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Xiaomi MiMo speaks an OpenAI-compatible chat API with a few dialect quirks: thinking mode is on by default, 1M context is selected with a model-ID suffix, and TTS/ASR run through chat completions instead of dedicated audio endpoints. GoModel translates the standard /v1/audio/speech and /v1/audio/transcriptions endpoints into that dialect for you.

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Configure

XIAOMI_API_KEY=...
Or in config.yaml: 
providers:
  xiaomi:
    type: xiaomi
    base_url: "https://api.xiaomimimo.com/v1"
    api_key: "${XIAOMI_API_KEY}"

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Thinking mode

MiMo models think by default, which increases token usage. Disable it per request with MiMo’s thinking parameter — GoModel forwards it unchanged: 
{"model": "xiaomi/mimo-v2.5-pro", "thinking": {"type": "disabled"}, ...}
In multi-turn tool-calling conversations, replay the assistant’s reasoning_content field in the message history exactly as you received it. GoModel preserves it in both directions.

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1M context

Append [1m] to a model ID (for example mimo-v2.5-pro[1m]) to enable 1M-token context. These variants are usually not returned by MiMo’s /models listing, so add them to the configured model list to make them routable: 
XIAOMI_MODELS=mimo-v2.5-pro,mimo-v2.5-pro[1m]

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Text-to-speech and transcription

MiMo has no native /audio/* endpoints — TTS (mimo-v2.5-tts, mimo-v2.5-tts-voicedesign, mimo-v2.5-tts-voiceclone) and ASR (mimo-v2.5-asr) run through chat completions. GoModel exposes both ways:
  • Standard audio endpoints — /v1/audio/speech and /v1/audio/transcriptions are translated automatically. Speech supports response_format wav (default) and pcm; instructions become the MiMo style prompt and voice selects a preset voice. Transcription supports json (default) and text response formats, with language passed through to MiMo’s asr_options and temperature forwarded to the chat request.
  • MiMo’s chat dialect — send chat completions directly: synthesis text in an assistant message with a top-level audio: {format, voice} parameter, or an input_audio content part whose data is a base64 data: URI for transcription. GoModel forwards these shapes untouched.

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Not supported by Xiaomi MiMo

All of these return invalid_request_error rather than silently dropping the option:
  • Embeddings.
  • Speech response_format values other than wav/pcm and non-default speed (use instructions to adjust pace).
  • Transcription verbose_json/srt/vtt formats, prompt, and timestamp_granularities (MiMo returns plain transcript text only).
MiMo-V2-Flash and V2-TTS requests auto-route to the V2.5 models (at V2.5 pricing) from June 18, 2026.