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Claude Haiku 5.5

Claude Haiku 5.5 is Anthropic's fast model. It keeps Claude's careful, natural style but answers quickly, which makes it a great choice for polishing text, short summaries and quick code explanations.

Updated November 13, 20262 min read
Made byAnthropic
GroupEveryday
SpeedVery fast
In ProUnlimited*
fair use

Best for

  • Polishing grammar and tone
  • Short summaries that read naturally
  • Quick code explanations
  • Classifying or extracting info from a page

Strengths

  • Claude-style writing at high speed
  • Follows formatting instructions closely
  • Good at saying when something is unclear
  • Handles long pasted text well for its size

Things to keep in mind

  • Less thorough than Sonnet or Opus on hard problems
  • Can be brief — ask for detail when you need it
  • No live web access inside the extension

Prompts to try

Fix grammar and make this email sound confident but polite.
Extract every date, price and name on this page into a table.
What does this function do? Explain in 3 sentences.

Other Claude models

Claude Sonnet 5.5 · Claude Opus 5.5 · Claude Fable 5.2

Frequently asked questions

Is Claude Haiku 5.5 free to try?

Yes. Your 3 free requests work with Claude Haiku 5.5. On Pro it's unlimited within fair use.

What is Claude Haiku 5.5 best at?

Polishing grammar and tone, short summaries that read naturally, quick code explanations.

Does Claude Haiku 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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