Anthropic Claude Sonnet 5 is here: Key capabilities, availability and other details
Follow UsAnthropic has announced its new AI model dubbed Claude Sonnet 5.
The company claims Claude Sonnet 5 is its most agentic Sonnet model yet.
The company is making Claude Sonnet 5 the default model for Free and Pro plans.
Anthropic has announced its new AI model dubbed Claude Sonnet 5. The company claims Claude Sonnet 5 is its most agentic Sonnet model yet. Claude Sonnet 5 can plan tasks, use tools such as browsers and terminals, and complete work with less human guidance. Anthropic says the model is a major upgrade over Claude Sonnet 4.6 in areas such as reasoning, coding, tool use and knowledge-based tasks. The company also claims the model is safer to use and is better at refusing harmful requests. Below is everything you need to know about Claude Sonnet 5, including its key capabilities, availability and more.
SurveyClaude Sonnet 5: Key capabilities
Anthropic says Claude Sonnet 5 is built to complete tasks more independently than previous Sonnet models. The company says it can create plans, use different tools when needed, and continue working without requiring constant user input.
The company claims the model delivers performance close to its larger Opus 4.8 model while keeping costs lower. It also says Claude Sonnet 5 offers better reasoning, coding skills, stronger tool use and improved performance in knowledge work. Also, Claude Sonnet 5 is said to be better at refusing malicious requests, resisting prompt injection attacks.
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“The model shows lower rates of hallucination and sycophancy than Sonnet 4.6. On our automated behavioral audit, which tests a wide range of misaligned behaviors such as cooperation with misuse and deception, Sonnet 5 scored lower (that is, safer) overall,” the company said.
Anthropic also noted that the company did not specifically train Claude Sonnet 5 on cybersecurity tasks. The model can perform basic and harmless cyber-related work, but it performs lower than its Opus models on advanced exploit development.
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Claude Sonnet 5: Availability and price
Claude Sonnet 5 is available starting today across Free, Pro, Max, Team and Enterprise plans. The company is making it the default model for Free and Pro plans. For developers, Anthropic has introduced the model at an introductory price of $2 per million input tokens and $10 per million output tokens until August 31, 2026. After that, the pricing will increase to $3 per million input tokens and $15 per million output tokens.
