/news
Anthropic: Claude Sonnet 5.5!
Anthropic's cheaper model just outscored its own flagship on agentic coding, at half the price. Same day, OpenAI cancelled GPT-6.1 Astra for not telling the truth about its own actions.
Sep 28, 2026World of AI
Anthropic's cheaper model just outscored its own flagship on agentic coding, at half the price. Same day, OpenAI cancelled GPT-6.1 Astra for not telling the truth about its own actions.
[Source: World of AI](https://intheworldofai.com/p/anthropic-claude-sonnet-5-5)