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Anthropic upgrades Claude with new Sonnet 5 model, details here
Anthropic has upgraded its AI model by launching Claude Sonnet 5, which surpasses the previous Sonnet 4.6 version. The new model demonstrates enhancements in agentic performance, enabling it to plan, utilize tools, and function autonomously at levels previously only achievable by larger models. Claude Sonnet 5 is now the default option for all users along with an introductory pricing structure that makes it more accessible.
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Published 30 Jun 2026, 18:32 UTC2 min read
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Summary
TL;DR
- Claude Sonnet 5 provides enhanced agentic capabilities.
- New model is designed to run autonomously with better planning.
- Offers improved reasoning and coding abilities compared to Sonnet 4.6.
- Special intro pricing of $2 per million input tokens until August 31, 2026.
- Claude Sonnet 5 is now the standard for all users.
Interesting facts
- Sonnet 5 performs close to the more expensive Opus 4.8 model.
- Mythos 5 and Fable 5 models have been partially restored for select users.
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