mimo-v2.5-tts-voicedesign (Text-Designed Voice Speech Synthesis)

Actual API Endpoint: POST https://api.tokenhot.ai/v1/chat/completions

Model Code: mimo-v2.5-tts-voicedesign

Design a custom voice through text description for speech synthesis. No audio file is required — simply describe the voice characteristics in the user message to generate customized speech.

The role: user message is a required parameter containing the voice design description (voice design prompt). The more specific and vivid the description, the closer the generated voice will match your expectations.

The role: assistant message contains the text to synthesize.

The optimize_text_preview parameter controls whether the broadcast text is intelligently polished; when set to true, the assistant message can be omitted.

Singing mode, preset voices, and voice cloning are not supported.

The low-latency streaming feature is not yet available; the streaming interface falls back to compatibility mode (returns all at once after inference completes).

Key Voice Description Dimensions (not all are required):

Dimension	Examples
Gender & Age	young woman in her mid-20s, middle-aged man in his 50s
Timbre / Texture	deep and gravelly, smooth and rich with a magnetic quality
Emotion / Tone	warm and confident, gentle but with a hint of fatigue
Speed / Rhythm	slow and deliberate, extremely fast like a machine gun
Character / Persona	narrator, podcast host, storyteller, late-night radio DJ
Scene Description	narrating a nature documentary, pitching to investors

Bearer Token

Provide your bearer token in the

Authorization

header when making requests to protected resources.

Example:

Authorization: Bearer ********************

curl --location 'https://api.tokenhot.ai/v1/chat/completions' \ --header 'Authorization: Bearer <token>' \ --header 'Content-Type: application/json' \ --data '{ "model": "mimo-v2.5-tts-voicedesign", "messages": [ { "role": "user", "content": "Give me a young male tone." }, { "role": "assistant", "content": "Yes, I had a sandwich." } ], "audio": { "format": "wav", "optimize_text_preview": true } }'

{ "id": "chatcmpl-abc123def456", "object": "chat.completion", "created": 1774324467, "model": "mimo-v2.5-tts-voicedesign", "choices": [ { "index": 0, "message": { "role": "assistant", "audio": { "id": "3864a4690d8a4aaea5f6acf4853a0600", "data": "UklGR...(Base64-encoded audio data)", "expires_at": null, "transcript": null } }, "finish_reason": "stop" } ] }

mimo-v2.5-tts-voicedesign (Text-Designed Voice Speech Synthesis)

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