Compare Grok 3 Thinking by xAI against OpenAI o4 Mini High by OpenAI, in 10 community votes, grok 3 thinking and openai o4 mini high are closely matched, context windows of 128K vs 200K, tested across 14 shared challenges. Updated April 2026.
Grok 3 Thinking and OpenAI o4 Mini High are closely matched based on 10 community votes. Context windows: 128K vs 200K tokens. Compare their real outputs side by side below.
Grok 3 Thinking is made by xai while OpenAI o4 Mini High is from openai. Grok 3 Thinking has a 128K token context window compared to OpenAI o4 Mini High's 200K. In community voting, In 10 community votes, Grok 3 Thinking and OpenAI o4 Mini High are closely matched.
In 10 community votes, Grok 3 Thinking and OpenAI o4 Mini High are closely matched. OpenAI o4 Mini High leads in Image Generation. Based on blind community voting from the Rival open dataset of 10+ human preference judgments for this pair.
Genuinely even. Both are strong choices.
OpenAI o4 Mini High particularly excels in Image Generation.
Grok 3 Thinking uses 334.3x more bold
Ask 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.

Compare Grok 3 Thinking by xAI against OpenAI o4 Mini High by OpenAI, in 10 community votes, grok 3 thinking and openai o4 mini high are closely matched, context windows of 128K vs 200K, tested across 14 shared challenges. Updated April 2026.
Grok 3 Thinking and OpenAI o4 Mini High are closely matched based on 10 community votes. Context windows: 128K vs 200K tokens. Compare their real outputs side by side below.
Grok 3 Thinking is made by xai while OpenAI o4 Mini High is from openai. Grok 3 Thinking has a 128K token context window compared to OpenAI o4 Mini High's 200K. In community voting, In 10 community votes, Grok 3 Thinking and OpenAI o4 Mini High are closely matched.
In 10 community votes, Grok 3 Thinking and OpenAI o4 Mini High are closely matched. OpenAI o4 Mini High leads in Image Generation. Based on blind community voting from the Rival open dataset of 10+ human preference judgments for this pair.
Genuinely even. Both are strong choices.
OpenAI o4 Mini High particularly excels in Image Generation.
Grok 3 Thinking uses 334.3x more bold
Ask 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.

14 fights queued
2+ more head-to-head results. Free. Not a trick.
Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy
14 fights queued
2+ more head-to-head results. Free. Not a trick.
Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy