Executive Summary
Anthropic has released Claude Sonnet 5, an upgraded AI model now available on the AI Gateway platform. This new version significantly improves upon its predecessor in coding, agentic tasks, instruction following, and document parsing. Sonnet 5 is positioned to handle complex tasks that previously required a higher-tier Opus model, but at the more accessible Sonnet pricing, including a special introductory rate.
Key Takeaways
* Product Name: Claude Sonnet 5
* Primary Improvements: Enhanced performance for coding and agentic work, better instruction following, and stronger document parsing and long-context memory.
* Performance Tier: Achieves outcomes on many tasks that previously required a more powerful and expensive Opus model.
* Availability: Available now for use on AI Gateway by setting the model to `anthropic/claude-sonnet-5`.
* Launch Pricing: $2 per million input tokens and $10 per million output tokens, valid through August 31, 2026.
* Standard Pricing: After the launch period, the price will be $3 per million input tokens and $15 per million output tokens.
Strategic Importance
This launch provides developers with Opus-level capabilities at a significantly lower price point, making advanced agentic and coding tasks more economically viable. It intensifies competition in the mid-tier model market by narrowing the performance gap with top-tier models.