Compare GPT-5 Mini by OpenAI against Grok 3 Mini Beta by xAI, tested across 13 shared challenges. Updated April 2026.
GPT-5 Mini and Grok 3 Mini Beta are both competitive models. GPT-5 Mini costs $0.25/M input tokens vs $0.4/M for Grok 3 Mini Beta. Compare their real outputs side by side below.
GPT-5 Mini is made by openai while Grok 3 Mini Beta is from xai. On pricing, GPT-5 Mini costs $0.25/M input tokens vs $0.4/M for Grok 3 Mini Beta.
No community votes yet. On paper, GPT-5 Mini has the edge — bigger model tier, newer.
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 GPT-5 Mini by OpenAI against Grok 3 Mini Beta by xAI, tested across 13 shared challenges. Updated April 2026.
GPT-5 Mini and Grok 3 Mini Beta are both competitive models. GPT-5 Mini costs $0.25/M input tokens vs $0.4/M for Grok 3 Mini Beta. Compare their real outputs side by side below.
GPT-5 Mini is made by openai while Grok 3 Mini Beta is from xai. On pricing, GPT-5 Mini costs $0.25/M input tokens vs $0.4/M for Grok 3 Mini Beta.
No community votes yet. On paper, GPT-5 Mini has the edge — bigger model tier, newer.
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.

8 fights queued
8 fights queued