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Claude Opus 4.8 (medium) vs Kimi K3 (max)

Claude Opus 4.8 (medium) leads on average score with 8.8 vs 7.9. Claude Opus 4.8 (medium) has the lower benchmark cost at $1.983 vs $3.467. Claude Opus 4.8 (medium) is faster at 12.97s vs 142.84s, with pass rates of 83.3% vs 77.3%.

Last updated at: 2026-09-10

Compared models

Rank
#39
Total Output Tokens
51,927
Response Time (avg)
12.97s
Total Cost
$1.983
Rank
#78
Total Output Tokens
224,128
Response Time (avg)
142.84s
Total Cost
$3.467
Recommended model Claude Opus 4.8 (medium)

It has the best score here (8.8), while costing about 1.7x less than Kimi K3 (max).

Detailed comparison

Metric Claude Opus 4.8 Claude Opus 4.8 medium Release: 2026-05-28 Kimi K3 Kimi K3 max Release: 2026-07-16
Score 8.8 7.9
Rank #39 #78
Reliability 10.0 9.0
Consistency 9.2 9.2
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 83.3% 77.3%
Flaky tests 2 2
Total Runs 66 66
Cost per result 11.662 21.668
Total Cost $1.983 $3.467
Input Price $5.000 / 1M $3.000 / 1M
Output Price $25.000 / 1M $15.000 / 1M
Total Input Tokens 138,448 34,960
Output Tokens 40,765 2,887
Reasoning Tokens 11,162 221,241
Response Time (avg) 12.97s 142.84s
Response Time (max) 70.54s 766.58s
Response Time (total) 285.29s 2714.02s
Parameters ~5T total (~500B active) 2.8T total (104B active)
Availability Closed Weights available

Model generation showcase

Hamster playing table tennis

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

#39 Claude Opus 4.8

medium
Cost
$0.057
Time
23.1s
Tokens
2,412 tok

#78 MoonshotAI: Kimi K3

max
Cost
$0.281
Time
506.9s
Tokens
18,863 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 Opus 4.8 10.0 10.0 100.0% 0 15.33s 10,590 9,945 1,381
Kimi K3 10.0 10.0 100.0% 0 325.79s 8,061 460 84,012

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