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Claude Opus 5 vs OpenAI: GPT-5.3 Chat

The average score is effectively tied at 7.5 vs 7.5. GPT-5.3 Chat has the lower benchmark cost at $0.571 vs $1.550. GPT-5.3 Chat is faster at 6.88s vs 7.60s, with pass rates of 57.6% vs 68.2%.

Recommended modelGPT-5.3 ChatIt has the best score here (7.5), while costing about 2.7x less than Claude Opus 5.

Last updated at: 2026-07-25

Metric Claude Opus 5 Claude Opus 5 none Release: 2026-07-25 GPT-5.3 Chat GPT-5.3 Chat none Release: 2026-03-03
Score 7.5 7.5
Rank #59 #62
Reliability 10.0 10.0
Consistency 9.6 8.2
Tests Correct
Attempt pass rate 57.6% 68.2%
Flaky tests 1 5
Total Runs 66 66
Cost per result 12.912 4.387
Total Cost $1.550 $0.571
Input Price $5.000 / 1M $1.750 / 1M
Output Price $25.000 / 1M $14.000 / 1M
Total Input Tokens 185,550 78,990
Output Tokens 24,866 30,854
Reasoning Tokens 0 0
Response Time (avg) 7.60s 6.88s
Response Time (max) 47.72s 18.33s
Response Time (total) 167.28s 151.31s

Hamster playing table tennis

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

#59 Claude Opus 5

none
Cost
$0.271
Time
149.3s
Tokens
10,962 tok

#62 GPT-5.3 Chat

none
Cost
$0.008
Time
8.1s
Tokens
634 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 5.9 9.7 33.3% 0 5.54s 10,590 2,886 0
GPT-5.3 Chat 5.6 4.7 55.6% 2 10.52s 7,302 6,632 0

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