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MacRumors
Anthropic Launches Claude Sonnet 5 With Near-Opus Performance at a Lower Price
Anthropic has introduced Claude Sonnet 5, which offers near-Opus performance at a more affordable price. This new AI model enhances capabilities in planning, tool usage, and executes tasks autonomously, marking a significant improvement over Sonnet 4.6. With pricing tiers for different plans, it becomes the default for both Free and Pro users. The model is designed to complete complex tasks, reduce hallucination rates, and appropriately handle malicious requests.
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Published 30 Jun 2026, 21:45 UTC1 min read
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Summary
TL;DR
- Claude Sonnet 5 is introduced as a more affordable AI model.
- It narrows the performance gap between Sonnet and Opus models.
- Improved capabilities include reasoning, autonomous task completion, and tool use.
- Sonnet 5 shows lower hallucination rates and higher task completion rates.
- New pricing for input and output tokens is set for a limited time.
Interesting facts
- Sonnet 5 can check its own output without prompts.
- It is available across all pricing plans, making it accessible to a wider audience.
- Price will increase after August 31, indicating a promotional strategy.