Category
agents
Claude Sonnet 4.5
Anthropic's coding- and agent-focused flagship in the Claude 4 family.
Sep 29, 2025200K ctxClaude Opus 4
Claude Opus 4 is Anthropic's top-tier model from the Claude 4 generation, released in May 2025 alongside Sonnet 4. It is built for long, autonomous coding and agent work, and can think at length while using tools.
May 22, 2025200K ctx