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Anthropic: Claude Opus 4.8 vs OpenAI: GPT-5 Mini

Last updated at: 2026-05-28

Metric Claude Opus 4.8 Claude Opus 4.8 none Release: 2026-05-28 GPT-5 Mini GPT-5 Mini medium Release: 2025-08-07
Score 7.3 7.2
Rank #63 #70
Reliability 10.0 10.0
Consistency 9.2 9.1
Tests Correct
Attempt pass rate 65.0% 61.7%
Flaky tests 2 2
Total Runs 60 60
Cost per result 4.324 1.348
Total Cost $0.519 $0.149
Input Price $5.000 / 1M $0.250 / 1M
Output Price $25.000 / 1M $2.000 / 1M
Output Tokens 8,098 6,723
Reasoning Tokens 0 63,082
Response Time (avg) 3.51s 23.75s
Response Time (max) 17.73s 88.15s
Response Time (total) 70.19s 475.03s

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

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 6.5 10.0 50.0% 0 3.40s 1,472 0
GPT-5 Mini 7.1 7.6 66.7% 1 13.86s 1,715 6,378
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 6.8 10.0 50.0% 0 3.59s 1,323 0
GPT-5 Mini 10.0 10.0 100.0% 0 30.74s 580 12,544
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 9.5 10.0 100.0% 0 17.73s 3,259 0
GPT-5 Mini 10.0 10.0 100.0% 0 88.15s 754 11,520
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 7.3 5.8 83.3% 1 1.77s 308 0
GPT-5 Mini 10.0 10.0 100.0% 0 12.58s 453 3,200
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 5.3 7.2 44.4% 1 1.66s 61 0
GPT-5 Mini 3.6 7.2 22.2% 1 44.63s 293 14,016
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 3.48s 230 0
GPT-5 Mini 4.5 10.0 0.0% 0 13.50s 349 1,856
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 9.9 10.0 100.0% 0 1.37s 95 0
GPT-5 Mini 10.0 10.0 100.0% 0 11.59s 310 3,968
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 7.7 10.0 66.7% 0 2.74s 783 0
GPT-5 Mini 5.6 9.8 33.3% 0 15.20s 1,622 6,144
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 5.35s 355 0
GPT-5 Mini 10.0 10.0 100.0% 0 18.64s 487 1,600
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 3.0 10.0 0.0% 0 3.41s 212 0
GPT-5 Mini 3.0 10.0 0.0% 0 9.99s 160 1,856

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