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Claude Haiku 5.5 (xhigh) vs Pareto 26.9 (default)

Claude Haiku 5.5 (xhigh) leads on average score with 9.1 vs 8.9. Claude Haiku 5.5 (xhigh) has the lower benchmark cost at $0.140 vs $1.864. Claude Haiku 5.5 (xhigh) is faster at 16.58s vs 28.26s, with pass rates of 81.2% vs 79.7%.

Last updated at: 2026-10-15

Compared models

Rank
#37
Total Output Tokens
199,268
Response Time (avg)
16.58s
Total Cost
$0.140
Rank
#55
Total Output Tokens
175,696
Response Time (avg)
28.26s
Total Cost
$1.864
Recommended model Claude Haiku 5.5 (xhigh)

It has the best score here (9.1), while costing about 13.4x less than Pareto 26.9 (default).

Detailed comparison

Metric Claude Haiku 5.5 Claude Haiku 5.5 xhigh Release: 2026-10-07 Pareto 26.9 Pareto 26.9 default Release: 2026-10-15
Score 9.1 8.9
Rank #37 #55
Reliability 10.0 10.0
Consistency 9.3 8.1
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 81.2% 79.7%
Flaky tests 2 6
Total Runs 69 69
Cost per result 0.773 12.422
Total Cost $0.140 $1.864
Input Price $0.100 / 1M $2.500 / 1M
Output Price $0.500 / 1M $7.500 / 1M
Cache Read Price $0.010 / 1M $0.250 / 1M
Cache Write Price $0.125 / 1M N/A
Total Input Tokens 394,509 218,199
Output Tokens 10,349 175,696
Reasoning Tokens 188,919 0
Response Time (avg) 16.58s 28.26s
Response Time (max) 92.74s 151.76s
Response Time (total) 381.40s 649.90s
Parameters ~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.

#37 Claude Haiku 5.5

xhigh
Cost
$0.021
Time
189.0s
Tokens
41,343 tok

#55 Pareto 26.9

default
Cost
$0.038
Time
109.6s
Tokens
5,118 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 Haiku 5.5 10.0 10.0 100.0% 0 13.13s 10,608 504 26,396
Pareto 26.9 10.0 10.0 100.0% 0 49.15s 7,419 1,895 0

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