OpenClaw ships a bundled xai provider plugin for Grok models. For most users, the recommended path is Grok OAuth with an eligible SuperGrok or X Premium subscription. OpenClaw stays local-first: the Gateway, config, routing, and tools run on your machine, while Grok model requests authenticate through xAI and are sent to xAI's API.

OAuth does not require an xAI API key, and it does not require the Grok Build app. xAI may still show Grok Build on the consent screen because OpenClaw uses xAI's shared OAuth client.

Choose your setup path

Use the path that matches your OpenClaw install state:

New OpenClaw install

Run onboarding with daemon install when you are setting up a new local
Gateway, then choose the xAI/Grok OAuth option in the model/auth step:

```bash
openclaw onboard --install-daemon
```

On a VPS or over SSH, use device-code during onboarding:

```bash
openclaw onboard --install-daemon --auth-choice xai-device-code
```

OAuth does not require an xAI API key. OpenClaw does not require the Grok
Build app. xAI may still label the consent app as Grok Build because
OpenClaw uses xAI's shared OAuth client.

Existing OpenClaw install

If OpenClaw is already configured, sign in to xAI only. Do not rerun full
onboarding or reinstall the daemon just to connect Grok:

```bash
openclaw models auth login --provider xai --method oauth
```

Use the device-code flow instead when the Gateway runs over SSH, Docker, or
a VPS and a localhost browser callback is awkward:

```bash
openclaw models auth login --provider xai --device-code
```

To make Grok the default model after signing in, apply it separately:

```bash
openclaw models set xai/grok-4.3
```

Rerun full onboarding only if you intentionally want to change Gateway,
daemon, channel, workspace, or other setup choices.

API-key path

API-key setup still works for xAI Console keys and for media surfaces that
require key-backed provider config:

```bash
openclaw models auth login --provider xai --method api-key
export XAI_API_KEY=xai-...
```

Pick a model

```json5
{
  agents: { defaults: { model: { primary: "xai/grok-4.3" } } },
}
```

Note

OpenClaw uses the xAI Responses API as the bundled xAI transport. The same credential from openclaw models auth login --provider xai --method oauth, openclaw models auth login --provider xai --device-code, or openclaw models auth login --provider xai --method api-key can also power first-class web_search, x_search, remote code_execution, and xAI image/video generation. Speech and transcription currently require XAI_API_KEY or provider config. Grok-backed web_search prefers xAI OAuth and falls back to XAI_API_KEY or plugin web-search config. If you store an xAI key under plugins.entries.xai.config.webSearch.apiKey, the bundled xAI model provider reuses that key as a fallback too. Set plugins.entries.xai.config.webSearch.baseUrl to route Grok web_search and, by default, x_search through an operator xAI Responses proxy. code_execution tuning lives under plugins.entries.xai.config.codeExecution.

OAuth troubleshooting

• If browser OAuth cannot reach 127.0.0.1:56121, use openclaw models auth login --provider xai --device-code.

• If sign-in succeeds but Grok is not the default model, run openclaw models set xai/grok-4.3.

• To inspect saved xAI auth profiles, run:

  openclaw models auth list --provider xai
  openclaw models status

• xAI decides which accounts can receive OAuth API tokens. If an account is not eligible, try the API-key path or check the subscription on xAI's side.

Tip

Use xai-device-code when signing in from SSH, Docker, or a VPS. OpenClaw prints an xAI URL and short code; finish sign-in in any local browser while the remote process polls xAI for the completed token exchange.

Built-in catalog

OpenClaw includes the current xAI chat models out of the box, ordered newest first in model pickers:

Family	Model ids
Grok Build 0.1	grok-build-0.1
Grok 4.3	grok-4.3
Grok 4.20 Beta	grok-4.20-beta-latest-reasoning, grok-4.20-beta-latest-non-reasoning

The plugin still forward-resolves older Grok 3, Grok 4, Grok 4 Fast, Grok 4.1 Fast, and Grok Code slugs for existing configs. Official Grok Code Fast aliases normalize to grok-build-0.1; OpenClaw no longer shows the other retired upstream slugs in the selectable catalog.

Tip

Use grok-4.3 for general chat and grok-build-0.1 for build/coding-focused workloads unless you explicitly need a Grok 4.20 beta alias.

OpenClaw feature coverage

The bundled plugin maps xAI's current public API surface onto OpenClaw's shared provider and tool contracts. Capabilities that don't fit the shared contract (for example streaming TTS and realtime voice) are not exposed - see the table below.

xAI capability	OpenClaw surface	Status
Chat / Responses	xai/<model> model provider	Yes
Server-side web search	web_search provider grok	Yes
Server-side X search	x_search tool	Yes
Server-side code execution	code_execution tool	Yes
Images	image_generate	Yes
Videos	video_generate	Yes
Batch text-to-speech	messages.tts.provider: "xai" / tts	Yes
Streaming TTS	-	Not exposed; OpenClaw's TTS contract returns complete audio buffers
Batch speech-to-text	tools.media.audio / media understanding	Yes
Streaming speech-to-text	Voice Call streaming.provider: "xai"	Yes
Realtime voice	-	Not exposed yet; different session/WebSocket contract
Files / batches	Generic model API compatibility only	Not a first-class OpenClaw tool

Note

OpenClaw uses xAI's REST image/video/TTS/STT APIs for media generation, speech, and batch transcription, xAI's streaming STT WebSocket for live voice-call transcription, and the Responses API for model, search, and code-execution tools. Features that need different OpenClaw contracts, such as Realtime voice sessions, are documented here as upstream capabilities rather than hidden plugin behavior.

Fast-mode mappings

/fast on or agents.defaults.models["xai/<model>"].params.fastMode: true rewrites native xAI requests as follows:

Source model	Fast-mode target
grok-3	grok-3-fast
grok-3-mini	grok-3-mini-fast
grok-4	grok-4-fast
grok-4-0709	grok-4-fast

Legacy compatibility aliases

Legacy aliases still normalize to the canonical bundled ids:

Legacy alias	Canonical id
grok-code-fast-1	grok-build-0.1
grok-code-fast	grok-build-0.1
grok-code-fast-1-0825	grok-build-0.1
grok-4-fast-reasoning	grok-4-fast
grok-4-1-fast-reasoning	grok-4-1-fast
grok-4.20-reasoning	grok-4.20-beta-latest-reasoning
grok-4.20-non-reasoning	grok-4.20-beta-latest-non-reasoning

Features

Web search

The bundled `grok` web-search provider prefers xAI OAuth, then falls back
to `XAI_API_KEY` or a plugin web-search key:

```bash
openclaw models auth login --provider xai --method oauth
openclaw config set tools.web.search.provider grok
```

Video generation

The bundled `xai` plugin registers video generation through the shared
`video_generate` tool.

- Default video model: `xai/grok-imagine-video`
- Modes: text-to-video, image-to-video, reference-image generation, remote
  video edit, and remote video extension
- Aspect ratios: `1:1`, `16:9`, `9:16`, `4:3`, `3:4`, `3:2`, `2:3`
- Resolutions: `480P`, `720P`
- Duration: 1-15 seconds for generation/image-to-video, 1-10 seconds when
  using `reference_image` roles, 2-10 seconds for extension
- Reference-image generation: set `imageRoles` to `reference_image` for
  every supplied image; xAI accepts up to 7 such images
- Default operation timeout: 600 seconds unless `video_generate.timeoutMs`
  or `agents.defaults.videoGenerationModel.timeoutMs` is set

Warning

Local video buffers are not accepted. Use remote `http(s)` URLs for
video edit/extend inputs. Image-to-video accepts local image buffers because
OpenClaw can encode those as data URLs for xAI.

To use xAI as the default video provider:

```json5
{
  agents: {
    defaults: {
      videoGenerationModel: {
        primary: "xai/grok-imagine-video",
      },
    },
  },
}
```

Note

See [Video Generation](/en/tools/video-generation) for shared tool parameters,
provider selection, and failover behavior.

Image generation

The bundled `xai` plugin registers image generation through the shared
`image_generate` tool.

- Default image model: `xai/grok-imagine-image`
- Additional model: `xai/grok-imagine-image-quality`
- Modes: text-to-image and reference-image edit
- Reference inputs: one `image` or up to five `images`
- Aspect ratios: `1:1`, `16:9`, `9:16`, `4:3`, `3:4`, `2:3`, `3:2`
- Resolutions: `1K`, `2K`
- Count: up to 4 images
- Default operation timeout: 600 seconds unless `image_generate.timeoutMs`
  or `agents.defaults.imageGenerationModel.timeoutMs` is set

OpenClaw asks xAI for `b64_json` image responses so generated media can be
stored and delivered through the normal channel attachment path. Local
reference images are converted to data URLs; remote `http(s)` references are
passed through.

