Docs/Changelog
Changelog.
Every notable change to the API, model, and SDKs. Breaking changes are versioned (currently aayush-tts-1) and earlier major versions stay available for at least twelve months.
2026-06-14 · live streaming demo, docs site launch
- New: sentence-by-sentence streaming is live in the demo — audio starts playing before the full text is rendered.
- Roadmap: the streaming API for your own key — HTTP
stream: trueonPOST /v1/audio/speechand the full-duplex WebSocket atwss://api.leanvoice.ai/v1/stream— is documented and rolling out; not yet on the current infrastructure. See streaming docs. - New: developer docs site at /docs with REST, streaming, SDK, and error reference.
- New: ephemeral-token endpoint
POST /v1/ephemeral_tokensfor safe browser-side use. - Changed: single global USD price ($0.003 / min) replaces market-specific pricing.
2026-05-22 · Distilled model refresh
- New: 117M-parameter student model swaps in seamlessly under
model: aayush-tts-1. ~22% lower compute, same audible quality. No client changes needed. - Improved: Hindi and Spanish prosody on long-form narration after two additional fine-tuning passes.
2026-04-08 · Expression tags expanded
- New:
<whisper>,<shout>, and parameterised<pause:ms>tags. - New: three additional voices (Noor, Aria, Orion) reach GA.
2026-03-01 · First public beta
- New: REST endpoint at
/v1/audio/speechwith seven voices and twelve languages. - New: OpenAI-compatible client surface.