Grok Code Fast 1

Closed weights xAI August 2025

No estimate

No hardware requirements for this model

The weights for this model have not been published, so it cannot be downloaded or run on your own hardware at any size. It is reachable only through its provider, and no graphics card changes that.

On record

Full specification

Everything on record for this model. Most of it describes how it was trained rather than how it runs — useful context for judging how much work went into it, and how it compares with models built at a different scale.

Origin

Who built this model, where, and when it was published.

Organisation
xAI
Organisation type
Industry
Country
United States of America
Published
28 August 2025

What it does

The problem areas the model was built for. A model can carry several of each.

Domain
Language
Task
Language modeling/generation, Code generation, Code autocompletion

Size

How large the model is and how much data it was trained on. Parameters are the figure that decides whether it fits on a given graphics card.

Training data
tokens

Availability

Whether you can obtain the model and run it on your own hardware, which is what decides if any of the graphics-card figures on this page apply.

Weights
Closed — provider access only
Model access
API access
Training code
Unreleased

"available to end users via third-party partners and through the enterprise-focused xAI API"

How it is classified

Labels the source dataset applies when tracking notable models, and how confident it is in the entry.

Record confidence
Unknown

Sources

Where this record came from and when it was last checked.

Reference
Grok Code Fast 1 Model Card
Last updated
28 November 2025

What the numbers mean

What this model is

Grok Code Fast 1 was published by xAI, in the country recorded as United States of America, during August 2025. The publishing organisation is categorised as industry.

It works in the domain of Language, and is recorded as performing the task of language modeling/generation, Code generation, Code autocompletion.

Because the weights are not available, none of the hardware figures elsewhere on this site apply to it.

Answers

Grok Code Fast 1 — common questions

01

Grok Code Fast 1— what GPU do I need to run it?

None. This is a closed model — its weights were never published, so it cannot be downloaded or run on your own hardware at any price. It is reachable only through its provider.

02

Grok Code Fast 1— is it open source?

No. Its weights have not been published, so it exists only as a service controlled by its owner.

03

Grok Code Fast 1— how many parameters does it have?

No parameter count has been published for it, which is why no memory or speed figure appears on this page.

04

Grok Code Fast 1— who created it?

It was published by xAI, based in United States of America, an organisation categorised as industry.

05

Grok Code Fast 1— when was it released?

It was published in August 2025.

06

Grok Code Fast 1— what is it used for?

It works in the domain of Language, and is recorded as handling the task of language modeling/generation, Code generation, Code autocompletion. Models frequently carry more than one of each, and the tags describe purpose rather than capability limits.

Source

Original publication

Record last updated 28 November 2025

The other direction

Looking at it from the other side?

This page starts from the model. If you already own a card and want to know everything it will run, start from the hardware instead.