Claude Sonnet 4 ⌄
Claude Sonnet 4 ⌄

Chat with Claude Sonnet 4

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Anthropic's strongest Sonnet model — exceptional at long-form writing, careful analysis, and following nuanced instructions.

What Claude Sonnet 4 is best for

  • High-quality writing: essays, articles, scripts, fiction
  • Reading long documents and answering questions about them
  • Sensitive or complex topics that need a thoughtful tone
  • Coding tasks that span multiple files or components
  • Translation and tone-matching across languages

Frequently asked questions

Why is Claude Sonnet 4 a premium model?

It's the most expensive model on the platform per token (4× the multiplier). The output quality on long, complex tasks is usually worth the cost.

Does Claude have a longer context than ChatGPT?

Anthropic's models support large context windows, making them strong for long documents and code.

Can Claude refuse to answer?

Claude is more likely than other models to push back on harmful or ambiguous requests. Rephrase the question if you hit a refusal.

What's the difference between Sonnet 4 and 3.7?

Sonnet 4 is newer and stronger overall, but 3.7 is faster and cheaper for everyday writing.

More questions about AI models? Read our AI models FAQ — comparisons, picks for coding/writing, and what each model is best at.