Grok 3 Fast vs GPT-4o mini

Detailed comparison of capabilities, features, and performance.

Feature
Grok 3 Fast
GPT-4o mini
Model Image
Grok 3 Fast
GPT-4o mini
AI Lab
xAI
OpenAI
Context Size
131,000 tokens
128,000 tokens
Max Output Size
8,000 tokens
16,384 tokens
Frontier Model
Yes
No
Vision Support
No
Yes
Description
Faster Grok 3 with identical quality (131k context). Low latency for time-sensitive tasks.
OpenAI's affordable and intelligent small model for fast lightweight tasks

Try both models in your workspace

Access both Grok 3 Fast and GPT-4o mini in a single workspace without managing multiple API keys.

Create your workspace