An upgrade to our Opus class of models, with stronger performance across coding, agentic tasks, and professional work, and the consistency to handle long-running work.
Fetched May 28, 2026
An upgrade to our Opus class of models, with stronger performance across coding, agentic tasks, and professional work, and the consistency to handle long-running work.
Fetched May 28, 2026
We launched Claude Sonnet 5, our most agentic Sonnet model yet, with substantial improvements over Sonnet 4.6 in reasoning, tool use, codin…
Anthropic · ClaudeClaude Sonnet 5 is now available with enhanced agentic capabilities including planning, tool use, and autonomous operation. Performance is…
Anthropic · Anthropic NewsClaude Opus 4.8 fast mode is rolling out in preview on GitHub Copilot, offering significantly faster output token speeds at reduced cost wh…
GitHub · GitHub ChangelogWhat's New We’ve added Opus 4.8 to the model selector in Harvey. Opus 4.8 builds on Opus 4.7 with gains in legal accuracy, output quality,…
Harvey · Release Notes