Source Intelligence

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.

All of v2.0.24 Home All releases olderv2.0.23 v2.0.25newer
Claude Code v2.0.24

Experimental Model Defaults for Pro Plan

Pro plan users may be assigned to experiments that change default model selection:

  • Haiku default: Some Pro users may see Haiku 4.5 as default instead of Sonnet 4.5 (cost optimization)
  • Sonnet 1M default: Users with 1M context access may default to Sonnet 4.5 [1M] instead of [200K]

These are A/B tests controlled by feature flags and not visible to all users.

Evidence

New functions r_1() at line 144169 and QH0() at line 144180 in pretty-v2.0.24.js

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

See this entry in the whole of v2.0.24 →