DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
What changed: Added internal filtering for experimental features Previous behavior: All experimental features handled uniformly New behavior: Special handling for "interleaved-thinking-2025-05-14" and "context-1m-2025-08-07" features Impact: Prepares for controlled rollout of beta features (not yet user-accessible)
