AnthropicmodelClaude Sonnet 5
Anthropic's new Sonnet model, now the default for Free and Pro users, with performance close to Opus 4.8 at a lower price.
Details
- Plans and runs multi-step tasks on its own, using tools like browsers and terminals, at a level that recently needed larger and pricier models
- Improves on Sonnet 4.6 in reasoning, coding, tool use, and knowledge work, with fewer unwanted behaviors
- Now the default model on the Free and Pro plans, and available to Max, Team, and Enterprise users plus Claude Code and the Claude API
- API name is claude-sonnet-5; introductory pricing is $2 per million input tokens and $10 per million output tokens through August 31, 2026, then $3 and $15
Best for
Running multi-step agent tasks like browsing, coding, and using a terminal without paying Opus-tier prices
When to use it
You want strong autonomous performance but the Opus tier is more than the task needs
Who benefits
Marketers and teams running Claude for research, drafting, and tool-driven work on the Free or Pro plan
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