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Claude Fable 5.1 (low) vs Kimi K2.5 (medium)

The average score is effectively tied at 6.9 vs 7.0. Kimi K2.5 (medium) has the lower benchmark cost at $0.479 vs $2.565. Claude Fable 5.1 (low) is faster at 10.33s vs 98.19s, with pass rates of 56.1% vs 63.6%.

Last updated at: 2026-09-02

Rank
#130
Total Output Tokens
24,375
Response Time (avg)
10.33s
Total Cost
$2.565
Rank
#128
Total Output Tokens
220,942
Response Time (avg)
98.19s
Total Cost
$0.479
Recommended model Kimi K2.5 (medium)

It has the best score here (7.0), while costing about 5.4x less than Claude Fable 5.1 (low).

Detailed comparison

Metric Claude Fable 5.1 Claude Fable 5.1 low Release: 2026-09-02 Kimi K2.5 Kimi K2.5 medium Release: 2026-01-27
Score 6.9 7.0
Rank #130 #128
Reliability 10.0 10.0
Consistency 9.2 7.0
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 56.1% 63.6%
Flaky tests 2 8
Total Runs 66 66
Cost per result 23.315 4.849
Total Cost $2.565 $0.479
Input Price $10.000 / 1M $0.450 / 1M
Output Price $50.000 / 1M $2.250 / 1M
Total Input Tokens 134,582 118,496
Output Tokens 8,955 53,522
Reasoning Tokens 15,420 167,420
Response Time (avg) 10.33s 98.19s
Response Time (max) 33.10s 281.00s
Response Time (total) 227.37s 1571.05s
Parameters ~9.5T total (~878B 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.

#130 Claude Fable 5.1

low
Cost
$0.126
Time
28.5s
Tokens
2,652 tok

#128 MoonshotAI: Kimi K2.5

medium
Cost
$0.030
Time
58.6s
Tokens
8,683 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 Fable 5.1 3.4 10.0 0.0% 0 6.75s 10,608 1,753 0
Kimi K2.5 6.1 4.6 66.7% 2 217.49s 6,935 5,705 74,693

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