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Rime API Changelog

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2025-10-15
  • Arcana is now available via (non-json) websockets users.rime.ai/ws.
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2025-10-14
  • Arcana on-prem images with tag 20251014: Fixed a bug related to sample rate.
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2025-10-13
  • Arcana on-prem images with tag 20251013: Arabic support.
  • Arcana on-prem images with tag 20251013: General performance improvements.
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2025-10-10
  • Api on-prem image with tag 20251010: Uses https instead of http in the external calls to rime.optimize.ai to acquire licenses and track usage.
  • ⚠️ When upgrading to this image you may have to update your firewall settings to account for the new URLs (see docs).
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⚠️ 2025-09-30
  • We have made breaking changes in voice details api (https://users.rime.ai/data/voices/voice_details.json)
  • In the voice details API, the field model_id has been renamed to modelId and name have been renamed to speaker for better clarity.
  • In the voice details API, the field region has been renamed to dialect for better clarity.
  • The language field value has been changed from short codes (e.g., eng) to human-readable names (e.g., english).
  • A new field lang has been added to retain the short language code (e.g., eng).
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2025-09-29
  • Arcana on-prem images with tag 20250929: quality improvements.
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2025-09-27
  • Arcana on-prem images with tag 20250927: quality improvements.
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2025-09-25
  • Arcana on-prem English image with tag 20250925: performance improvements and general model stability enhancements.
  • Added two new Australian flagship voices:
    • eucalyptus
    • marlu
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2025-09-24
  • Arcana on-prem images with tag 20250924: performance improvements.
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2025-09-17
New api onprem image us-docker.pkg.dev/rime-labs/api/service:20250917 released.
  • api image now supports multiple model backends.
  • /health endpoint on the api image now reports model status.
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2025-09-13
  • Both /ws and /ws2 support the query param saveOovs, allowing tts users to track which words in their text are out-of-vocabulary on the Speech QA dashboard.
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2025-09-13
  • Arcana on-prem images from 20250913 now provide better latency and can run on H100 MIG (3g.40gb).
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2025-09-09
  • Arcana on-prem images from 20250909 now provide /livez and /readyz endpoints for liveness and readiness checks.
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2025-09-08
  • Arcana on-prem images from 20250908 now use 16-bit little endian for PCM and WAV.
  • Arcana on-prem images from 20250908 now support G-711 μ-law as an audio codec.
  • Arcana on-prem images from 20250908 now support the speedAlpha option for time scaling.
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2025-09-02
  • saveOovs parameter added to all mistv2 tts endpoints, enabling users to have out-of-vocabulary words logged to their Speech QA dashboard for review and addition to the mist lexicon.
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2025-08-01
  • Added French and German language support via the lang parameter in WebSocket JSON APIs. The /ws2 api now has full language parity with the /ws and http tts endpoints.
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2025-07-31
  • Added Spanish language support via the lang: spa parameter in WebSocket JSON APIs.
  • Enhanced text segmentation with new segment parameter:
    • Added segment query parameter with three modes: “immediate”, “never”, and “bySentence” (default)
    • Deprecated immediate boolean parameter (still supported for backward compatibility)
    • Improved control over text processing and synthesis timing
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2025-05-27
  • The <FLUSH> command is now available on both the the websockets and websockets-json apis, allowing for immediate audio synthesis of all tokens in the buffer.
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2025-04-24
  • We’ve launched Arcana — a new model for expressive, natural voice synthesis. Available now with modelId: arcana.
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2025-03-28
  • The lang ID spa-mx has been added. Using this accesses the same spanish languages but uses pesos instead of dolares for currency.
  • New lang: fra has been added. We now have French voices available on the dashboard and via API.
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2025-03-26
  • The spell() function now works for Spanish. Try it out! “El nombre se escribe spell(Isabella).”
  • Fixed a bug where silence information is not processed properly when pauseBetweenBrackets is True
  • The url demo-api.rime.ai has been deprecated. Please use demo.rime.ai instead if you are using the demo API.
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