Cracked AI Engineering

Grok 3 vs Grok 3 Fast

Grok 3 is more cost-effective. Compare full specs, pricing, and choose the best model for your use case.

Quick Overview

Grok 3

xAI

131K tokens context • $3.00 / $15.00 per 1M tokens

View full specifications →

Grok 3 Fast

xAI

131K tokens context • $5.00 / $25.00 per 1M tokens

View full specifications →

Detailed Comparison

Specification
Grok 3
Grok 3 Fast
Provider
xAI
xAI
Context Window
131K tokens
131K tokens
Max Output Tokens
8K tokens
8K tokens
Input Pricing (per 1M tokens)
$3.00
$5.00
Output Pricing (per 1M tokens)
$15.00
$25.00
Release Date
Feb 2025
Feb 2025

Capabilities

Capability
Grok 3
Grok 3 Fast
Text Generation
Function Calling

Which Model Should You Choose?

Choose Grok 3 if:

  • • Cost efficiency is a priority

Choose Grok 3 Fast if: