Source Intelligence
Follow Discord

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 v1.0.0 Home All releases ←olderv0.2.126 v1.0.1newer→
Claude Code v1.0.0

New Models

Claude Opus 4

  • NEW: Introduced Claude Opus 4 model for complex tasks
  • Available across all providers:
  • First-party API: claude-opus-4-20250514
  • AWS Bedrock: us.anthropic.claude-opus-4-20250514-v1:0
  • Google Vertex: claude-opus-4@20250514
  • Pricing: $15/$75 per million tokens
  • Access Opus using /model opus command

Claude Sonnet 4

  • NEW: Introduced Claude Sonnet 4 as the new default model for daily use
  • Available across all providers:
  • First-party API: claude-sonnet-4-20250514
  • AWS Bedrock: us.anthropic.claude-sonnet-4-20250514-v1:0
  • Google Vertex: claude-sonnet-4@20250514
  • Claude Sonnet 3.7 remains available for AWS Bedrock users

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v1.0.0 →