI engineering line plus a US base and nearshore delivery is the relevant combination.
Among NLP companies, Intersog is the one to shortlist when the language feature has to live inside a custom software or SaaS build and the buyer wants a US point of contact with nearshore delivery capacity. Its AI engineering and staff-augmentation model can add language capability to an existing product team or carry a build that includes an NLP component.
The trade-off is NLP-specific depth within a broad services catalog. AI is one line among custom software, cloud, and staffing, so confirm the assigned team has shipped comparable language work - classification, extraction, search, or conversation - and how it evaluates accuracy before you sign.
Notable work - Intersog states it was founded in 2005 and runs nearshore R&D offices across the USA, Canada, Mexico, and Israel. It does not publish independently verified NLP case studies here; its public work spans custom software, cloud/SaaS, and AI engineering.
Pricing signal - Intersog does not disclose pricing publicly. Engagements are quote-based; confirm scope and cost directly.
What to watch - Intersog's strength is custom software and AI engineering with nearshore delivery. For a lean single-task NLP feature or research-grade model work, verify that the specific team has shipped comparable language work, since AI is one line in a wide catalog.
Best for: Buyers embedding an NLP feature in a custom software or SaaS build with US contact and nearshore delivery
Specialization: Custom software, web and mobile, cloud/SaaS, AI engineering, staff augmentation
Pricing: Not publicly disclosed; quote-based
Clutch: Verify on Clutch before engaging
7. Intetics
Intetics is a custom software development and distributed-team outsourcing firm with a US base in Naples, Florida, and operations in Germany. It runs a Remote In-Sourcing model and builds enterprise applications, AI and ML, and cloud and DevOps solutions. For NLP, its AI/ML practice inside a distributed-team delivery model is the relevant thread.
Among NLP companies, Intetics is the one to shortlist when the language work sits inside a larger enterprise application and the buyer wants a managed distributed team rather than individual contractors. Its AI/ML line can carry NLP components - classification, extraction, or search inside an enterprise system - with the surrounding engineering and cloud work handled by the same firm.
The trade-off is NLP specialization within a broad enterprise catalog. Intetics is an enterprise software and outsourcing firm first, so verify the assigned team's language-processing depth and evaluation practice, and confirm how much of the work is NLP-specific versus general application engineering.
Notable work - Intetics states it was founded in 1995 and holds ISO/IEC 42001 (AI management system) certification per its own materials. It does not publish independently verified NLP case studies here; its public work spans enterprise applications, AI/ML, and cloud/DevOps.
Pricing signal - Intetics does not disclose pricing publicly. Engagements are quote-based; confirm scope and cost directly.
What to watch - Intetics' strength is enterprise software and distributed-team delivery with an AI/ML line. For a focused, single-task NLP feature or research-grade modeling, verify the specific team's language-processing depth before scoping.
Best for: Enterprises embedding NLP inside a larger application with a managed distributed team
Specialization: Enterprise applications, AI and ML, cloud and DevOps, distributed-team outsourcing
Pricing: Not publicly disclosed; quote-based
Clutch: Verify on Clutch before engaging
8. Intuz
Intuz is an IT consulting and software firm based in San Ramon, California, with a development center in Ahmedabad, India. It delivers iOS, Android, and cross-platform apps, web, cloud, and IoT solutions. On a list about NLP, it reads as a mobile and cloud product firm rather than a language specialist, so its relevance is the application layer around an NLP feature.
Among NLP companies, Intuz is the one to shortlist when the language capability needs to ship inside a mobile or cloud product - a chatbot in an app, a search feature, an IoT-connected assistant - and the buyer wants a US-facing firm with offshore delivery. Its app and cloud engineering can wrap an NLP feature in a real product across platforms.
The trade-off is NLP depth. Intuz's core is mobile, web, cloud, and IoT delivery, not language modeling, so for custom NLP models, extraction with evaluation, or accuracy measurement as the core work, verify the assigned team's language-processing experience before scoping.
Notable work - Intuz states it was founded in 2008, is ISO 9001 certified, and is an AWS Consulting Partner per its own materials. It does not publish independently verified NLP case studies here; its public work centers on mobile, web, cloud, and IoT development.
Pricing signal - Intuz does not list rates publicly. Request a scoped quote; structure and cost are confirmed directly.
