How I AI · Tuesday, June 30, 2026
Anthropic has released Claude Sonnet 5, with claims that it offers Opus-level task performance at Sonnet model prices. The new model is touted as being more agentic than previous Sonnet versions and is positioned as a more affordable alternative for complex tasks.
“Now, is it Mythos? No. Is it Fable? No. But it is Claude Sonnet 5. Anthropic is claiming it's the most agentic Sonnet model yet. And we will get Opus level tasks at Sonnet level prices.”