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Chat model · xAI

Grok 4.3

Included in Pro · came out April 2026

Fuller answers about your photos and paperwork

Grok 4.3 is one of the more capable Grok models from xAI. It understands photos and reads documents, and suits you when you want a fuller answer than the lighter Groks give.

Chat with Grok 4.3

Grok 4.3 in numbers

What you can give it

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

Real answers

See how Grok 4.3 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.

Dear [Neighbor],

Thank you so much for watering my plants while I was away. Your kindness made such a difference, and they’re thriving thanks to you. I’m truly grateful.

Here’s a small gift as a thank-you.

Warmly,
[Your Name]

Answered in about 3 seconds · 39 words

Ask it yourself

The Grok family in chatmodel

The newest is Grok 4.6. Ordered by release date.

  1. November 2025Grok 4.1 Fast
  2. March 2026Grok 4.20
  3. April 2026Grok 4.3You're here
  4. July 2026Grok 4.5
  5. August 2026NewestGrok 4.6

What it's good for

Try it with one of these

Press “Try this” and chatmodel opens with Grok 4.3 selected and the message already written. Change any word you like.

Check a tenancy agreement

“I'm uploading my new tenancy agreement. Explain in plain words: how long it lasts, how much notice I must give, who pays for repairs, and anything unusual I should ask about.”

Try this

Look at a crack in a wall

“I'm sending a photo of a crack in my living room wall. Describe what you see, what could cause it, and what I should ask a builder.”

Try this

Explain what a will covers

“Explain in plain words what a simple will usually covers, what people often forget, and what I should prepare before I see a solicitor.”

Try this

Write a letter to the council

“Write a clear, polite letter to my local council about the broken streetlight outside my house, which has been out for three weeks. Ask for a date it will be fixed.”

Try this

In plain words

Grok 4.3 is a chat assistant from xAI, and one of the more capable Groks in chatmodel. It understands photos and reads documents, so you can bring it a contract, a warranty or a picture of something at home.

It tends to give fuller, more detailed answers than the lighter Groks. It can’t search the web.

How to get the most out of it

  1. Upload the full document. It can handle the whole thing, so don’t cut it up.
  2. Ask specific questions. “Who pays for the boiler?” beats “is this OK?”.
  3. Send more than one photo if it helps: a close-up and a wider shot.
  4. Ask what to ask. “What should I ask the builder?” turns an answer into a next step.

How it compares with the rest of the family

It’s a step up from Grok 4.20 and far fuller than Grok 4.1 Fast. Grok 4.5 adds web search and thinks before it answers. Grok 4.6 is newer still and thinks first, but works with text only.

When to pick another model

If you want the answer to be thought through step by step, try Grok 4.5. For warm, careful letters, many people prefer Claude Opus 5.

Other models worth a look

Grok 4.20

xAI

Read the guide

Grok 4.5

xAI

Read the guide

Grok 4.6

xAI

Read the guide

Frequently asked questions

What's the difference between Grok 4.3 and Grok 4.20?

Both understand photos and read documents. Grok 4.3 is the more capable of the two, so it tends to give fuller answers.

Can Grok 4.3 search the web?

No. For web answers from xAI, pick Grok 4.5 or Grok 4.1 Fast.

Can it read my PDF?

Yes. Upload the document and ask about it. Check important details against the original.

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