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MoonshotAI: Kimi K2.5 vs OpenAI: GPT-5.3 Chat

GPT-5.3 Chat leads on average score with 7.5 vs 7.0. GPT-5.3 Chat has the lower benchmark cost at $0.571 vs $0.600. GPT-5.3 Chat is faster at 6.88s vs 99.00s, with pass rates of 65.2% vs 68.2%.

Recommended modelGPT-5.3 ChatIt has the best score here (7.5), while responding about 14.4x faster than Kimi K2.5 (medium).

Last updated at: 2026-07-25

Metric Kimi K2.5 Kimi K2.5 medium Release: 2026-01-27 GPT-5.3 Chat GPT-5.3 Chat none Release: 2026-03-03
Score 7.0 7.5
Rank #85 #62
Reliability 10.0 10.0
Consistency 7.0 8.2
Tests Correct
Attempt pass rate 65.2% 68.2%
Flaky tests 8 5
Total Runs 66 66
Cost per result 4.789 4.387
Total Cost $0.600 $0.571
Input Price $0.571 / 1M $1.750 / 1M
Output Price $2.850 / 1M $14.000 / 1M
Total Input Tokens 118,448 78,990
Output Tokens 62,124 30,854
Reasoning Tokens 165,243 0
Response Time (avg) 99.00s 6.88s
Response Time (max) 281.00s 18.33s
Response Time (total) 1485.04s 151.31s

Hamster playing table tennis

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

#85 MoonshotAI: Kimi K2.5

medium
Cost
$0.030
Time
58.6s
Tokens
8,683 tok

#62 GPT-5.3 Chat

none
Cost
$0.008
Time
8.1s
Tokens
634 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
Kimi K2.5 6.1 4.6 66.7% 2 217.49s 6,935 5,705 74,693
GPT-5.3 Chat 5.6 4.7 55.6% 2 10.52s 7,302 6,632 0

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