Grok 4 Fast vs Gemini 2.5 Pro

Detailed comparison of capabilities, features, and performance.

Feature
Grok 4 Fast
Gemini 2.5 Pro
Model Image
Grok 4 Fast
Gemini 2.5 Pro
AI Lab
xAI
Google
Context Size
2,000,000 tokens
1,048,756 tokens
Max Output Size
30,000 tokens
65,535 tokens
Frontier Model
Yes
Yes
Vision Support
No
Yes
Description
Faster Grok 4 with identical quality (2m context). Low latency for time-sensitive tasks and huge context window.
A powerful reasoning model for problem-solving tasks and multimodal capabilities.

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