Anthropic Models

The final model of the Claude 5.5 wave and Anthropic's cheapest, fastest, most capable small model, built for high-volume, latency-sensitive work such as classification, extraction, routing, and computer use

Anthropic's recommended default for long-running agentic coding and knowledge work — Fable 5.1-level performance on most tasks at Opus pricing, and the first release of the 5.5 wave

The second model of the Claude 5.5 wave and Anthropic's fastest Sonnet yet — a lower-cost complement to Opus 5.5 for well-scoped everyday tasks, bug fixing, and polished documents, slides, and spreadsheets

Anthropic's most intelligent generally available model, built for demanding reasoning and long-horizon agentic work that fixes root causes rather than symptoms

Anthropic's most capable model with breakthrough performance across all tasks

The same model as Claude Fable 5.1, offered by invitation only through Project Glasswing for vetted cybersecurity-defense and life-sciences work that Anthropic's public safeguards would otherwise block

Anthropic's flagship for complex agentic coding and enterprise work, approaching Fable 5 on most benchmarks at half the cost per token

Anthropic's most capable generally available Claude model for ambitious, long-running knowledge work and coding projects

Anthropic's best balance of speed and intelligence, reaching near-Opus quality on coding and agentic work

The same underlying model as Claude Fable 5 with its cyber safeguards lifted, launched for a small group of cyberdefenders and infrastructure providers through Project Glasswing, in collaboration with the US government

Anthropic's most capable model for complex reasoning, long-horizon agentic coding, and high-autonomy professional work

Anthropic's most capable commercial model with frontier coding, vision, and long-horizon agentic performance

Anthropic's gated frontier research preview with step-change autonomous cybersecurity capabilities (Project Glasswing access only)

Anthropic's most advanced model with adaptive thinking and frontier-level reasoning across all domains

Anthropic's default model for Claude.ai with excellent balance of capability and speed

Anthropic's most powerful frontier model with exceptional reasoning, coding, and scientific capabilities

Anthropic's fastest model with enhanced capabilities and efficiency

Anthropic's most advanced model with enhanced capabilities

Anthropic's next-generation balanced model with superior coding and reasoning

World's best coding model with multi-hour agentic workflows

Anthropic's fastest and most cost-effective Claude 3.5 model

Anthropic's enhanced Claude 3.5 with improved reasoning and coding

Anthropic's most capable model with exceptional reasoning abilities

Anthropic's balanced model offering strong performance and speed

Anthropic's fastest model optimized for speed and efficiency

Anthropic's previous generation fast model

Previous generation Claude with strong safety focus