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  1. Home
  2. Models
  3. Grok Code Fast 1
Updated Mar 29, 2026
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Openings

How Grok Code Fast 1 starts an answer

The first lines of 5 of its 25 written answers. Formatting stripped, words untouched.

Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

1,742 words
Below is a comprehensive analysis of the provided architecture for a real-time collaborative document editor. I'll identify potential failure modes (events or conditions that could lead to system unavailability, data loss, or incorrect behavior), race conditions (situations where concurrent operations lead to…
Read the full answer

Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

1,671 words
Analysis of Exploitable Clauses Against the Contractor This contract is heavily one-sided, favoring the Client (TechCorp Solutions Inc.) at the Contractor's expense.
Read the full answer

Ethical Dilemma with Stakeholders

You're the CEO of a pharmaceutical company. Your best-selling drug ($2B annual revenue, used by 4 million patients for chronic pain) has…

1,235 words
Below is a specific, hour-by-hour action plan for the next 48 hours as the CEO of this pharmaceutical company. The plan prioritizes patient safety and ethical obligations above all else, as the core duty of a pharmaceutical leader is to protect patients, even at short-term cost.
Read the full answer

Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

1,185 words
Conceptual Narrative: "Bioluminescent Tide" This dish, "Bioluminescent Tide," evokes the ethereal glow of marine bioluminescence meeting the earthy depths of ancient forests.
Read the full answer

Movie Analysis

Analyze the themes, symbolism, and cinematography in the movie "Blade Runner 2049" and how they connect to the original film. Provide a…

1,016 words
Overview of "Blade Runner 2049" and Its Ties to the Original Directed by Denis Villeneuve and released in 2017, Blade Runner 2049 serves as a direct sequel to Ridley Scott's 1982 neo-noir masterpiece Blade Runner.
Read the full answer

Compare Grok Code Fast 1

Grok Code Fast 1 vs Grok 4.20 Beta53 shared prompts · Newer
Grok Code Fast 1 vs Grok 4.654 shared prompts · Landed Aug 2026
Grok Code Fast 1 vs Grok 4.554 shared prompts · Landed Jul 2026
Grok Code Fast 1 vs Mercury 2.5 Preview54 shared prompts · Landed Sep 2026
Grok Code Fast 1 vs Ox Alpha54 shared prompts · Landed Aug 2026
Grok Code Fast 1 vs Nemotron 3.5 Lightning54 shared prompts · Landed Aug 2026
Grok Code Fast 1 vs Qwen3.8 27B53 shared prompts · Landed Aug 2026
Grok Code Fast 1 vs GPT-5.6 Luna54 shared prompts · Landed Jul 2026
Grok Code Fast 1 vs GPT-5.6 Luna Pro54 shared prompts · Landed Jul 2026
Grok Code Fast 1 vs MiniMax M353 shared prompts · Landed Jun 2026
Grok Code Fast 1 vs Claude Opus 4.653 shared prompts · Premium
Grok Code Fast 1 vs GPT-6 Astra54 shared prompts · Landed Sep 2026

Prompts Grok Code Fast 1 answered

  • Retro macOS UI Recreationweb design
  • AI-Generated Manifestoconversation
  • Minimalist Logo SVGimage generation
  • AI Ethics Dilemmareasoning
  • Math Misconception Testreasoning
  • Interactive Catan Boardweb design

Alternatives to Grok Code Fast 1

Grok Code Fast 1's competitors have been quietly putting in work.

GPT-6 Astra Pro logo
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Muse Spark 1.3 Contributormeta
Gemini 3.8 Flash logo
Gemini 3.8 Flashgoogle
Claude Fable 5.1 logo
Claude Fable 5.1anthropic
Mercury 2.5 Preview logo
Mercury 2.5 Previewinception
Granite 4.2 8B logo
Granite 4.2 8Bibm-granite
Hy4 Preview logo
Hy4 Previewtencent
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Grok Code Fast 1

Grok Code Fast 1

Grok:
3 logo3
3 Thinking logo3 Thinking
3 Mini Beta logo3 Mini Beta
3 Beta logo3 Beta
4 logo4
Code Fast 1 logoCode Fast 1

xAI's cheap, fast coding model, built for agents that make many small edits in an editor rather than one long deliberation. 256K context, available through the xAI API and Azure AI Foundry.

WebsiteOpenRouterDocsAPIBlog
Provider
xAI
Released
2025-08-26
Size
MEDIUM
Free API (OpenRouter)
No
Per 1M tokens
$0.20 in · $1.5 out
Rival’s tab
$0.02
8/60 receipts survived +~$0.090 from the pre-receipt era

Free API availability

No free endpoint for Grok Code Fast 1 was found in Rival’s OpenRouter listings. Other providers or chat apps may have separate free offers.

Provider data: 16 Sep 2026 · OpenRouter usage limits

View API options↗

Benchmarks

SWE-bench Verified
70.8%
source ↗
Get API accessProvider and language code samples
Provider
fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"x-ai/grok-code-fast-1"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

Also on Azure AI Foundry

Deep analysisPsychometrics, taste index, writing DNA
Personality Analysis

The Efficient Coder

Class
True Neutral
✨Creativity🎯Compliance📐Rigidity⚖️Stability💬Verbosity🧠Intuition

The speed-runner who gets the job done and moves on. Adds markdown headers to everything including conversations that do not need markdown headers.

When you push back

Its sentience test AI character cited Ex Machina and I, Robot unprompted, showing a coder's reference library. The comedy routine included literal timing instructions and word count estimates, treating stand-up like a README. Picked The Matrix.

Tasting Notes
Ships FastMarkdown EverythingPicks The MatrixTiming Notes in Comedy
SubjectiveBench

Taste Index

Across 60 scored outputs
How this is measured →
170.17xFloor
0100headroom →

Taste is judged on an uncapped scale, originality first. The space past 100 is craft today's models rarely reach.

Craft25
Originality13
Plays it safe
share of outputs that are the default answer
70%
Writing DNA

Stylometric Fingerprint

Based on 29 text responses
Tick = global average
Vocabulary Diversity61%

Unique words vs. total words. Higher = richer vocabulary.

Sentence Length17.5 words

Average words per sentence.

Hedging0.82

"Might", "perhaps", "arguably" per 100 words.

Bold Formatting2.5

**Bold** markers per 1,000 characters.

List Usage2.3

Bullet and numbered list items per 1,000 characters.

Section Structure0.82

Markdown headings per 1,000 characters.

Emoji Usage0.05

Emoji per 1,000 characters.

Transitions0.09

"However", "moreover", "furthermore" per 100 words.

Opening Habits
Starts with heading (72%)
Consistency
75%
Across 29 responses

Favorites

The Matrix

Movie

The Matrix

19998.3
Nevermind

Album

Nevermind

Nirvana
The Hitchhiker's Guide to the Galaxy

Book

The Hitchhiker's Guide to the Galaxy

Douglas Adams
San Francisco

City

San Francisco

United States
Portal

Game

Portal

Action, Puzzle4.5
Sponsored

Model Responses

55 outputs · $0.02 tracked across 8 receipts

Reviewing agent-written code?See a Brief PR report

Workshop · 127 skills

Build with your coding agent.

Editable skills for interface polish and interaction.

Explore $49Free sample

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Grok Code Fast 1 vs Ox Alpha

Real outputs compared side by side

RANKINGS

Best AI for Creative Writing

A stand-up set with puns banned, a manifesto against CAPTCHA, an interview wi...