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

Claude Haiku 5.5 (low) leads on average score with 8.6 vs 7.9. Claude Haiku 5.5 (low) has the lower benchmark cost at $0.061 vs $3.471. Claude Haiku 5.5 (low) is faster at 7.51s vs 13.30s, with pass rates of 85.5% vs 76.8%.

Last updated at: 2026-10-16

Compared models

Rank
#116
Total Output Tokens
40,466
Response Time (avg)
13.30s
Total Cost
$3.471
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 57.4x less than Claude Fable 5.1 (high).

Detailed comparison

Metric Claude Fable 5.1 Claude Fable 5.1 high Release: 2026-09-02 Claude Haiku 5.5 Claude Haiku 5.5 low Release: 2026-10-07
Score 7.9 8.6
Rank #116 #74
Reliability 10.0 10.0
Consistency 9.7 8.9
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 85.5% 76.8%
Flaky tests 1 3
Total Runs 69 69
Cost per result 18.264 0.378
Total Cost $3.471 $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 144,676 296,301
Output Tokens 8,184 10,672
Reasoning Tokens 32,282 50,978
Response Time (avg) 13.30s 7.51s
Response Time (max) 40.17s 44.43s
Response Time (total) 305.83s 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.

#116 Claude Fable 5.1

high
Cost
$0.384
Time
102.5s
Tokens
7,824 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 8.4 7.4 88.9% 1 13.91s 10,608 520 6,503
Claude Haiku 5.5 7.9 7.5 77.8% 1 7.30s 10,608 531 11,618

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