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Anthropic: Claude Opus 4.8 vs Google: Gemini 3.1 Pro Preview

Last updated at: 2026-05-28

Metric Claude Opus 4.8 Claude Opus 4.8 medium Release: 2026-05-28 Gemini 3.1 Pro Preview Gemini 3.1 Pro Preview medium Release: 2026-02-19
Score 8.7 9.3
Rank #12 #4
Reliability 10.0 10.0
Consistency 9.6 10.0
Tests Correct
Attempt pass rate 83.3% 90.0%
Flaky tests 1 0
Total Runs 60 60
Cost per result 6.285 5.587
Total Cost $1.006 $1.006
Input Price $5.000 / 1M $2.000 / 1M
Output Price $25.000 / 1M $12.000 / 1M
Output Tokens 23,201 1,971
Reasoning Tokens 5,901 75,384
Response Time (avg) 9.34s 20.77s
Response Time (max) 38.03s 88.68s
Response Time (total) 186.84s 269.96s

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 3.1 Pro Preview 10.0 10.0 100.0% 0 7.90s 112 3,218
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 3.1 Pro Preview 7.0 9.8 50.0% 0 54.28s 429 37,735
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 3.1 Pro Preview 9.5 10.0 100.0% 0 40.61s 432 9,281
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 3.1 Pro Preview 10.0 10.0 100.0% 0 7.72s 279 3,904
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 3.1 Pro Preview 7.7 10.0 66.7% 0 32.73s 18 12,424
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 3.1 Pro Preview 10.0 10.0 100.0% 0 11.77s 108 1,179
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 3.1 Pro Preview 10.0 10.0 100.0% 0 9.56s 72 2,236
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 3.1 Pro Preview 10.0 10.0 100.0% 0 6.90s 235 3,128
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 3.1 Pro Preview 10.0 10.0 100.0% 0 23.15s 274 982
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 3.1 Pro Preview 10.0 10.0 100.0% 0 6.27s 12 1,297

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