GPT-5.1 Chat vs OpenAI o4 Mini High
Compare GPT-5.1 Chat and OpenAI o4 Mini High, both from OpenAI, context windows of 128K vs 200K, tested across 53 shared challenges. Updated April 2026.
Which is better, GPT-5.1 Chat or OpenAI o4 Mini High?
GPT-5.1 Chat and OpenAI o4 Mini High are both competitive models. GPT-5.1 Chat costs $1.25/M input tokens vs $1.1/M for OpenAI o4 Mini High. Context windows: 128K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.1 Chat and OpenAI o4 Mini High
GPT-5.1 Chat is made by openai while OpenAI o4 Mini High is from openai. GPT-5.1 Chat has a 128K token context window compared to OpenAI o4 Mini High's 200K. On pricing, GPT-5.1 Chat costs $1.25/M input tokens vs $1.1/M for OpenAI o4 Mini High.
No community votes yet. On paper, GPT-5.1 Chat has the edge — bigger model tier, newer.
Style Comparison
GPT-5.1 Chat uses 108.9x more bold
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.
