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Anthropic: Claude Opus 4.8 vs Google: Gemini 3 Flash Preview

Last updated at: 2026-05-28

Metric Claude Opus 4.8 Claude Opus 4.8 medium Release: 2026-05-28 Gemini 3 Flash Preview Gemini 3 Flash Preview medium Release: 2025-12-17
Score 8.7 9.8
Rank #12 #1
Reliability 10.0 10.0
Consistency 9.6 9.6
Tests Correct
Attempt pass rate 83.3% 98.3%
Flaky tests 1 1
Total Runs 60 60
Cost per result 6.285 2.980
Total Cost $1.006 $0.567
Input Price $5.000 / 1M $0.500 / 1M
Output Price $25.000 / 1M $3.000 / 1M
Output Tokens 23,201 2,000
Reasoning Tokens 5,901 181,033
Response Time (avg) 9.34s 16.50s
Response Time (max) 38.03s 117.26s
Response Time (total) 186.84s 330.06s

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 10.0 10.0 100.0% 0 3.95s 1,179 478
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 3.88s 330 3,216
Coding 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 14.97s 6,651 1,381
Gemini 3 Flash Preview 7.9 6.4 83.3% 1 95.96s 456 127,964
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 9.8 10.0 100.0% 0 38.03s 5,260 1,588
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 22.42s 351 10,485
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 7.1 5.6 83.3% 1 12.29s 481 312
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.43s 279 4,893
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Opus 4.8 5.3 10.0 33.3% 0 14.15s 7,477 900
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 15.27s 12 21,684
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 2.46s 237 0
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.19s 72 1,905
Instructions following 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 3.32s 373 320
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.04s 72 2,709
Puzzle Solving 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 3.95s 791 483
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.05s 183 4,365
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 8.96s 301 225
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 12.60s 234 1,487
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 6.14s 451 214
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.50s 11 2,325

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