> ## Documentation Index
> Fetch the complete documentation index at: https://docs.infery.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# xAI

> Grok text, image, audio and video models.

xAI's Grok models available through Infery.

## Text models

| Model                   | Slug                      | Context | Max output | Stream | Tools | JSON | Vision | Files                      |
| ----------------------- | ------------------------- | ------- | ---------- | ------ | ----- | ---- | ------ | -------------------------- |
| Grok 4-1 Fast           | `grok-4-1-fast`           | 2M      | 32K        | ✓      | ✓     | ✓    | —      | images (jpeg/png/gif/webp) |
| Grok 4-1 Fast Reasoning | `grok-4-1-fast-reasoning` | 2M      | 32K        | ✓      | ✓     | ✓    | —      | images                     |
| Grok 4.20               | `grok-4.20`               | 2M      | 32K        | ✓      | ✓     | ✓    | —      | images                     |
| Grok 4.20 Multi-Agent   | `grok-4.20-multi-agent`   | 2M      | 32K        | ✓      | ✓     | ✓    | —      | images                     |
| Grok 4.20 Reasoning     | `grok-4.20-reasoning`     | 2M      | 32K        | ✓      | ✓     | ✓    | —      | images                     |

## Image models

| Model                  | Slug                     | Sizes  | Max N | Aspect ratios                                                                   | Edits              |
| ---------------------- | ------------------------ | ------ | ----- | ------------------------------------------------------------------------------- | ------------------ |
| Grok Imagine Image     | `grok-imagine-image`     | 1K, 2K | 4     | 1:1, 16:9, 9:16, 3:2, 2:3, 4:3, 3:4, 2:1, 1:2, 19.5:9, 9:19.5, 20:9, 9:20, auto | ✓ (up to 5 images) |
| Grok Imagine Image Pro | `grok-imagine-image-pro` | 1K, 2K | 4     | 1:1, 16:9, 9:16, 3:2, 2:3, 4:3, 3:4, 2:1, 1:2, 19.5:9, 9:19.5, 20:9, 9:20, auto | ✓ (up to 5 images) |

## Audio models

### Text-to-speech

| Model    | Slug       | Output formats             |
| -------- | ---------- | -------------------------- |
| Grok TTS | `grok-tts` | mp3, wav, pcm, mulaw, alaw |

## Video models

| Model              | Slug                 | Durations | Resolutions | Aspect ratios                       |
| ------------------ | -------------------- | --------- | ----------- | ----------------------------------- |
| Grok Imagine Video | `grok-imagine-video` | 1–15s     | 480p, 720p  | 16:9, 9:16, 1:1, 4:3, 3:4, 3:2, 2:3 |