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OpenAI: GPT-5 Nano vs Xiaomi: MiMo-V2.5-Pro

GPT-5 Nano (medium) leads on average score with 6.1 vs 5.5. MiMo-V2.5-Pro has the lower benchmark cost at $0.068 vs $0.114. MiMo-V2.5-Pro is faster at 4.12s vs 54.87s, with pass rates of 56.1% vs 37.9%.

Recommended modelMiMo-V2.5-ProIts score stays close to the best score here (5.5 vs 6.1), while costing about 1.7x less than GPT-5 Nano (medium).

Last updated at: 2026-07-21

Metric GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07 MiMo-V2.5-Pro MiMo-V2.5-Pro none Release: 2026-04-22
Score 6.1 5.5
Rank #134 #160
Reliability 10.0 10.0
Consistency 7.0 8.6
Tests Correct
Attempt pass rate 56.1% 37.9%
Flaky tests 8 4
Total Runs 66 66
Cost per result 1.267 1.509
Total Cost $0.114 $0.068
Input Price $0.050 / 1M $0.435 / 1M
Output Price $0.400 / 1M $0.870 / 1M
Total Input Tokens 94,935 124,799
Output Tokens 12,042 15,362
Reasoning Tokens 261,056 0
Response Time (avg) 54.87s 4.12s
Response Time (max) 227.89s 53.13s
Response Time (total) 822.99s 90.55s

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#134 GPT-5 Nano

medium
Cost
$0.006
Time
108.5s
Tokens
13,209 tok

#160 MiMo-V2.5-Pro

none
Cost
$0.004
Time
46.4s
Tokens
4,025 tok

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Category Breakdown

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5 Nano 7.0 7.7 55.6% 1 41.62s 7,305 740 41,152
MiMo-V2.5-Pro 4.3 7.8 22.2% 1 1.41s 6,559 485 0

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