Compare MiMo-V2.5 by Xiaomi against OpenAI o4-mini by OpenAI, tested across 53 shared challenges. Updated April 2026.
MiMo-V2.5 and OpenAI o4-mini are both competitive models. MiMo-V2.5 costs $0.4/M input tokens vs $1.1/M for OpenAI o4-mini. Compare their real outputs side by side below.
MiMo-V2.5 is made by xiaomi while OpenAI o4-mini is from openai. On pricing, MiMo-V2.5 costs $0.4/M input tokens vs $1.1/M for OpenAI o4-mini.
No community votes yet. On paper, MiMo-V2.5 has the edge — bigger model tier, newer, bigger context window.
MiMo-V2.5 uses 594.5x 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
The right persona beats the bigger model. Sometimes.
52 system prompts. 156 generations. One small model, on purpose.
+1.49
composite-score lift from empty prompt to best persona
52
personas
156
responses
3
blind judges
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

Compare MiMo-V2.5 by Xiaomi against OpenAI o4-mini by OpenAI, tested across 53 shared challenges. Updated April 2026.
MiMo-V2.5 and OpenAI o4-mini are both competitive models. MiMo-V2.5 costs $0.4/M input tokens vs $1.1/M for OpenAI o4-mini. Compare their real outputs side by side below.
MiMo-V2.5 is made by xiaomi while OpenAI o4-mini is from openai. On pricing, MiMo-V2.5 costs $0.4/M input tokens vs $1.1/M for OpenAI o4-mini.
No community votes yet. On paper, MiMo-V2.5 has the edge — bigger model tier, newer, bigger context window.
MiMo-V2.5 uses 594.5x 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
The right persona beats the bigger model. Sometimes.
52 system prompts. 156 generations. One small model, on purpose.
+1.49
composite-score lift from empty prompt to best persona
52
personas
156
responses
3
blind judges
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