To use xAI as the default image provider:

```json5
{
  agents: {
    defaults: {
      imageGenerationModel: {
        primary: "xai/grok-imagine-image",
      },
    },
  },
}
```

Note

xAI also documents `quality`, `mask`, `user`, and additional native ratios
such as `1:2`, `2:1`, `9:20`, and `20:9`. OpenClaw forwards only the
shared cross-provider image controls today; unsupported native-only knobs
are intentionally not exposed through `image_generate`.

Text-to-speech

The bundled `xai` plugin registers text-to-speech through the shared `tts`
provider surface.

- Voices: `eve`, `ara`, `rex`, `sal`, `leo`, `una`
- Default voice: `eve`
- Formats: `mp3`, `wav`, `pcm`, `mulaw`, `alaw`
- Language: BCP-47 code or `auto`
- Speed: provider-native speed override
- Native Opus voice-note format is not supported

To use xAI as the default TTS provider:

```json5
{
  messages: {
    tts: {
      provider: "xai",
      providers: {
        xai: {
          speakerVoiceId: "eve",
        },
      },
    },
  },
}
```

Note

OpenClaw uses xAI's batch `/v1/tts` endpoint. xAI also offers streaming TTS
over WebSocket, but the OpenClaw speech provider contract currently expects
a complete audio buffer before reply delivery.

Speech-to-text

The bundled `xai` plugin registers batch speech-to-text through OpenClaw's
media-understanding transcription surface.

- Default model: `grok-stt`
- Endpoint: xAI REST `/v1/stt`
- Input path: multipart audio file upload
- Supported by OpenClaw wherever inbound audio transcription uses
  `tools.media.audio`, including Discord voice-channel segments and
  channel audio attachments

To force xAI for inbound audio transcription:

```json5
{
  tools: {
    media: {
      audio: {
        models: [
          {
            type: "provider",
            provider: "xai",
            model: "grok-stt",
          },
        ],
      },
    },
  },
}
```

Language can be supplied through the shared audio media config or per-call
transcription request. Prompt hints are accepted by the shared OpenClaw
surface, but the xAI REST STT integration only forwards file, model, and
language because those map cleanly to the current public xAI endpoint.

Streaming speech-to-text

The bundled `xai` plugin also registers a realtime transcription provider
for live voice-call audio.

- Endpoint: xAI WebSocket `wss://api.x.ai/v1/stt`
- Default encoding: `mulaw`
- Default sample rate: `8000`
- Default endpointing: `800ms`
- Interim transcripts: enabled by default

Voice Call's Twilio media stream sends G.711 µ-law audio frames, so the
xAI provider can forward those frames directly without transcoding:

```json5
{
  plugins: {
    entries: {
      "voice-call": {
        config: {
          streaming: {
            enabled: true,
            provider: "xai",
            providers: {
              xai: {
                apiKey: "${XAI_API_KEY}",
                endpointingMs: 800,
                language: "en",
              },
            },
          },
        },
      },
    },
  },
}
```

Provider-owned config lives under
`plugins.entries.voice-call.config.streaming.providers.xai`. Supported
keys are `apiKey`, `baseUrl`, `sampleRate`, `encoding` (`pcm`, `mulaw`, or
`alaw`), `interimResults`, `endpointingMs`, and `language`.

Note

This streaming provider is for Voice Call's realtime transcription path.
Discord voice currently records short segments and uses the batch
`tools.media.audio` transcription path instead.

x_search configuration

The bundled xAI plugin exposes `x_search` as an OpenClaw tool for searching
X (formerly Twitter) content via Grok.

Config path: `plugins.entries.xai.config.xSearch`

| Key                | Type    | Default            | Description                          |
| ------------------ | ------- | ------------------ | ------------------------------------ |
| `enabled`          | boolean | -                  | Enable or disable x_search           |
| `model`            | string  | `grok-4-1-fast`    | Model used for x_search requests     |
| `baseUrl`          | string  | -                  | xAI Responses base URL override      |
| `inlineCitations`  | boolean | -                  | Include inline citations in results  |
| `maxTurns`         | number  | -                  | Maximum conversation turns           |
| `timeoutSeconds`   | number  | -                  | Request timeout in seconds           |
| `cacheTtlMinutes`  | number  | -                  | Cache time-to-live in minutes        |

```json5
{
  plugins: {
    entries: {
      xai: {
        config: {
          xSearch: {
            enabled: true,
            model: "grok-4-1-fast",
            baseUrl: "https://api.x.ai/v1",
            inlineCitations: true,
          },
        },
      },
    },
  },
}
```

Code execution configuration

The bundled xAI plugin exposes `code_execution` as an OpenClaw tool for
remote code execution in xAI's sandbox environment.

