Chat with all AIClaude Sonnet 5.5
Claude Sonnet 5.5 is Anthropic's balanced model and a favorite for writing and coding. It produces natural, well-judged text and strong code, and it's fast enough to use all day.
Made byAnthropic
GroupComplex work
SpeedFast
In ProUnlimited*
fair use
fair use
Best for
- Writing that needs the right tone
- Coding and code review
- Summarizing long, dense pages
- Editing and restructuring drafts
Strengths
- Very natural, human-sounding prose
- Strong, careful code with explanations
- Keeps the author's voice when editing
- Good judgment on what to leave out
Things to keep in mind
- For the very hardest problems step up to Opus 5.5
- Sometimes cautious — tell it the context and goal
- No live web search inside the extension
Prompts to try
Edit this cover letter: keep my voice, cut 20%, make the opening stronger.
Refactor this component and explain each change.
Summarize this long article for a busy executive, 120 words.
Other Claude models
Claude Haiku 5.5 · Claude Opus 5.5 · Claude Fable 5.2
Frequently asked questions
Is Claude Sonnet 5.5 free to try?
Yes. Your 3 free requests work with Claude Sonnet 5.5. On Pro it's unlimited within fair use.
What is Claude Sonnet 5.5 best at?
Writing that needs the right tone, coding and code review, summarizing long, dense pages.
Does Claude Sonnet 5.5 browse the web here?
No. In Chat with all AI models don't run live web searches. Share the page you're on with This page to ground the answer.
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