xAI: Grok Code Fast 1

Public pricingIntelligence 79/100Large memoryVisionTool use

xAI: Grok Code Fast 1 is a text model for coding, software engineering, and agent workflows. It combines strong coding performance and reliable tool use and agent behavior with a 256K tokens context window and a low-cost profile. Use it for coding, software engineering, and agent workflows when latency, cost, and throughput matters.

Input

$0.20/1M

Output

$1.50/1M

Cached

$0.02/1M

Batch

$0.10/1M

Calculate your Grok Code Fast 1 bill.

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What would Grok Code Fast 1 cost you?

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1,00010,00050,000250,0001M10M

Technical specifications

Grok Code Fast 1 at a glance.

Memory

256,000

tokens

Max reply

10,000

tokens

Memory tier

Large

an entire book or large codebase

Tokenizer

grok

Released

Aug 2025

Training cutoff

Mar 2025

Availability

Public pricing

Status

active

What it can do

Capabilities & limits.

  • Understands images
  • Deep step-by-step thinking
  • Uses tools / calls functions
  • Strict JSON output
  • Streams replies
  • Fine-tunable on your data

When to pick Grok Code Fast 1

  • Screenshot analysis, image understanding, or document OCR.
  • Agentic workflows that call tools or APIs.
  • Long documents, full codebases, or extensive chat histories.
  • High-volume workloads where unit cost matters.

When to look elsewhere

  • Very latency-sensitive, real-time apps where every millisecond counts.

Alternatives

Similar models to compare.

FAQ

Grok Code Fast 1 — the questions we see most.

Pricing, capabilities, alternatives — generated from the same data that powers the calculator above.

Get instant answers from our AI agent

At a typical workload of 50,000 conversations a month with 1,500-token prompts and 800-token replies, Grok Code Fast 1 costs roughly $75 per month. Input is $0.20 /1M tokens and output is $1.50 /1M tokens.
Grok Code Fast 1 has a 256,000-token context window (large memory — an entire book or large codebase). That means you can fit about 48,000 words of input and history in a single call.
Beyond text generation, Grok Code Fast 1 supports understanding images, calling functions / tools, strict JSON output. It streams replies by default.
Grok Code Fast 1 was released in August 2025, with training data cut off around March 2025.
Models in a similar class include GPT-5.4 Nano, Claude 3 Haiku, Gemini 3.1 Flash Lite Preview. The "Similar models" section below this FAQ links into each.

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