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Claude Fable 5 (medium) vs GPT-5.5 (medium)

GPT-5.5 (medium) leads on average score with 9.0 vs 8.6. Claude Fable 5 (medium) has the lower benchmark cost at $3.478 vs $4.137. Claude Fable 5 (medium) is faster at 17.20s vs 38.42s, with pass rates of 78.8% vs 87.9%.

Last updated at: 2026-07-25

Rank
#22
Total Output Tokens
51,629
Response Time (avg)
17.20s
Total Cost
$3.478
Rank
#15
Total Output Tokens
124,436
Response Time (avg)
38.42s
Total Cost
$4.137
Recommended model Claude Fable 5 (medium)

Its score stays close to the best score here (8.6 vs 9.0), while responding about 2.2x faster than GPT-5.5 (medium).

Detailed comparison

Metric Claude Fable 5 Claude Fable 5 medium Release: 2026-06-10 GPT-5.5 GPT-5.5 medium Release: 2026-04-24
Score 8.6 9.0
Rank #22 #15
Reliability 10.0 10.0
Consistency 9.6 8.9
Tests Correct
Attempt pass rate 78.8% 87.9%
Flaky tests 1 3
Total Runs 66 66
Cost per result 20.459 22.980
Total Cost $3.478 $4.137
Input Price $10.000 / 1M $5.000 / 1M
Output Price $50.000 / 1M $30.000 / 1M
Total Input Tokens 89,643 80,659
Output Tokens 41,360 5,617
Reasoning Tokens 10,269 118,819
Response Time (avg) 17.20s 38.42s
Response Time (max) 80.80s 332.10s
Response Time (total) 378.41s 845.35s

Hamster playing table tennis

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

#22 Claude Fable 5

medium
Cost
$0.606
Time
156.7s
Tokens
12,264 tok

#15 GPT-5.5

medium
Cost
$0.112
Time
71.9s
Tokens
3,807 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 10.0 10.0 100.0% 0 15.59s 10,590 7,383 1,318
GPT-5.5 8.8 7.8 88.9% 1 59.77s 7,305 362 24,959

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