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Claude Fable 5.1 (high) vs GPT-5.4 Mini (medium)

The average score is effectively tied at 7.9 vs 7.9. GPT-5.4 Mini (medium) has the lower benchmark cost at $1.008 vs $3.471. Claude Fable 5.1 (high) is faster at 13.30s vs 29.94s, with pass rates of 85.5% vs 69.6%.

Last updated at: 2026-10-01

Compared models

Rank
#98
Total Output Tokens
40,466
Response Time (avg)
13.30s
Total Cost
$3.471
Rank
#99
Total Output Tokens
184,172
Response Time (avg)
29.94s
Total Cost
$1.008
Recommended model Claude Fable 5.1 (high)

It has the best score here (7.9), while responding about 2.3x faster than GPT-5.4 Mini (medium).

Detailed comparison

Metric Claude Fable 5.1 Claude Fable 5.1 high Release: 2026-09-02 GPT-5.4 Mini GPT-5.4 Mini medium Release: 2026-03-17
Score 7.9 7.9
Rank #98 #99
Reliability 10.0 10.0
Consistency 9.7 8.2
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 85.5% 69.6%
Flaky tests 1 5
Total Runs 69 69
Cost per result 18.264 7.754
Total Cost $3.471 $1.008
Input Price $10.000 / 1M $0.750 / 1M
Output Price $50.000 / 1M $4.500 / 1M
Total Input Tokens 144,676 238,925
Output Tokens 8,184 7,109
Reasoning Tokens 32,282 177,063
Response Time (avg) 13.30s 29.94s
Response Time (max) 40.17s 138.75s
Response Time (total) 305.83s 688.57s
Parameters ~9.5T total (~878B active) ~400B total (~17B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#98 Claude Fable 5.1

high
Cost
$0.384
Time
102.5s
Tokens
7,824 tok

#99 GPT-5.4 Mini

medium
Cost
$0.056
Time
95.5s
Tokens
12,464 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 8.4 7.4 88.9% 1 13.91s 10,608 520 6,503
GPT-5.4 Mini 8.4 7.4 88.9% 1 57.87s 7,305 467 40,902

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