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Anthropic: Claude Opus 4.8 vs Google: Gemini 3.5 Flash

Last updated at: 2026-05-28

Metric Claude Opus 4.8 Claude Opus 4.8 none Release: 2026-05-28 Gemini 3.5 Flash Gemini 3.5 Flash low Release: 2026-05-19
Score 7.3 9.3
Rank #63 #3
Reliability 10.0 10.0
Consistency 9.2 10.0
Tests Correct
Attempt pass rate 65.0% 90.0%
Flaky tests 2 0
Total Runs 60 60
Cost per result 4.324 1.582
Total Cost $0.519 $0.285
Input Price $5.000 / 1M $1.500 / 1M
Output Price $25.000 / 1M $9.000 / 1M
Output Tokens 8,098 2,027
Reasoning Tokens 0 23,938
Response Time (avg) 3.51s 2.98s
Response Time (max) 17.73s 6.44s
Response Time (total) 70.19s 59.59s

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 3.5 Flash 10.0 10.0 100.0% 0 2.52s 209 2,536
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 3.5 Flash 6.8 10.0 50.0% 0 5.54s 452 6,839
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 3.5 Flash 10.0 10.0 100.0% 0 6.44s 351 3,050
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 3.5 Flash 10.0 10.0 100.0% 0 1.81s 279 1,164
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 3.5 Flash 7.7 10.0 66.7% 0 3.39s 12 4,538
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 3.5 Flash 10.0 10.0 100.0% 0 2.27s 119 916
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 3.5 Flash 9.9 10.0 100.0% 0 1.86s 71 1,652
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 3.5 Flash 10.0 10.0 100.0% 0 2.35s 288 2,150
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 3.5 Flash 10.0 10.0 100.0% 0 3.27s 234 403
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 3.5 Flash 10.0 10.0 100.0% 0 1.88s 12 690

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