anthropic/claude-sonnet-5Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work.
Scores on standardized evaluations. Higher is better — and rank shows where Claude Sonnet 5 lands among all models tracked on Model Beat.
Graduate-level scientific reasoning
Frontier of human expert knowledge
Scientific research coding
Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work.
Claude Sonnet 5 is an AI model developed by Anthropic, part of the Claude family, released Jun 30, 2026.
Claude Sonnet 5 is priced at $2 per million input tokens and $10 per million output tokens (representative pricing via OpenRouter).
Claude Sonnet 5 supports a context window of up to 1M tokens.
On standardized evaluations tracked by Epoch AI, Claude Sonnet 5 scores 53.6% on SciCode, 39.6% on Humanity's Last Exam, 91.1% on GPQA Diamond.
Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated July 2026.