API documentation changelog

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Unreleased

• Added public API support, data-handling, and SDK/protocol compatibility pages.
• Added a dated comparison with Google’s Standard image-output prices and linked the live model marketplace.
• Added HTTP 413, task-retention, API-quota-return, and model-notice boundaries.
• Changed every billable Playground to the lowest valid output tier and added a billable-operation warning to its OpenAPI description.
• Added repository-owned llms.txt, llms-full.txt, skill.md, and a multilingual sitemap so discovery files cannot retain an older API contract.
• Added the upstream retirement warning and migration path for gemini-2.5-flash-image.
• Expanded every model Parameters page with its current YingTu size and aspect ratio values.
• Replaced incomplete asynchronous and editing snippets with self-contained model examples.
• Added bounded polling with a deadline, Retry-After, jitter, and explicit completed or failed handling.
• Added HTTP 403 and mutually exclusive response Part branches to the public OpenAPI contract.
• Centralized exact price numbers in the Pricing page and linked model pages to that dated source.
• Clarified the difference between the generic API Reference and model-fixed online testing forms.
• Improved Simplified Chinese language metadata and localized page copy.

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September 2, 2026

• Launched https://docs.yingtu.ai with English and Simplified Chinese navigation.
• Published the three Gemini-native operations used by the current image flow.
• Added independent Overview, Parameters, and Examples pages for the four current Nano Banana model IDs.
• Added synchronous, asynchronous, task retrieval, pricing, billing, and error guidance.