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MoonshotAI: Kimi K2.6 vs StepFun: Step 3.5 Flash

Step 3.5 Flash (medium) leads on average score with 6.0 vs 5.8. Step 3.5 Flash (medium) has the lower benchmark cost at $0.108 vs $0.233. Kimi K2.6 is faster at 19.58s vs 174.22s, with pass rates of 34.9% vs 51.5%.

Recommended modelKimi K2.6Its score stays close to the best score here (5.8 vs 6.0), while responding about 8.9x faster than Step 3.5 Flash (medium).

Last updated at: 2026-07-17

Metric Kimi K2.6 Kimi K2.6 none Release: 2026-04-20 Step 3.5 Flash Step 3.5 Flash medium Release: 2026-02-01
Score 5.8 6.0
Rank #131 #123
Reliability 10.0 9.2
Consistency 9.3 9.0
Tests Correct
Attempt pass rate 34.9% 51.5%
Flaky tests 2 1
Total Runs 66 63
Cost per result 3.199 0.540
Total Cost $0.233 $0.108
Input Price $0.950 / 1M $0.100 / 1M
Output Price $4.000 / 1M $0.300 / 1M
Total Input Tokens 116,970 65,707
Output Tokens 30,253 108,561
Reasoning Tokens 0 293,993
Response Time (avg) 19.58s 174.22s
Response Time (max) 238.89s 1597.85s
Response Time (total) 430.85s 2613.32s

Hamster playing table tennis

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

#131 MoonshotAI: Kimi K2.6

none
Cost
$0.020
Time
127.4s
Tokens
4,429 tok

#123 Step 3.5 Flash

medium
Cost
$0.008
Time
277.1s
Tokens
23,695 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 K2.6 5.5 9.8 33.3% 0 82.57s 5,986 14,754 0
Step 3.5 Flash 2.4 5.2 0.0% 0 258.38s 2,211 13,207 22,429

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