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Inworld TTS 1.5 Max — 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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Inworld TTS 1.5 Max
inworld/tts-1.5-max
Provider
Inworld
Family
Inworld TTS
Modality
audio-tts
Context window
Max output
Released
2026-05-22
License
Proprietary
Per 1K chars
$0.035 /1K ch
Tools
Streaming
Vision
JSON mode
Reasoning
Prompt caching
Batch API
Try it
View model →
Inworld TTS 1.5 Max
inworld/tts-1.5-max
Full spec →

Highest-quality text-to-speech with under 200ms latency, emotion control, and 15-language support.

Strengths
  • Natural speech synthesis
Use cases
VoiceoversIVRAudiobooks