Source Intelligence
Sweep 28 Aug 2026 ยท 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.250 Feeds RSS JSON llms.txt

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.

Reference

Models, all 19.

Model identifiers the client knows about, including the aliases it resolves.

/
19 models

not in v2.1.243, Anthropic has never documented it.

Every model in the build

claude-3-5-haikuNo description from anybody. never mined claude-3-5-sonnetNo description from anybody. never mined claude-3-7-sonnetNo description from anybody. never mined claude-3-opusNo description from anybody. never mined claude-fable-5The model picker now colours Fable 5, Mythos 5 and Sonnet 5 in its list. never mined claude-haiku-4-5No description from anybody. never mined claude-haiku-4-5-20251001No description from anybody. never mined claude-mythos-5The model picker now colours Fable 5, Mythos 5 and Sonnet 5 in its list. never mined claude-mythos-previewMore models now report a concrete deprecation date, including one named claude-mythos-preview. never mined claude-opus-4-5No description from anybody. never mined claude-opus-4-6No description from anybody. never mined claude-opus-4-7Model tables now list claude-opus-4-7, claude-opus-4-8 and claude-opus-5. never mined claude-opus-4-8Model tables now list claude-opus-4-7, claude-opus-4-8 and claude-opus-5. never mined claude-opus-5Opus 5 is now the default Opus, with a 1M-context option in the model picker. never mined claude-sonnet-4-0No description from anybody. never mined claude-sonnet-4-5No description from anybody. never mined claude-sonnet-4-5-20250929No description from anybody. never mined claude-sonnet-4-6No description from anybody. never mined claude-sonnet-5Sonnet 5's default context window is now a full million tokens, up from 967,000. never mined

Nothing matches that.