Using Voxtral Small Transcribe 3 on Vercel AI Gateway

Implementation guide · Voxtral · MistralAI

Serverless

Vercel AI Gateway exposes Voxtral Small Transcribe 3 through model ID mistral/voxtral-small-transcribe-3. Use the setup steps, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-10-20. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at Vercel AI Gateway and generate an API key.
  2. 2
    Use the Vercel AI Gateway SDK or REST API to call mistral/voxtral-small-transcribe-3 — see the documentation for request format.

Code Examples

Install
pip install openai
API key
AI_GATEWAY_API_KEY
Model ID
mistral/voxtral-small-transcribe-3

creator/model-name e.g. kwaipilot/kat-coder-pro-v2

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["AI_GATEWAY_API_KEY"],
    base_url="https://ai-gateway.vercel.sh/v1"
)
response = client.chat.completions.create(
    model="mistral/voxtral-small-transcribe-3",
    messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)

Capabilities

MultimodalJSON / Tool useAudio

About Voxtral Small Transcribe 3

Voxtral Small Transcribe 3 is Mistral AI's flagship speech-to-text model in the Voxtral 3 family, released October 20, 2026 as a Public Preview on the Mistral API. It transcribes more than 50 languages, including the 24 official EU languages, with speaker diarization, end-of-turn detection and context biasing, and also supports translation, spoken Q&A, summarization and function calling over audio. Mistral reports state-of-the-art FLEURS and diarization results against Whisper large-v3, Scribe v2, GPT Transcribe and Gemini 3.5 Transcribe. It has a 32k context and costs $0.004 per audio minute; weights are not published.

Model Specs

Released2026-10-20
Context32K

Provider

Vercel AI Gateway

Vercel