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Documentation 2026-06-17 15:58 UTC to 2026-06-18 00:57 UTC

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rate-limits.md +1 −1

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38| grok-4.20-0309-non-reasoning | T0: 1.8K, T1: 2.4K, T2: 3.6K, T3: 6K, T4: 10K | T0: 10M, T1: 15M, T2: 25M, T3: 45M, T4: 85M |38| grok-4.20-0309-non-reasoning | T0: 1.8K, T1: 2.4K, T2: 3.6K, T3: 6K, T4: 10K | T0: 10M, T1: 15M, T2: 25M, T3: 45M, T4: 85M |

39| grok-build-0.1 | T0: 1.8K, T1: 2.4K, T2: 3.6K, T3: 6K, T4: 10K | T0: 10M, T1: 15M, T2: 25M, T3: 45M, T4: 85M |39| grok-build-0.1 | T0: 1.8K, T1: 2.4K, T2: 3.6K, T3: 6K, T4: 10K | T0: 10M, T1: 15M, T2: 25M, T3: 45M, T4: 85M |

40| grok-4.20-multi-agent-0309 | T0: 450, T1: 600, T2: 900, T3: 1.5K, T4: 2.7K | T0: 2.5M, T1: 3.7M, T2: 6.2M, T3: 11M, T4: 21M |40| grok-4.20-multi-agent-0309 | T0: 450, T1: 600, T2: 900, T3: 1.5K, T4: 2.7K | T0: 2.5M, T1: 3.7M, T2: 6.2M, T3: 11M, T4: 21M |

41| grok-imagine-image-quality | 300 | 0 |

42| grok-imagine-image | 300 | 0 |41| grok-imagine-image | 300 | 0 |

42| grok-imagine-image-quality | 300 | 0 |

43| grok-imagine-video | 70 | 0 |43| grok-imagine-video | 70 | 0 |

44| grok-imagine-video-1.5 | 60 | 0 |44| grok-imagine-video-1.5 | 60 | 0 |

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407}407}

408```408```

409 409 

410The root of a `parameters` schema must be an object (`"type": "object"`); nest any other types inside `properties`.

411 

412> [!WARNING]

413>

414> A tool whose `parameters` root is not an object (for example, a scalar or array) cannot be compiled into a tool-call grammar and is rejected with a `400` error that names the tool.

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410## Complete Vercel AI SDK Example416## Complete Vercel AI SDK Example

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412The Vercel AI SDK handles tool definition, execution, and the request/response loop automatically:418The Vercel AI SDK handles tool definition, execution, and the request/response loop automatically: