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

The average score is effectively tied at 8.3 vs 8.3. Kimi K3 (max) has the lower benchmark cost at $3.409 vs $3.490. Claude Opus 4.8 (medium) is faster at 16.72s vs 139.41s, with pass rates of 82.6% vs 78.3%.

Last updated at: 2026-10-26

Compared models

Rank
#104
Total Output Tokens
67,522
Response Time (avg)
16.72s
Total Cost
$3.490
Rank
#102
Total Output Tokens
233,327
Response Time (avg)
139.41s
Total Cost
$3.409
Recommended model Claude Opus 4.8 (medium)

It has the best score here (8.3), while responding about 8.3x faster 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 8.3 8.3
Rank #104 #102
Reliability 10.0 9.3
Consistency 9.0 9.3
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 82.6% 78.3%
Flaky tests 3 2
Total Runs 69 69
Cost per result 20.527 23.601
Total Cost $3.490 $3.409
Input Price $5.000 / 1M $0.830 / 1M
Output Price $25.000 / 1M $14.000 / 1M
Cache Read Price $0.500 / 1M $0.270 / 1M
Cache Write Price $6.250 / 1M N/A
Total Input Tokens 360,294 170,700
Output Tokens 43,441 7,719
Reasoning Tokens 24,401 225,608
Response Time (avg) 16.72s 139.41s
Response Time (max) 99.37s 766.58s
Response Time (total) 384.66s 2788.26s
Parameters ~5T total (~500B active) 2.8T total (104B active)
Availability Closed Weights available

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Model generation showcase

Hamster playing table tennis

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

#104 Claude Opus 4.8

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

#102 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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