Voice AI Cost Calculator
Calculate precise costs for your voice AI application using real-time pricing from major providers. Get detailed breakdowns and optimize your stack for cost efficiency.
Real-time pricing comparison
Accurate cost calculations
Provider optimization insights
Provider Selection
Cost Configuration
Calculation Assumptions
0% (User speaks more)100% (LLM speaks more)
Cost Breakdown
Transcription30.6%
LLM53.8%
Voice15.3%
Hosting0.4%
Cost Details
Transcription Cost$0.0900
LLM Cost$0.1584
Voice Cost$0.0450
Hosting Cost$0.0011
Total Cost$0.2945
$0.0196 per minuteFinal prices might be higher!
Token Usage
Input Tokens59,475
Output Tokens975
Total Tokens60,450
Latency Calculator
Analyze and optimize the latency components of your voice AI pipeline. Adjust individual components to see their impact on total latency.
825ms
Total Voice-to-Voice Latency
0ms1000ms
Input Path
Input Path
135ms
16.4%
AI Processing
AI Processing
555ms
67.3%
Output Path
Output Path
135ms
16.4%
Latency Performance Guide
Fast
≤ 200ms
Acceptable
201-500ms
Slow
> 500ms
Latency Breakdown Configuration
Input Path
ms
ms
ms
ms
ms
ms
AI Processing
ms
ms
ms
ms
Output Path
ms
ms
ms
ms
ms
ms
Formula Documentation
Understand how costs and latencies are calculated in your voice AI application. All calculations are based on industry-standard formulas and real-world usage patterns.
Cost Calculations
LLM Costs
Input Cost:
Calculated by multiplying the number of input tokens by the provider's rate per token.
Input Cost = Input Tokens × Input Rate per TokenOutput Cost:
Calculated by multiplying the number of output tokens by the provider's rate per token.
Output Cost = Output Tokens × Output Rate per TokenTotal LLM Cost:
The sum of input and output costs.
Total LLM Cost = Input Cost + Output CostSTT Costs
Transcription Cost:
Determined by the provider's rate per minute of audio processed.
STT Cost = Conversation Length (minutes) × Rate per MinuteTTS Costs
Voice Cost:
Calculated by multiplying the number of characters in the text by the provider's rate per character.
TTS Cost = Characters Generated × Rate per CharacterHosting Costs
Infrastructure Cost:
Calculated based on vCPU usage and the number of concurrent agents.
Hosting Cost = (vCPU Cost × Conversation Length) ÷ Agents per vCPUToken Calculations
Input Tokens:
Quadratic growth formula accounting for context accumulation in conversations.
Input Tokens = (Words/Min × Tokens/Word ÷ Turns/Min) × (Turns/Min × Convo Length) × (Turns/Min × Convo Length + 1) ÷ 2Output Tokens:
Calculated based on LLM speaking ratio and conversation length.
Output Tokens = Words/Min × Tokens/Word × LLM Speech Ratio × Convo LengthLatency Calculations
Total Voice-to-Voice Latency
The complete end-to-end latency chain from user's voice input to receiving the agent's voice output.
Total Latency = Mic Input + Opus Encoding + Network Transit + Packet Handling + Jitter Buffer + Opus Decoding + Transcription + LLM Inference + Sentence Aggregation + Text-to-Speech + Opus Encoding + Packet Handling + Network Transit + Jitter Buffer + Opus Decoding + Speaker Output