Anthropic launched cache diagnostics in public beta for Messages requests using diagnostics.previous_message_id.

Builders can see where a prompt cache prefix diverged instead of treating cache misses as opaque.

It sits inside Messages requests: pass diagnostics.previous_message_id and the beta header to get cache_miss_reason.

• 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.