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Anthropic
Introducing Claude Sonnet 5
Claude Sonnet 5 has been officially released, positioned as the most advanced agentic Sonnet model to date. It significantly improves on its predecessor, Claude Sonnet 4.6, and offers enhanced capabilities in areas such as reasoning and tool usage, while maintaining lower costs. The model is now available across various subscription plans and is expected to elevate developer productivity through its improved features. The launch pricing strategy aims to provide accessible options for developers looking to harness advanced AI capabilities without the associated costs of larger models.
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Published 30 Jun 2026, 18:22 UTC8 min read
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Summary
TL;DR
- Claude Sonnet 5 is designed for improved agentic performance.
- The model is priced competitively, with an introductory offer for early adopters.
- It achieves enhanced safety features compared to previous versions.
- Sonnet 5 delivers substantial improvements in reasoning, coding, and tool use.
- Metrics show Sonnet 5 closely matches the capabilities of more expensive models.
Interesting facts
- Sonnet 5 can execute tasks autonomously and more effectively than previous models.
- It features a lower risk of undesirable behaviors, making it safer for deployment.
- The pricing strategy includes introductory offers to attract developers.