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Claude Opus 5 vs OpenAI: GPT-5.5

Claude Opus 5 (high) leads on average score with 9.2 vs 9.0. Claude Opus 5 (high) has the lower benchmark cost at $2.835 vs $4.137. Claude Opus 5 (high) is faster at 20.44s vs 38.42s, with pass rates of 84.9% vs 87.9%.

Recommended modelClaude Opus 5 (high)It has the best score here (9.2), while responding about 1.9x faster than GPT-5.5 (medium).

Last updated at: 2026-07-25

Metric Claude Opus 5 Claude Opus 5 high Release: 2026-07-25 GPT-5.5 GPT-5.5 medium Release: 2026-04-24
Score 9.2 9.0
Rank #11 #15
Reliability 10.0 10.0
Consistency 9.6 8.9
Tests Correct
Attempt pass rate 84.9% 87.9%
Flaky tests 1 3
Total Runs 66 66
Cost per result 15.747 22.980
Total Cost $2.835 $4.137
Input Price $5.000 / 1M $5.000 / 1M
Output Price $25.000 / 1M $30.000 / 1M
Total Input Tokens 135,959 80,659
Output Tokens 67,066 5,617
Reasoning Tokens 19,114 118,819
Response Time (avg) 20.44s 38.42s
Response Time (max) 159.01s 332.10s
Response Time (total) 449.68s 845.35s

Hamster playing table tennis

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

#11 Claude Opus 5

high
Cost
$0.265
Time
144.5s
Tokens
10,741 tok

#15 GPT-5.5

medium
Cost
$0.112
Time
71.9s
Tokens
3,807 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 10.0 10.0 100.0% 0 12.73s 10,590 7,547 1,721
GPT-5.5 8.8 7.8 88.9% 1 59.77s 7,305 362 24,959

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