Speech Recognition (MiMo‑V2.5-ASR) - OpenAI API Compatibility

Request Address

https://api.xiaomimimo.com/v1/chat/completions

Request Headers

The API supports the following two authentication methods. Please choose one and add it to the request headers:

Method 1: api-key field authentication, format:

api-key: $MIMO_API_KEY
Content-Type: application/json

Method 2: Authorization: Bearer authentication, format:

Authorization: Bearer $MIMO_API_KEY
Content-Type: application/json

Request body

Chat response object (non-streaming output)

Chat response chunk object (streaming output)

curl --location --request POST 'https://api.xiaomimimo.com/v1/chat/completions' \
--header "api-key: $MIMO_API_KEY" \
--header 'Content-Type: application/json' \
--data-raw '{
    "model": "mimo-v2.5-asr",
    "messages": [
        {
            "role": "user",
            "content": [
                {
                    "type": "input_audio",
                    "input_audio": {
                        "data": "data:{MIME_TYPE};base64,$BASE64_AUDIO"
                    }
                }
            ]
        }
    ],
    "asr_options": {
        "language": "auto"
    }
}'

response

{
    "id": "9f51eba459dd4dfdabb31cabba0cb7dc",
    "choices": [
        {
            "finish_reason": "stop",
            "index": 0,
            "message": {
                "content": "Good morning. Could you tell me what the weather will be like today?",
                "role": "assistant",
                "audio": null,
                "tool_calls": null,
                "audio_tokens": []
            }
        }
    ],
    "created": 1780398283,
    "model": "mimo-v2.5-asr",
    "object": "chat.completion",
    "usage": {
        "completion_tokens": 20,
        "prompt_tokens": 46,
        "total_tokens": 66,
        "completion_tokens_details": {
            "reasoning_tokens": 0
        },
        "prompt_tokens_details": {
            "audio_tokens": 25,
            "cached_tokens": 45
        },
        "seconds": 4
    }
}

Update Time June 02, 2026

curl --location --request POST 'https://api.xiaomimimo.com/v1/chat/completions' \
--header "api-key: $MIMO_API_KEY" \
--header 'Content-Type: application/json' \
--data-raw '{
    "model": "mimo-v2.5-asr",
    "messages": [
        {
            "role": "user",
            "content": [
                {
                    "type": "input_audio",
                    "input_audio": {
                        "data": "data:{MIME_TYPE};base64,$BASE64_AUDIO"
                    }
                }
            ]
        }
    ],
    "asr_options": {
        "language": "auto"
    }
}'

response

{
    "id": "9f51eba459dd4dfdabb31cabba0cb7dc",
    "choices": [
        {
            "finish_reason": "stop",
            "index": 0,
            "message": {
                "content": "Good morning. Could you tell me what the weather will be like today?",
                "role": "assistant",
                "audio": null,
                "tool_calls": null,
                "audio_tokens": []
            }
        }
    ],
    "created": 1780398283,
    "model": "mimo-v2.5-asr",
    "object": "chat.completion",
    "usage": {
        "completion_tokens": 20,
        "prompt_tokens": 46,
        "total_tokens": 66,
        "completion_tokens_details": {
            "reasoning_tokens": 0
        },
        "prompt_tokens_details": {
            "audio_tokens": 25,
            "cached_tokens": 45
        },
        "seconds": 4
    }
}