Providers

Mistral

The official external mistral plugin registers four contracts: chat completions, media understanding (Voxtral batch transcription), realtime STT for Voice Call (Voxtral Realtime), and memory embeddings (mistral-embed).

Property	Value
Provider id	`mistral`
Plugin	`@openclaw/mistral-provider`
Auth env var	`MISTRAL_API_KEY`
Onboarding flag	`--auth-choice mistral-api-key`
Direct CLI flag	`--mistral-api-key <key>`
API	OpenAI-compatible (`openai-completions`)
Base URL	`https://api.mistral.ai/v1`
Default model	`mistral/mistral-large-latest`
Embedding model	`mistral-embed`
Voxtral batch	`voxtral-mini-latest` (audio transcription)
Voxtral realtime	`voxtral-mini-transcribe-realtime-2602`

Getting started

Install the plugin

bash

openclaw plugins install @openclaw/mistral-provider

Installation applies to a running Gateway automatically; otherwise it takes effect on the next startup. See Apply changes and inspect.

Get your API key

Create an API key in the Mistral Console.

Run onboarding

bash

openclaw onboard --auth-choice mistral-api-key

Or pass the key directly:

bash

openclaw onboard --mistral-api-key "$MISTRAL_API_KEY"

Set a default model

json5

{  env: { vars: { MISTRAL_API_KEY: "sk-..." } },  agents: { defaults: { model: { primary: "mistral/mistral-large-latest" } } },}

Verify the model is available

bash

openclaw models list --provider mistral

Built-in LLM catalog

Model ref	Input	Context	Max output	Notes
`mistral/mistral-large-latest`	text, image	262,144	16,384	Default model
`mistral/mistral-medium-3-5`	text, image	262,144	8,192	Mistral Medium 3.5; adjustable reasoning
`mistral/mistral-small-latest`	text, image	262,144	16,384	Mistral Small 4 latest; adjustable `reasoning_effort`
`mistral/mistral-small-2603`	text, image	262,144	16,384	Mistral Small 4 pinned; adjustable `reasoning_effort`
`mistral/codestral-latest`	text	128,000	4,096	Coding
`mistral/mistral-medium-2508`	text, image	128,000	8,192	Deprecated; hidden; use Mistral Medium 3.5
`mistral/devstral-medium-latest`	text	262,144	32,768	Deprecated; hidden; use Mistral Medium 3.5

Browse the plugin catalog row before changing config:

bash

openclaw models list --all --provider mistral --plain

Smoke-test a model without starting the Gateway:

bash

openclaw infer model run --local \  --model mistral/mistral-medium-3-5 \  --prompt "Reply with exactly: mistral-ok" \  --json

Audio transcription (Voxtral)

Use Voxtral for batch audio transcription through the media understanding pipeline:

json5

{  tools: {    media: {      models: [{ provider: "mistral", model: "voxtral-mini-latest", capabilities: ["audio"] }],      audio: {        enabled: true,      },    },  },}

Voice Call streaming STT

The mistral plugin registers Voxtral Realtime as a Voice Call streaming STT provider.

Setting	Config path	Default
API key	`plugins.entries.voice-call.config.streaming.providers.mistral.apiKey`	Falls back to `MISTRAL_API_KEY`
Model	`...mistral.model`	`voxtral-mini-transcribe-realtime-2602`
Encoding	`...mistral.encoding`	`pcm_mulaw`
Sample rate	`...mistral.sampleRate`	`8000`
Target delay	`...mistral.targetStreamingDelayMs`	`800`

json5

{  plugins: {    entries: {      "voice-call": {        config: {          streaming: {            enabled: true,            provider: "mistral",            providers: {              mistral: {                apiKey: "${MISTRAL_API_KEY}",                targetStreamingDelayMs: 800,              },            },          },        },      },    },  },}

Advanced configuration

Adjustable reasoning

mistral/mistral-small-latest, mistral/mistral-small-2603, and mistral/mistral-medium-3-5 support adjustable reasoning on the Chat Completions API via reasoning_effort (none minimizes extra thinking in the output; high surfaces full thinking traces before the final answer).

Thinking defaults to off. OpenClaw accepts these session thinking levels and maps them to Mistral's API:

OpenClaw thinking level	Mistral `reasoning_effort`
off / minimal	`none`
low / medium / high / xhigh / adaptive / max	`high`

Example model-scoped config for Medium 3.5 reasoning:

json5

{  agents: {    defaults: {      model: { primary: "mistral/mistral-medium-3-5" },      models: {        "mistral/mistral-medium-3-5": {          params: { thinking: "high" },        },      },    },  },}

Memory embeddings

Mistral can serve memory embeddings via /v1/embeddings (default model: mistral-embed):

json5

{  memory: {    search: { provider: "mistral" },  },}

Auth and base URL

Mistral auth uses MISTRAL_API_KEY (Bearer header).
Provider base URL defaults to https://api.mistral.ai/v1 and accepts the standard OpenAI-compatible chat-completions request shape.
Onboarding default model is mistral/mistral-large-latest.
Override the base URL under models.providers.mistral.baseUrl only when Mistral explicitly publishes a regional endpoint you need.

Model selection

Choosing providers, model refs, and failover behavior.

Media understanding

Audio transcription setup and provider selection.

Was this useful?