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Chat model · xAI

Grok 4.1 Fast

Included in Pro · came out November 2025

Fast answers, with a quick look at the web

Grok 4.1 Fast is a quick chat model from xAI. It answers straight away, without a thinking step, and it can search the web for things that have just happened.

Chat with Grok 4.1 Fast

Grok 4.1 Fast in numbers

What you can give it

  • Your wordsYes
  • PhotosNot this one
  • PDFs and filesNot this one
  • The webYes

Real answers

See how Grok 4.1 Fast 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's Name],

Thank you so much for watering my plants while I was away—they're thriving thanks to your kindness! It meant the world to come home to such healthy greenery. You've been a lifesaver!

With heartfelt thanks,
[Your Name]

Answered in about 1 seconds · 40 words

Ask it yourself

The Grok family in chatmodel

The newest is Grok 4.6. Ordered by release date.

  1. November 2025Grok 4.1 FastYou're here
  2. March 2026Grok 4.20
  3. April 2026Grok 4.3
  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 4.1 Fast selected and the message already written. Change any word you like.

Check today's news

“Search the web and give me the three biggest news stories today, one sentence each, in plain words.”

Try this

Find a match time

“Search the web: when is the next match of my local football team, Aston Villa, and where can I watch it on TV?”

Try this

Get a quick gift idea

“Give me five gift ideas under 30 for my brother-in-law, who likes cooking and old films. One line each.”

Try this

Text that I'm late

“Write a short, polite text to my hairdresser saying I'm stuck in traffic and will be 15 minutes late.”

Try this

In plain words

Grok 4.1 Fast is a chat assistant from xAI. It’s built for speed: it answers straight away, without a thinking step. And it can search the web, so it can help with things happening right now.

It works with text only. It can’t look at photos or read documents.

How to get the most out of it

  1. Keep questions short. It’s at its best with one clear question.
  2. Say “search the web” when you want current information.
  3. Ask for one line each. Short lists suit its quick style.
  4. Check the source before you act on anything important, like travel changes.

How it compares with the rest of the family

It’s the lightest Grok in chatmodel. Grok 4.20 and Grok 4.3 understand photos and documents but can’t search the web. Grok 4.5 does both and thinks before it answers. Grok 4.6 is newer still and thinks first, with text only. xAI also makes Grok Imagine Image 2.0 for pictures.

When to pick another model

For plans with many details, a thinking model does better: try Grok 4.5 or GPT 5.5. For careful writing, see the best AI for writing.

Other models worth a look

Grok 4.5

xAI

Read the guide

Grok 4.20

xAI

Read the guide

Grok 4.6

xAI

Read the guide

Frequently asked questions

What does 'Fast' mean in Grok 4.1 Fast?

It answers straight away, without taking time to think first. That makes it quick for simple questions, but less careful on hard ones.

Can Grok 4.1 Fast search the internet?

Yes. It can search the web for recent information.

Can I send it a photo?

No. It works with text only. Grok 4.20, Grok 4.3 and Grok 4.5 understand photos.

All of these models, in one place

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