Lowest listed unit cost
OpenAI TTS-1$15 per 1M characters.
Use case calculator
Voice agent API Cost Calculator
Estimate speech generation costs for AI voice agents and call automation.
Cheapest eligibleCalculating
Balanced optionCalculating
CoverageCalculating
| Provider / model | Estimated monthly cost | Unit price | Context | Rate limit | Signal |
|---|
Excluded by your requirements
| Provider / model | Status | Reason |
|---|
How to Read This Estimate
The preset starts with realistic monthly usage assumptions for voice agent. Adjust tokens, request rate, context window, and required capabilities to match your product before choosing a provider.
Recommended Starting Points
Balanced comparison pick
Google Cloud TTS Neural2 voices$16 per 1M characters.
Useful alternative
Amazon Polly Neural voices$16 per 1M characters.
Pricing Details
| Provider | Model | Category | Pricing | Context | Capabilities |
|---|---|---|---|---|---|
| OpenAI | TTS-1 | tts | $15 / 1M chars | Plan based | Plan based |
| ElevenLabs | Eleven Multilingual v2 | tts | $180 / 1M chars | Plan based | Plan based |
| Google Cloud TTS | Neural2 voices | tts | $16 / 1M chars | Plan based | Plan based |
| Amazon Polly | Neural voices | tts | $16 / 1M chars | Plan based | Plan based |
Limits and Notes
Prices can change and rate limits are often account-tier specific. Use this calculator for planning, then confirm final numbers on the official provider pages before committing budget.
FAQ
How is monthly cost calculated?
For token APIs, monthly cost is input tokens times input price plus output tokens times output price. For TTS, it uses monthly characters. Vector database estimates depend more heavily on storage and read/write usage.
Why are some models excluded?
The calculator excludes models that do not satisfy required context window, requests per minute, streaming, JSON mode, or tool calling constraints.
Are these prices guaranteed?
No. The dataset is designed for comparison and should be checked against official pricing pages before production decisions.
Data Sources and Last Checked
- OpenAI official pricing · checked 2026-05-23
- ElevenLabs official pricing · checked 2026-05-23
- Google Cloud TTS official pricing · checked 2026-05-23
- Amazon Polly official pricing · checked 2026-05-23