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Chat model · Anthropic

Claude Sonnet 4.6

Included in Pro · came out February 2026

Clear writing and careful answers for work and home

Claude Sonnet 4.6 is a version of Anthropic's everyday Claude, newer than Sonnet 4.5 and older than Sonnet 5. It suits work emails, explanations and documents, when you don't need the web.

Chat with Claude Sonnet 4.6

Claude Sonnet 4.6 in numbers

What it knows about

Up to August 2025

It learned from information up to August 2025. It can't search the web, so for recent news or prices pick a model that can.

What you can give it

  • Your wordsYes
  • PhotosYes
  • PDFs and filesYes
  • The webNot this one

Real answers

See how Claude Sonnet 4.6 answers

We asked it the same everyday questions as every other model in chatmodel, one try each. This is exactly what came back.

My neighbour watered my plants for two weeks while I was away. Write a short, warm thank-you note I can leave with a small gift. Keep it under 80 words.

Here's a warm thank-you note:

Dear [Name],

Coming home to thriving plants instead of wilted ones meant the world to me! Thank you so much for taking such good care of them while I was away. It was incredibly kind of you, and I truly appreciate you going out of your way. Please enjoy this small gift as a token of my gratitude — I'm lucky to have such a wonderful neighbour!

With thanks, [Your name]

Answered in about 3 seconds · 77 words

Ask it yourself

The Claude family in chatmodel

The newest is Claude Fable 5.1. Ordered by release date.

  1. October 2025Claude Haiku 4.5
  2. November 2025Claude Opus 4.5
  3. February 2026Claude Opus 4.6
  4. February 2026Claude Sonnet 4.6You're here
  5. April 2026Claude Opus 4.7
  6. May 2026Claude Opus 4.8
  7. June 2026Claude Sonnet 5

What it's good for

Try it with one of these

Press “Try this” and chatmodel opens with Claude Sonnet 4.6 selected and the message already written. Change any word you like.

Ask for a day off

“Write a short email to my manager asking for Friday off to take my mother to a hospital appointment. Polite, not over-explaining, and offering to finish my work on Thursday.”

Try this

Prepare for a doctor's visit

“I'm seeing my doctor about tiredness that's lasted two months. Help me prepare: what to tell her, how to describe it clearly, and five questions to ask.”

Try this

Say no politely

“A neighbor has asked me to join the residents' committee. I don't have time this year. Help me say no kindly, and offer something smaller I could help with.”

Try this

A formula for my budget

“In my spreadsheet, column A has dates and column B has amounts I spent. How do I get the total for each month? Explain it step by step for someone who rarely uses spreadsheets.”

Try this

In plain words

Claude Sonnet 4.6 is a chat assistant from Anthropic. It’s one of the Sonnet versions, the middle size of Claude, and sits between Sonnet 4.5 and the newer Sonnet 5.

It thinks before it answers, reads photos and documents, and helps with code and spreadsheets. It doesn’t search the web. People often use a Sonnet for everyday work and home writing.

How to get the most out of it

  1. Say what you want to happen. “I want Friday off without fuss” gives the email a clear aim.
  2. Share what you know before a conversation, so it can help you prepare the right questions.
  3. For spreadsheets, describe your columns. What’s in A, B and C helps it give the right formula.
  4. Ask for a shorter version if the first draft is too long.

How it compares with its siblings

Claude Sonnet 4.5 is the version before it, and Claude Sonnet 5 the one after, which also searches the web. Claude Haiku 4.5 is quicker and lighter. For more care, the Opus models like Claude Opus 4.6 go deeper.

When to pick another model

For recent facts, pick a model with web search, like GPT 5.4. To compare Claude with Google’s models, see Claude vs Gemini. For budgets, try our household budget guide.

Other models worth a look

Claude Sonnet 5

Anthropic

Read the guide

Claude Sonnet 4.5

Anthropic

Read the guide

Claude Opus 4.6

Anthropic

Read the guide

Frequently asked questions

Sonnet 4.6 or Sonnet 5?

Claude Sonnet 5 is newer and can search the web. Sonnet 4.6 is still a capable writer, so try both on the same message if you want to compare.

Does it think before answering?

Yes. It takes a moment on harder questions, which helps it keep track of details.

Can it search the web?

No. In chatmodel it doesn't search the web.

Can it read PDFs and photos?

Yes. It reads documents and understands photos.

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