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MoonshotAI: Kimi K3 vs StepFun: Step 3.7 Flash

Summary

Kimi K3 (max) leads on average score with 8.5 vs 8.5. Step 3.7 Flash (medium) has the lower benchmark cost at $0.376 vs $3.112. Step 3.7 Flash (medium) is faster at 20.35s vs 122.48s, with pass rates of 82.5% vs 73.0%.

Recommended modelStep 3.7 Flash (medium)Its score stays close to the best score here (8.5 vs 8.5), while costing about 8.3x less than Kimi K3 (max).

Last updated at: 2026-07-16

Metric Kimi K3 Kimi K3 max Release: 2026-07-16 Step 3.7 Flash Step 3.7 Flash medium Release: 2026-05-29
Score 8.5 8.5
Rank #21 #26
Reliability 9.4 9.9
Consistency 9.2 9.3
Tests Correct
Attempt pass rate 82.5% 73.0%
Flaky tests 2 2
Total Runs 63 61
Cost per result 19.446 2.686
Total Cost $3.112 $0.376
Input Price $3.000 / 1M $0.200 / 1M
Output Price $15.000 / 1M $1.150 / 1M
Total Input Tokens 34,916 39,981
Output Tokens 2,910 319,958
Reasoning Tokens 197,529 0
Response Time (avg) 122.48s 20.35s
Response Time (max) 766.58s 113.98s
Response Time (total) 2327.06s 427.42s

Generation showcase

Hamster playing table tennis

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

#21 MoonshotAI: Kimi K3

max
Cost
$0.281
Time
506.9s
Tokens
18,863 tok

#26 Step 3.7 Flash

medium
Cost
$0.006
Time
46.2s
Tokens
4,466 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 K3 10.0 10.0 100.0% 0 325.79s 8,061 460 84,012
Step 3.7 Flash 8.8 7.8 88.9% 1 27.42s 7,437 44,797 0

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