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

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

Summary

Metric MoonshotAI: Kimi K2.5 medium Release: Unknown release date OpenAI: GPT-5 Nano medium Release: Unknown release date
Rank #17 #23
Score 6.29 5.86
Consistency 7.69 6.60
Cost per result 2.335 0.519
Total Cost $0.187 $0.037
Tests Correct
Wrong Tests 6 7
Attempt pass rate 73.8% 69.1%
Flaky tests 4 6
Output Tokens 30,504 3,700
Reasoning Tokens 58,467 85,184

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
MoonshotAI: Kimi K2.5 7.00 7.21 88.9% 1 335 6,255
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 10.00 10.00 100.0% 0 1,181 6,049
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 1.00 4.41 33.3% 2 20,696 30,894
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 9.50 10.00 100.0% 0 3,777 4,967
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 5.00 7.61 55.6% 1 4,273 9,490
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% 0 242 812
OpenAI: GPT-5 Nano 10.00 10.00 100.0% 0 558 6,976

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