What to watch - Intuz is a mobile and cloud product firm, not an NLP specialist. It fits NLP that ships inside an app or cloud product; for custom model work or evaluation-heavy language tasks, verify NLP depth first.
Best for: Buyers shipping an NLP feature inside a mobile or cloud product
Specialization: iOS, Android, cross-platform apps, web, cloud, IoT
Pricing: Not publicly listed; request a quote
Clutch: Verify on Clutch before engaging
Side-by-side comparison
| Company | Primary strength | Typical engagement | Pricing |
|---|---|---|---|
| AI Superior | Custom NLP and AI models from a research-led specialist | Model development and NLP pipelines | Not listed; project-based |
| Hidden Brains | Offshore capacity for NLP features in shipped software | Enterprise and platform builds | Not listed; request quote |
| RaftLabs | NLP built into shipped products for mid-market | End-to-end product builds | $29-$49/hr |
| Imaginary Cloud | Product-led applied AI and NLP | Designed NLP products with applied AI/ML | Not listed; quote-based |
| Innablr | Cloud-native platform and reliability under NLP | Cloud, SRE, and data engineering layer | Not listed; project/consulting |
| Intersog | Custom software and AI engineering, nearshore | NLP inside custom software or SaaS builds | Not listed; quote-based |
| Intetics | Enterprise software with AI/ML, distributed teams | NLP inside enterprise applications | Not listed; quote-based |
| Intuz | Mobile and cloud product firm | NLP inside mobile or cloud products | Not listed; request quote |
The question that separates classic NLP pipelines from LLM-era approaches
The most common way buyers get this wrong is picking a company for the technology it likes rather than the task they have. A data-science specialist may reach for a trained classifier when a retrieval-augmented LLM would ship faster. An LLM-first team may reach for a large model on every request when a small, cheap classic model would handle 90% of the volume at a fraction of the cost. The label "NLP company" flattens all of this, and the wrong pick costs twice: once in fees, once in a rebuild.
Category A is custom AI and language modeling. AI Superior lives here, with Imaginary Cloud's applied AI/ML spanning into it. They are strong when your value comes from proprietary domain text and you need models built, grounded, and evaluated on your own data - classification at volume, extraction, analytics over messy records. These approaches reward genuine AI depth, but they need data work and ongoing maintenance.
Category B is product-led and build-capacity NLP. RaftLabs, Hidden Brains, Intersog, Intetics, and Intuz live closer to here, though several span both. They are strong when the language intelligence has to become a shipped, integrated product or when you need delivery capacity around it. RaftLabs delivers that product build under one accountable team; Intersog and Intetics bring custom software and AI engineering with nearshore or distributed delivery; Hidden Brains and Intuz supply offshore product and app capacity. Innablr is its own case: a cloud-native consultancy that fits the platform and reliability layer under an NLP system, not the language work itself.
Getting the approach and the engagement model right matters more than getting the brand right.
"AI is the new electricity."
Andrew Ng, founder of DeepLearning.AI
According to Grand View Research, the global natural language processing market is valued in the tens of billions of dollars and is projected to grow at a strong double-digit annual rate through the end of the decade, driven by demand for search, extraction, and conversational applications. That growth is real, but it hides a harder truth. McKinsey's State of AI research reports that most companies now use AI in at least one function, yet a large share of pilots never reach production. The gap between a promising language model and a shipped NLP feature is rarely the model. It is evaluation, integration, and the discipline to measure accuracy after every data and model change. The companies that capture the market will be the ones that built with measurement, not the ones that shipped a demo fastest.
The verdict
AI Superior for companies that need custom NLP and AI models built and evaluated by a research-led specialist. Hidden Brains for buyers that want offshore capacity to build an NLP feature inside a shipped application. RaftLabs for mid-market businesses that want NLP built into a shipped product by one accountable team. Imaginary Cloud for companies shipping an NLP feature as a well-designed product with applied AI/ML. Innablr for buyers who need cloud-native platform and reliability engineering under an NLP system. Intersog for buyers embedding NLP in a custom software or SaaS build with US contact and nearshore delivery. Intetics for enterprises embedding NLP inside a larger application with a managed distributed team. Intuz for buyers shipping an NLP feature inside a mobile or cloud product.
The decision simplifies when you are honest about three things: which language task you are building, whether your value comes from proprietary data, and how much of the product around the model you need a partner to own.
