xAI Docs

xAI Docs Release Notes – June 2026

Files API

• New page: Public URLs (/developers/files/public-urls) — create revocable, shareable public URLs for stored files with optional auto-expiry (1 hour–30 days). Includes quick start, idempotency, expiry behavior, and limitations.
• Added support for filtering files by public URL presence.

Imagine & Media Generation

• New section: Files API Integration (/developers/model-capabilities/imagine/files) with dedicated sub-pages:
  • Inputs — reference stored files via file_id (images, videos, reference images) across image/video generation and editing endpoints. Supports mixing file_id, URL, and base64 in the same request.
  • Outputs — persist generated images/videos to Files using storage_options; optionally publish a public URL in one call. Covers multi-output handling and error behavior.
• Updated pages now document file_id support:
  • Video: editing, extension, reference-to-video, image-to-video
  • Images: multi-image editing
• Reorganized Imagine page structure and added cross-links to the new Files integration docs.

Audio (TTS & Custom Voices)

• Clarified custom voice creation examples and added error handling guidance.
• Improved TTS documentation for custom voices, including clearer voice_id usage and a new 404 error case for unknown voices.

Release Notes

• Added June section documenting Public URLs and the Files API ↔ Imagine integration.

No pages were removed. All changes expand developer guidance for the new Files + Imagine capabilities.