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Claude Opus 5 vs OpenAI: GPT-5.5

Claude Opus 5 (medium) leads on average score with 9.2 vs 9.0. Claude Opus 5 (medium) has the lower benchmark cost at $1.486 vs $4.137. Claude Opus 5 (medium) is faster at 9.38s vs 38.42s, with pass rates of 83.3% vs 87.9%.

Recommended modelClaude Opus 5 (medium)It has the best score here (9.2), while costing about 2.8x less than GPT-5.5 (medium).

Last updated at: 2026-07-25

Metric Claude Opus 5 Claude Opus 5 medium Release: 2026-07-25 GPT-5.5 GPT-5.5 medium Release: 2026-04-24
Score 9.2 9.0
Rank #12 #15
Reliability 10.0 10.0
Consistency 9.6 8.9
Tests Correct
Attempt pass rate 83.3% 87.9%
Flaky tests 1 3
Total Runs 66 66
Cost per result 8.253 22.980
Total Cost $1.486 $4.137
Input Price $5.000 / 1M $5.000 / 1M
Output Price $25.000 / 1M $30.000 / 1M
Total Input Tokens 135,607 80,659
Output Tokens 25,673 5,617
Reasoning Tokens 6,930 118,819
Response Time (avg) 9.38s 38.42s
Response Time (max) 35.05s 332.10s
Response Time (total) 206.26s 845.35s

Hamster playing table tennis

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

#12 Claude Opus 5

medium
Cost
$0.125
Time
69.3s
Tokens
5,134 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 9.56s 10,590 5,224 1,162
GPT-5.5 8.8 7.8 88.9% 1 59.77s 7,305 362 24,959

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