RaftLabs designs and builds NLP into real products - semantic search, conversational assistants, extraction, and document understanding - in one team. No handoff gap. 4.9/5 on Clutch. Talk to a founder about your NLP project.
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Common questions
- NLP companies build software that reads, understands, and generates human language. In practice they fall into a few groups: data-science specialists that train custom models for classification, entity extraction, and sentiment; enterprise consultancies that lead NLP and LLM strategy before a build; product firms that ship NLP features inside real applications like search, chat, and document tools; data and analytics firms that run NLP over structured enterprise data; and talent marketplaces that supply senior individual NLP engineers. The label 'NLP company' covers all of them, which is why the language task and engagement model matter more than the label.
- Classic NLP uses trained machine-learning models and rules for specific tasks: a classifier that sorts support tickets, an entity extractor that pulls names and dates from contracts, a sentiment model that scores reviews. These are accurate, cheap to run, and predictable, but they need labelled data and re-training. LLM-based NLP uses large language models to handle open-ended tasks like summarization, semantic search, and conversation with far less task-specific training. LLMs are flexible but cost more per request and can drift or hallucinate. Many production systems in 2026 combine both: a cheap classic model for high-volume routing and an LLM for the hard, open-ended cases.
- A focused NLP feature such as a sentiment classifier or an entity-extraction pipeline costs $15,000-$40,000. A production NLP application with search, summarization, evaluation, and monitoring costs $40,000-$150,000. A platform spanning document understanding, conversational NLP, and enterprise integrations costs $150,000-$500,000. Hourly rates vary: offshore and nearshore firms bill roughly $35-$99/hr, US-headquartered firms and boutique specialists bill $75-$150/hr, and senior individual engineers bill $100-$200/hr. Model API or GPU costs are separate and scale with usage - ask any finalist how they manage that running cost at production volume: model sizing per task, caching, batching, and where a cheaper model can carry the load. A vendor who cannot quantify running cost has not operated NLP at scale.
- The main tasks are text classification (routing, tagging, moderation), named entity recognition and extraction (pulling structured data out of text), sentiment and intent analysis, summarization (condensing long documents), semantic search (finding by meaning rather than keywords), conversational NLP (chat and voice assistants), and document understanding (reading forms, contracts, and reports). Most companies are strongest in a subset. A data-science specialist may excel at custom classification but not at conversational products; a product firm may excel at search and chat but not at compliance-grade extraction. Match the company's core strength to the task you are building.
- Start with three questions. First, which language task are you building - classification, extraction, sentiment, search, summarization, or conversation? Second, does your value come from proprietary domain data, and can the vendor build the pipelines to use it? Third, how clear is the use case, and how much project management can your internal team provide? Delivery-forward product firms suit clear use cases and lean teams. Strategy-forward consultancies suit new domains where the wrong approach is expensive. Individual engineers through a marketplace suit teams that already have direction and need capacity. Ask every finalist for a live feature in your task and a walkthrough of how they measure accuracy.
- Some do, some specialize. Product firms and large development companies typically work across industries. Others concentrate in a specific sector - financial services and healthcare, where compliance shapes every extraction and summary, or data-heavy sectors like CPG, logistics, and retail. If you are in a regulated industry, a firm that already understands your audit and governance requirements will move faster than a generalist learning them for the first time. If you are in a general commercial sector, breadth is fine and often cheaper.
- Ask for a live feature in your target task - classification, extraction, sentiment, search, summarization, or conversation - and walk through it. A benchmark score and a production feature are not the same, and task strength rarely transfers automatically. Then ask how they measure accuracy and what happens when it drifts: look for specifics like labelled test sets, precision and recall targets for extraction, human review pipelines, and how they detect drift after a model or data change. A company that cannot describe its evaluation process has not shipped NLP at scale.
- The right answer weighs cost, volume, accuracy needs, and data availability rather than habit. A team that defaults to an LLM for everything, or refuses to consider one, is optimizing for its own comfort rather than your result. Many strong production systems combine a cheap classic model for high-volume routing with an LLM for the hard, open-ended cases - a vendor who can explain that trade-off for your specific task has actually made the call before.
- If your value comes from proprietary domain text, the pipeline that cleans, structures, and feeds that data into the model matters as much as the model itself. Ask who owns the data work, how they handle messy or inconsistent inputs, and whether that pipeline is part of the scope or an assumption the vendor expects you to satisfy - a vendor who has not thought through this will treat it as a scope surprise mid-project.