Messages API responses now report how many billed output tokens were extended thinking.

Billed thinking is now a separate usage detail, so builders can inspect reasoning spend directly.

For streaming builds, the breakdown arrives on the final message_delta event and works without a beta header.

• Jul 10, 2026OpenAI is deprecating Atlas as browser-based agentic capabilities move into ChatGPT and Codex.
• Jul 10, 2026Google removed Gemini Developer API pricing content from the monitored pricing page.
• Jul 09, 2026OpenAI model card page removed its captured API docs navigation content

This is the world we build in. It moves this fast. We move with it.