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Claude Fable 5.1 (low) vs Claude Haiku 5.5 (low)

Claude Haiku 5.5 (low) leads on average score with 8.6 vs 6.2. Claude Haiku 5.5 (low) has the lower benchmark cost at $0.061 vs $3.395. Claude Haiku 5.5 (low) is faster at 7.51s vs 11.40s, with pass rates of 55.1% vs 76.8%.

Last updated at: 2026-10-16

Compared models

Rank
#260
Total Output Tokens
26,073
Response Time (avg)
11.40s
Total Cost
$3.395
Rank
#74
Total Output Tokens
61,650
Response Time (avg)
7.51s
Total Cost
$0.061
Recommended model Claude Haiku 5.5 (low)

It has the best score here (8.6), while costing about 56.2x less than Claude Fable 5.1 (low).

Detailed comparison

Metric Claude Fable 5.1 Claude Fable 5.1 low Release: 2026-09-02 Claude Haiku 5.5 Claude Haiku 5.5 low Release: 2026-10-07
Score 6.2 8.6
Rank #260 #74
Reliability 10.0 10.0
Consistency 8.9 8.9
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 55.1% 76.8%
Flaky tests 3 3
Total Runs 69 69
Cost per result 30.862 0.378
Total Cost $3.395 $0.061
Input Price $10.000 / 1M $0.100 / 1M
Output Price $50.000 / 1M $0.500 / 1M
Cache Read Price $0.250 / 1M $0.010 / 1M
Cache Write Price $12.500 / 1M $0.125 / 1M
Total Input Tokens 209,116 296,301
Output Tokens 10,031 10,672
Reasoning Tokens 16,042 50,978
Response Time (avg) 11.40s 7.51s
Response Time (max) 34.77s 44.43s
Response Time (total) 262.14s 172.74s
Parameters ~9.5T total (~878B active) ~50B
Availability Closed Closed

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.

#260 Claude Fable 5.1

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

#74 Claude Haiku 5.5

low
Cost
$0.001
Time
7.4s
Tokens
1,851 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
Claude Haiku 5.5 7.9 7.5 77.8% 1 7.30s 10,608 531 11,618

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