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Anthropic: Claude Opus 4.8 vs Google: Gemini 2.5 Flash

Last updated at: 2026-06-01

Metric Claude Opus 4.8 Claude Opus 4.8 none Release: 2026-05-28 Gemini 2.5 Flash Gemini 2.5 Flash medium Release: 2025-06-17
Score 7.3 7.7
Rank #66 #40
Reliability 10.0 10.0
Consistency 9.2 9.6
Tests Correct
Attempt pass rate 65.0% 68.3%
Flaky tests 2 1
Total Runs 60 60
Cost per result 4.324 2.750
Total Cost $0.519 $0.358
Input Price $5.000 / 1M $0.300 / 1M
Output Price $25.000 / 1M $2.500 / 1M
Output Tokens 8,098 1,924
Reasoning Tokens 0 137,255
Response Time (avg) 3.51s 15.57s
Response Time (max) 17.73s 95.48s
Response Time (total) 70.19s 311.47s

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
Gemini 2.5 Flash 8.4 10.0 75.0% 0 6.30s 255 10,233
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
Gemini 2.5 Flash 6.6 10.0 50.0% 0 54.56s 537 24,413
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
Gemini 2.5 Flash 10.0 10.0 100.0% 0 28.44s 303 11,922
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
Gemini 2.5 Flash 10.0 10.0 100.0% 0 4.06s 279 2,325
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
Gemini 2.5 Flash 5.9 7.2 55.6% 1 37.34s 18 80,702
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
Gemini 2.5 Flash 4.8 10.0 0.0% 0 4.86s 92 1,899
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
Gemini 2.5 Flash 9.8 10.0 100.0% 0 2.62s 69 1,203
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
Gemini 2.5 Flash 7.7 10.0 66.7% 0 3.18s 126 2,499
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
Gemini 2.5 Flash 10.0 10.0 100.0% 0 6.20s 234 1,140
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
Gemini 2.5 Flash 3.0 10.0 0.0% 0 2.76s 11 919

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