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MoonshotAI: Kimi K2.5 vs OpenAI: GPT-5 Nano

Model Name:

Last updated at : 2026-02-27 15:16

Summary

Metric MoonshotAI: Kimi K2.5 none Release: Unknown release date OpenAI: GPT-5 Nano medium Release: Unknown release date
Rank #32 #23
Score 4.07 5.86
Consistency 8.92 6.60
Cost per result 0.232 0.519
Total Cost $0.010 $0.037
Tests Correct
Wrong Tests 10 7
Attempt pass rate 35.7% 69.1%
Flaky tests 2 6
Output Tokens 1,915 3,700
Reasoning Tokens 0 85,184

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
MoonshotAI: Kimi K2.5 2.67 7.86 11.1% 1 363 0
OpenAI: GPT-5 Nano 7.00 9.99 66.7% 0 1,107 19,968
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
MoonshotAI: Kimi K2.5 5.50 5.81 83.3% 1 995 0
OpenAI: GPT-5 Nano 5.50 5.81 83.3% 1 426 8,576
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
MoonshotAI: Kimi K2.5 4.00 10.00 33.3% 0 29 0
OpenAI: GPT-5 Nano 4.00 4.41 55.6% 2 195 33,600
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
MoonshotAI: Kimi K2.5 5.00 9.99 50.0% 0 61 0
OpenAI: GPT-5 Nano 7.00 6.41 83.3% 1 360 4,032
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
MoonshotAI: Kimi K2.5 2.00 9.92 0.0% 0 247 0
OpenAI: GPT-5 Nano 4.67 4.90 55.6% 2 1,054 12,032
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
MoonshotAI: Kimi K2.5 10.00 10.00 100.0% 0 220 0
OpenAI: GPT-5 Nano 10.00 10.00 100.0% 0 558 6,976

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