# xAI (Grok API)

xAI's Grok API permits commercial use; API prompts are not used for training by default; Grok Heavy / Premium consumer tiers on X differ in data handling.

- slug: `xai`
- type: API / developer platform
- status: active
- official site: https://x.ai
- official docs: https://docs.x.ai

## Rights

| Key | Value | Condition | Source | Checked |
|---|---|---|---|---|
| commercial_use_allowed | yes |  | https://x.ai/legal/terms-of-service | 2026-04-18 |
| output_ownership | yes |  | https://x.ai/legal/terms-of-service | 2026-04-18 |
| training_use_of_input | no | API tier only. Consumer Grok on X is governed separately. | https://x.ai/legal/terms-of-service | 2026-04-18 |

## Constraints

| Key | Value | Condition | Source | Checked |
|---|---|---|---|---|
| api_available | yes |  | https://docs.x.ai | 2026-04-18 |

## Primary sources

- [xAI API Documentation](https://docs.x.ai) — official_docs (primary), Checked: 2026-04-18
- [xAI Terms of Service](https://x.ai/legal/terms-of-service) — official_terms (primary), Checked: 2026-04-18

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