Compare GPT-2 and GPT-5.1 Codex Max, both from OpenAI, tested across 7 shared challenges. Updated April 2026.
GPT-2 and GPT-5.1 Codex Max are both competitive models. Compare their real outputs side by side below.
GPT-2 is made by openai while GPT-5.1 Codex Max is from openai.
No community votes yet. On paper, GPT-5.1 Codex Max has the edge — bigger model tier, newer.
GPT-5.1 Codex Max uses 36.4x more hedging
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-2 and GPT-5.1 Codex Max, both from OpenAI, tested across 7 shared challenges. Updated April 2026.
GPT-2 and GPT-5.1 Codex Max are both competitive models. Compare their real outputs side by side below.
GPT-2 is made by openai while GPT-5.1 Codex Max is from openai.
No community votes yet. On paper, GPT-5.1 Codex Max has the edge — bigger model tier, newer.
GPT-5.1 Codex Max uses 36.4x more hedging
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.
