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Claude Opus 5 (low) vs Pareto (default)

Pareto (default) leads on average score with 9.1 vs 9.0. Pareto (default) has the lower benchmark cost at $1.520 vs $2.350. Claude Opus 5 (low) is faster at 9.87s vs 33.47s, with pass rates of 84.1% vs 87.0%.

Last updated at: 2026-10-19

Compared models

Rank
#51
Total Output Tokens
23,416
Response Time (avg)
9.87s
Total Cost
$2.350
Rank
#42
Total Output Tokens
128,144
Response Time (avg)
33.47s
Total Cost
$1.520
Recommended model Claude Opus 5 (low)

Its score stays close to the best score here (9.0 vs 9.1), while responding about 3.4x faster than Pareto (default).

Detailed comparison

Metric Claude Opus 5 Claude Opus 5 low Release: 2026-07-25 Pareto Pareto default Release: 2026-09-18
Score 9.0 9.1
Rank #51 #42
Reliability 10.0 10.0
Consistency 9.7 9.2
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 84.1% 87.0%
Flaky tests 1 2
Total Runs 69 69
Cost per result 12.367 8.000
Total Cost $2.350 $1.520
Input Price $5.000 / 1M $2.500 / 1M
Output Price $25.000 / 1M $7.500 / 1M
Cache Read Price $0.500 / 1M $0.250 / 1M
Cache Write Price $6.250 / 1M N/A
Total Input Tokens 352,845 223,559
Output Tokens 16,553 128,144
Reasoning Tokens 7,007 0
Response Time (avg) 9.87s 33.47s
Response Time (max) 73.15s 143.33s
Response Time (total) 226.95s 769.84s
Parameters ~5T total (~500B active) -
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.

#51 Claude Opus 5

low
Cost
$0.062
Time
30.2s
Tokens
2,615 tok

#42 Pareto

default
Cost
$0.034
Time
170.7s
Tokens
4,581 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 Opus 5 7.8 7.4 77.8% 1 6.70s 10,590 2,442 760
Pareto 10.0 10.0 100.0% 0 50.12s 7,471 1,949 0

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