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xAI model product

Grok Code Fast 1

Grok Code Fast 1 is a speedy and economical reasoning model that excels at agentic coding.

Updated Aug 12, 2026. Default version: Grok Code Fast 1

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LLMBoard score36.0Grok Code Fast 1
Coverage20%1 benchmark families
Context window256KTokens
Official input priceN/AOfficial price unavailable

On this page

  • Specification
  • Capability
  • Benchmarks
  • Arena
  • Runtime
  • Pricing
  • Versions
  • About
  • Compare
  • Similar models
  • FAQ

Grok Code Fast 1 Specifications

Technical details for the model's default version.

Version
Grok Code Fast 1
Released
Aug 28, 2025
Knowledge cutoff
Unknown
Parameters
N/A
Context window
256K
Max output
10K
Inputs
text
Outputs
text
Open weights
No
License
Proprietary

Grok Code Fast 1 Capability Profile

This profile uses the model's current scored version. Arena ratings and prices are shown separately.

Grok Code Fast 1 category scores

Grok Code Fast 1 Benchmark Results

Benchmark scores for Grok Code Fast 1.

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SWE-Bench Verified70.8%5610547.1%CAug 11, 2026

Grok Code Fast 1 Arena Results

Preference and agent-evaluation results for the default version.

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webdevoverall1091164.1783N/AAug 10, 2026

Grok Code Fast 1 Runtime Performance

Provider-specific output speed and catalog latency for Grok Code Fast 1. Runtime does not affect the capability score.

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xAI214.265 tok/s0.506 s256K10KAug 11, 2026

Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.

Grok Code Fast 1 Pricing

Official vendor API pricing appears first, followed by individual provider offers.

Official API
N/A
Official provider
N/A
Lowest third-party
From $0.18 input, $1.35 output per 1M via Jiekou.AI
Tracked offerings
7
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OpenCode Zengrok-codeglobalN/AN/A256KAug 11, 2026
Jiekou.AIgrok-code-fast-1global$0.18$1.35256KAug 11, 2026
Heliconegrok-code-fast-1global$0.20$1.5256KAug 11, 2026
Poexai/grok-code-fast-1global$0.20$1.5256KAug 11, 2026
FrogBotgrok-code-fast-1global$0.20$1.5256KAug 11, 2026
ZenMuxx-ai/grok-code-fast-1global$0.20$1.5256KAug 11, 2026
Abacusgrok-code-fast-1global$0.20$1.5256KAug 11, 2026

Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.

Grok Code Fast 1 Versions

Available versions of this model. The score column identifies the version used in the overall ranking.

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Grok Code Fast 1Aug 28, 202536.0N/A256K10KNoProprietary

What is Grok Code Fast 1?

Key information about Grok Code Fast 1 and its available data.

Grok Code Fast 1 is a speedy and economical reasoning model that excels at agentic coding. Built from scratch with a brand-new model architecture, it features a pre-training corpus rich with programming-related content and post-training datasets that reflect real-world pull requests and coding tasks.

The model has mastered the use of common tools like grep, terminal, and file editing, making it ideal for integration with IDEs. It is exceptionally versatile across the full software development stack and is particularly adept at TypeScript, Python, Java, Rust, C++, and Go.

Data as of 2026-08-11.

Grok Code Fast 1 vs nearby models

Open a comparison with the three ranked models immediately above and below this model.

Grok Code Fast 1vso1Grok Code Fast 1vso3 miniGrok Code Fast 1vsGPT-4.5Grok Code Fast 1vsQwen3 Coder 480B A35BGrok Code Fast 1vsMiniMax M1 40KGrok Code Fast 1vsQwen3 VL 32B

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FAQ

Common questions about Grok Code Fast 1.

When was Grok Code Fast 1 released?

Grok Code Fast 1's default version was released on Aug 28, 2025.

How much does Grok Code Fast 1 cost?

No official standard PAYG price is currently available for Grok Code Fast 1. The lowest tracked third-party offer starts at $0.18 input and $1.35 output via Jiekou.AI.

Who created Grok Code Fast 1?

Grok Code Fast 1 was created by xAI.

What is the context window for Grok Code Fast 1?

The default version has a 256K token context window.

Is Grok Code Fast 1 open weight?

No. The default version is not marked as having publicly available weights.

How many API providers offer Grok Code Fast 1?

7 provider offerings are linked to the default version.

What models should I compare Grok Code Fast 1 with?

Nearby ranked alternatives include o1, o3 mini, GPT-4.5.