Grok 3 Fast vs Claude 3.7 Sonnet (thinking)

Detailed comparison of capabilities, features, and performance.

Feature
Grok 3 Fast
Claude 3.7 Sonnet (thinking)
Model Image
Grok 3 Fast
Claude 3.7 Sonnet (thinking)
AI Lab
xAI
Anthropic
Context Size
131,000 tokens
204,800 tokens
Max Output Size
8,000 tokens
128,000 tokens
Frontier Model
Yes
Yes
Vision Support
No
Yes
Description
Faster Grok 3 with identical quality (131k context). Low latency for time-sensitive tasks.
The latest Sonnet 3.7 model from Anthropic

Try both models in your workspace

Access both Grok 3 Fast and Claude 3.7 Sonnet (thinking) in a single workspace without managing multiple API keys.

Create your workspace