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Claude Sonnet 5.5 (medium) vs Kimi K2.6

Claude Sonnet 5.5 (medium) leads on average score with 5.7 vs 5.7. Kimi K2.6 has the lower benchmark cost at $0.180 vs $0.672. Claude Sonnet 5.5 (medium) is faster at 6.07s vs 19.57s, with pass rates of 37.9% vs 30.3%.

Last updated at: 2026-09-29

Compared models

Rank
#266
Total Output Tokens
32,980
Response Time (avg)
6.07s
Total Cost
$0.672
Rank
#272
Total Output Tokens
30,249
Response Time (avg)
19.57s
Total Cost
$0.180
Recommended model Kimi K2.6

Its score stays close to the best score here (5.7 vs 5.7), while costing about 3.7x less than Claude Sonnet 5.5 (medium).

Detailed comparison

Metric Claude Sonnet 5.5 Claude Sonnet 5.5 medium Release: 2026-09-29 Kimi K2.6 Kimi K2.6 none Release: 2026-04-20
Score 5.7 5.7
Rank #266 #272
Reliability 10.0 10.0
Consistency 9.7 9.3
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 37.9% 30.3%
Flaky tests 1 2
Total Runs 66 66
Cost per result 8.392 3.732
Total Cost $0.672 $0.180
Input Price $2.000 / 1M $0.650 / 1M
Output Price $10.000 / 1M $3.410 / 1M
Total Input Tokens 170,771 116,983
Output Tokens 23,185 30,249
Reasoning Tokens 9,795 0
Response Time (avg) 6.07s 19.57s
Response Time (max) 26.16s 238.89s
Response Time (total) 133.62s 430.58s
Parameters ~1T total (~100B active) 1T total (32B active)
Availability Closed Weights available

Model generation showcase

Hamster playing table tennis

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

#266 Claude Sonnet 5.5

medium
Cost
$0.024
Time
17.4s
Tokens
2,525 tok

#272 MoonshotAI: Kimi K2.6

none
Cost
$0.020
Time
127.4s
Tokens
4,429 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
Claude Sonnet 5.5 3.4 9.7 0.0% 0 6.07s 10,608 6,767 0
Kimi K2.6 5.5 9.8 33.3% 0 82.57s 5,986 14,754 0

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