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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.

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Claude Code v2.1.199 2 Jul 2026

Model Catalog: max_output_tokens Limits and advisor_rank

Models in the internal catalog now carry explicit output token limits and an advisor ranking.

Details

max_output_tokens.default and max_output_tokens.upper are now populated for each model (e.g., Haiku 3.5: 8192/8192; Haiku 4.5: 32000/64000)
advisor_rank field added to models eligible for the advisor tool; models without an advisor rank emit a clearer error message pointing to CLAUDE_CODE_ENABLE_EXPERIMENTAL_ADVISOR_TOOL=1

Evidence

(search for "max_output_tokens", "advisor_rank", "has no advisor rank in the model catalog")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.199 →