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Anthropic: Claude Opus 4.7 vs OpenAI: GPT-5.5

GPT-5.5 (low) leads on average score with 9.3 vs 8.7. GPT-5.5 (low) has the lower benchmark cost at $1.253 vs $1.477. Claude Opus 4.7 (medium) is faster at 7.61s vs 10.13s, with pass rates of 83.3% vs 86.4%.

Recommended modelGPT-5.5 (low)It has the strongest score in this comparison (9.3) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-07-25

Metric Claude Opus 4.7 Claude Opus 4.7 medium Release: 2026-04-16 GPT-5.5 GPT-5.5 low Release: 2026-04-24
Score 8.7 9.3
Rank #20 #9
Reliability 10.0 10.0
Consistency 9.6 10.0
Tests Correct
Attempt pass rate 83.3% 86.4%
Flaky tests 1 0
Total Runs 66 66
Cost per result 8.201 6.594
Total Cost $1.477 $1.253
Input Price $5.000 / 1M $5.000 / 1M
Output Price $25.000 / 1M $30.000 / 1M
Total Input Tokens 145,252 80,058
Output Tokens 24,948 5,378
Reasoning Tokens 5,042 23,040
Response Time (avg) 7.61s 10.13s
Response Time (max) 65.40s 56.19s
Response Time (total) 159.91s 222.82s

Hamster playing table tennis

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

#20 Claude Opus 4.7

medium
Cost
$0.059
Time
26.8s
Tokens
2,475 tok

#9 GPT-5.5

low
Cost
$0.068
Time
37.0s
Tokens
2,339 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 4.7 7.6 7.2 77.8% 1 12.96s 10,635 7,629 1,114
GPT-5.5 10.0 10.0 100.0% 0 15.04s 7,302 423 6,402

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