Config path: `plugins.entries.xai.config.codeExecution`

| Key               | Type    | Default            | Description                              |
| ----------------- | ------- | ------------------ | ---------------------------------------- |
| `enabled`         | boolean | `true` (if key available) | Enable or disable code execution  |
| `model`           | string  | `grok-4-1-fast`    | Model used for code execution requests   |
| `maxTurns`        | number  | -                  | Maximum conversation turns               |
| `timeoutSeconds`  | number  | -                  | Request timeout in seconds               |

Note

This is remote xAI sandbox execution, not local [`exec`](/en/tools/exec).

```json5
{
  plugins: {
    entries: {
      xai: {
        config: {
          codeExecution: {
            enabled: true,
            model: "grok-4-1-fast",
          },
        },
      },
    },
  },
}
```

Known limits

- xAI auth can use an API key, environment variable, plugin config fallback,
  browser OAuth, or device-code OAuth with an eligible xAI account. Browser
  OAuth uses a local callback on `127.0.0.1:56121`; for remote hosts, use
  `xai-device-code` unless you want to forward that port before opening the
  sign-in URL. xAI decides which accounts can receive OAuth API tokens, and
  the consent page may show Grok Build even though OpenClaw does not require
  the Grok Build app.
- `grok-4.20-multi-agent-experimental-beta-0304` is not supported on the
  normal xAI provider path because it requires a different upstream API
  surface than the standard OpenClaw xAI transport.
- xAI Realtime voice is not registered as an OpenClaw provider yet. It
  needs a different bidirectional voice session contract than batch STT or
  streaming transcription.
- xAI image `quality`, image `mask`, and extra native-only aspect ratios are
  not exposed until the shared `image_generate` tool has corresponding
  cross-provider controls.

Advanced notes

- OpenClaw applies xAI-specific tool-schema and tool-call compatibility fixes
  automatically on the shared runner path.
- Native xAI requests default `tool_stream: true`. Set
  `agents.defaults.models["xai/<model>"].params.tool_stream` to `false` to
  disable it.
- The bundled xAI wrapper strips unsupported strict tool-schema flags and
  reasoning payload keys before sending native xAI requests.
- `web_search`, `x_search`, and `code_execution` are exposed as OpenClaw
  tools. OpenClaw enables the specific xAI built-in it needs inside each tool
  request instead of attaching all native tools to every chat turn.
- Grok `web_search` reads `plugins.entries.xai.config.webSearch.baseUrl`.
  `x_search` reads `plugins.entries.xai.config.xSearch.baseUrl`, then
  falls back to the Grok web-search base URL.
- `x_search` and `code_execution` are owned by the bundled xAI plugin rather
  than hardcoded into the core model runtime.
- `code_execution` is remote xAI sandbox execution, not local
  [`exec`](/en/tools/exec).

Live testing

The xAI media paths are covered by unit tests and opt-in live suites. Export XAI_API_KEY in the process environment before running live probes.

pnpm test extensions/xai
OPENCLAW_LIVE_TEST=1 OPENCLAW_LIVE_TEST_QUIET=1 pnpm test:live -- extensions/xai/xai.live.test.ts
OPENCLAW_LIVE_TEST=1 OPENCLAW_LIVE_TEST_QUIET=1 OPENCLAW_LIVE_IMAGE_GENERATION_PROVIDERS=xai pnpm test:live -- test/image-generation.runtime.live.test.ts

The provider-specific live file synthesizes normal TTS, telephony-friendly PCM TTS, transcribes audio through xAI batch STT, streams the same PCM through xAI realtime STT, generates text-to-image output, and edits a reference image. The shared image live file verifies the same xAI provider through OpenClaw's runtime selection, fallback, normalization, and media attachment path.

Related

• Model selection — Choosing providers, model refs, and failover behavior.
• Video generation — Shared video tool parameters and provider selection.
• All providers — The broader provider overview.
• Troubleshooting — Common issues and fixes.