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Anthropic: Claude Opus 4.6 vs Google: Gemini 3 Flash Preview

Summary

Claude Opus 4.6 vs Gemini 3 Flash Preview benchmark comparison: Gemini 3 Flash Preview leads on average score with 9.6 vs 7.7. Gemini 3 Flash Preview has the lower benchmark cost at $0.667 vs $2.053. Gemini 3 Flash Preview is faster at 18.64s vs 25.89s, with pass rates of 61.9% vs 98.4%.

Recommended model: Gemini 3 Flash Preview - It has the best score here (9.6), while costing about 3.1x less than Claude Opus 4.6.

Last updated at: 2026-07-02

Metric Claude Opus 4.6 Claude Opus 4.6 medium Release: 2026-02-05 Gemini 3 Flash Preview Gemini 3 Flash Preview medium Release: 2025-12-17
Score 7.7 9.6
Rank #40 #2
Reliability 10.0 10.0
Consistency 8.8 9.7
Tests Correct
Attempt pass rate 61.9% 98.4%
Flaky tests 3 1
Total Runs 63 63
Cost per result 17.103 3.335
Total Cost $2.053 $0.667
Input Price $5.000 / 1M $0.500 / 1M
Output Price $25.000 / 1M $3.000 / 1M
Total Input Tokens 53,227 37,017
Output Tokens 47,446 2,006
Reasoning Tokens 24,000 214,153
Response Time (avg) 25.89s 18.64s
Response Time (max) 83.40s 117.26s
Response Time (total) 362.49s 391.35s

Generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#40 Claude Opus 4.6

medium
Invalid SVG
Cost
$0.000
Time
300.0s
Tokens
0 tok

#2 Gemini 3 Flash Preview

medium
Cost
$0.010
Time
17.9s
Tokens
3,236 tok

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) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.6 6.4 5.8 66.7% 2 7.45s 840 986 1,071
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 3.88s 494 330 3,216
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.6 5.7 7.1 44.4% 1 30.10s 8,522 13,057 4,121
Gemini 3 Flash Preview 8.6 7.6 88.9% 1 84.40s 8,122 462 161,084
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.6 10.0 10.0 100.0% 0 76.66s 20,685 8,178 5,194
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 22.42s 12,873 351 10,485
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.6 10.0 10.0 100.0% 0 7.37s 8,676 691 757
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.43s 7,548 279 4,893
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.6 3.0 10.0 0.0% 0 83.40s 674 14,642 8,687
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 15.27s 633 12 21,684
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.6 10.0 10.0 100.0% 0 5.04s 564 188 292
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.19s 486 72 1,905
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.6 10.0 10.0 100.0% 0 2.43s 792 266 467
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.04s 615 72 2,709
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.6 7.7 10.0 66.7% 0 4.71s 816 532 630
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.05s 558 183 4,365
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.6 10.0 10.0 100.0% 0 9.73s 11,454 861 329
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 12.60s 5,532 234 1,487
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.6 3.0 10.0 0.0% 0 63.24s 204 8,045 2,452
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.50s 156 11 2,325

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