GPT-5.2 Pro vs Grok 3
Compare GPT-5.2 Pro by OpenAI against Grok 3 by xAI, context windows of 400K vs 128K, tested across 31 shared challenges. Updated April 2026.
Which is better, GPT-5.2 Pro or Grok 3?
GPT-5.2 Pro and Grok 3 are both competitive models. Context windows: 400K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.2 Pro and Grok 3
GPT-5.2 Pro is made by openai while Grok 3 is from xai. GPT-5.2 Pro has a 400K token context window compared to Grok 3's 128K.
No community votes yet. On paper, GPT-5.2 Pro has the edge — newer, bigger context window.
Style Comparison
Grok 3 uses 3.9x more emoji
vsAsk them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
