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Chat model · Anthropic

Claude Opus 5

Included in Pro · came out July 2026

For letters, long documents and questions that need care

Claude Opus 5 is the Opus that came after Claude Opus 4.8, made by Anthropic. People often pick it when the words matter and they want a thoughtful, natural answer.

Claude Opus 5 in numbers

What it knows about

Up to May 2026

It learned from information up to May 2026. For anything newer it can search the web and show you where it found it.

What you can give it

  • Your wordsYes
  • PhotosYes
  • PDFs and filesYes
  • The webYes

Real answers

See how Claude Opus 5 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 note you can use — just swap in the names:


Dear [Neighbour's name],

Thank you so much for looking after my plants while I was away. Coming home to green, happy leaves instead of a row of sad twigs made all the difference — and it was such a relief knowing they were in good hands.

Please enjoy this small token of my thanks. I'm so lucky to have you next door!

Warmly, [Your name]


(70 words)

Answered in about 6 seconds · 81 words

Ask it yourself

The Claude family in chatmodel

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

  1. February 2026Claude Sonnet 4.6
  2. April 2026Claude Opus 4.7
  3. May 2026Claude Opus 4.8
  4. June 2026Claude Sonnet 5
  5. July 2026Claude Fable 5
  6. July 2026Claude Opus 5You're here
  7. August 2026NewestClaude Fable 5.1

What it's good for

Try it with one of these

Press “Try this” and chatmodel opens with Claude Opus 5 selected and the message already written. Change any word you like.

Write a condolence note

“Help me write a short condolence card to a friend whose mother has died. I knew her mother a little: she loved her garden and always made us tea. Keep it warm and simple, no clichés, under 80 words.”

Try this

Reply kindly to a difficult email

“Help me reply to this email from my sister. I want to stay close to her but I can't host Christmas this year. Be kind, clear and not defensive. Here is her email:”

Try this

Summarize a long contract

“I'm going to upload a contract. Tell me in plain words what I'm agreeing to, any costs or penalties, the notice period, and anything unusual I should ask about before I sign.”

Try this

Think through a big decision

“My mother is 84 and lives alone two hours away. I'm thinking about her moving in with us. Help me think it through: the questions I should ask her, my family and myself, and the options in between.”

Try this

Write a toast for a 60th

“Write a 2-minute toast for my husband's 60th birthday. He loves fishing, bad jokes and our three grandchildren. Make it funny at the start and touching at the end.”

Try this

In plain words

Claude Opus 5 is a chat assistant from Anthropic, a company that makes the Claude models. It’s a step up from Claude Opus 4.8, and a step below Claude Fable 5.1.

What people tend to notice first is how it writes. It sounds natural, it picks up your tone, and it handles delicate topics with care. It also thinks before it answers, so it’s slower than lighter models, but steadier on long or tricky jobs.

How to get the most out of it

  1. Tell it who the words are for. “My neighbor, who I don’t know well” or “my boss, who likes short emails”.
  2. Share a sample of how you write. Paste an email you sent before and ask it to match the tone.
  3. Upload the whole document. It’s good at reading long texts, so there’s no need to cut them into pieces.
  4. Ask for two versions. One warmer, one more direct. Then pick, or mix the two.
  5. Say how long. It can be thorough, so “under 100 words” or “one paragraph” keeps it tidy.

When to pick another model

For quick, everyday questions, Claude Sonnet 5 gives you the same Claude style with less waiting. If you want an all-rounder from the company behind ChatGPT, try GPT 5.5, and read ChatGPT vs Claude to see how they differ.

If writing is your main use, our page on the best AI for writing compares the top choices, and the Help me write tool gets you started in one click.

How it compares

Other models worth a look

Frequently asked questions

What's the difference between Claude Opus 5 and Claude Sonnet 5?

Both are made by Anthropic. Opus is the bigger, more careful one, good for long or delicate jobs. Sonnet tends to be quicker and handles most everyday tasks well.

Is Claude better than ChatGPT?

It depends on the job. Many people prefer Claude for writing and long documents. See our comparison of ChatGPT vs Claude for a task-by-task answer.

Can Claude Opus 5 read my documents?

Yes. You can upload PDFs and photos and ask questions about them. It's worth checking important details against the original.

Can it search the web?

Yes. It can look things up on the web when your question needs recent information.

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