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TTS-1 — and what?

Pricing per million tokens, context window, capabilities — pulled from each provider's public docs. All 1 are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.

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TTS-1
openai/tts-1
Provider
OpenAI
Family
Modality
audio-tts
Context window
Max output
Released
2026-05-22
License
Open-weight
Per 1K chars
$0.015 /1K ch
Tools
Streaming
Vision
JSON mode
Reasoning
Prompt caching
Batch API
Try it
View model →
TTS-1
openai/tts-1
Full spec →

OpenAI's text-to-speech model optimized for real-time use with low latency.

Strengths
  • Natural speech synthesis
Use cases
VoiceoversIVRAudiobooks