Today, we're introducing Claude Fable 5 and Mythos 5, two configurations of our next major language model. I'd normally highlight the numbers: It's SOTA on nearly all benchmarks. I want to talk about something else, because with Fable 5 out in the world, I think a third era
Anthropic Claude Sonnet 5 GA

📣 @AnthropicAI's Claude Sonnet 5 is now generally available and rolling out in GitHub Copilot. Early testing for Claude Sonnet 5 showed: • strong results across a range of coding scenarios, particularly for performance on CLI-style tasks. • excellent prompt-cache utilization https://t.co/KTLpnOggXP
More from Anthropic
📣 Claude Fable 5, the first in @AnthropicAI's Mythos model class, is now generally available and rolling out in GitHub Copilot. It is designed for long-horizon, autonomous coding and knowledge-work tasks. Try it out in @code or the GitHub Copilot app. ⬇️ https://t.co/jJTqh35jjY https://t.co/tM3L1znxV2
Today we're introducing Claude for Hardware. Just enter your hardware idea and Blueprint gives you an entire hardware plan for your build. What becomes possible now is insane. https://t.co/HCvFFdGnun
✨ @AnthropicAI's Claude Sonnet 4.6 is now generally available and rolling out in GitHub Copilot. Early testing shows ➡️ It excels on agentic coding ➡️ It is particularly successful in search operations Try it out in @code or Copilot CLI. https://t.co/0DHPMrSoqD https://t.co/VWkO0p9tx0
