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

Summary

Claude Opus 4.8 vs Gemini 3 Flash Preview benchmark comparison: Gemini 3 Flash Preview leads on average score with 7.4 vs 7.2. Gemini 3 Flash Preview has the lower benchmark cost at $0.111 vs $0.539. Claude Opus 4.8 is faster at 3.47s vs 5.76s, with pass rates of 61.9% vs 79.4%.

Recommended model: Gemini 3 Flash Preview - It has the best score here (7.4), while costing about 4.9x less than Claude Opus 4.8.

Last updated at: 2026-06-12

Metric Claude Opus 4.8 Claude Opus 4.8 none Release: 2026-05-28 Gemini 3 Flash Preview Gemini 3 Flash Preview low Release: 2025-12-17
Score 7.2 7.4
Rank #59 #53
Reliability 10.0 10.0
Consistency 9.2 9.2
Tests Correct
Attempt pass rate 61.9% 79.4%
Flaky tests 2 2
Total Runs 63 63
Cost per result 4.485 0.689
Total Cost $0.539 $0.111
Input Price $5.000 / 1M $0.500 / 1M
Output Price $25.000 / 1M $3.000 / 1M
Total Input Tokens 67,104 36,769
Output Tokens 8,107 2,076
Reasoning Tokens 0 28,518
Response Time (avg) 3.47s 5.76s
Response Time (max) 17.73s 14.72s
Response Time (total) 72.90s 120.93s

Generation showcase

Hamster playing table tennis

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

#59 Claude Opus 4.8

none
Cost
$0.053
Time
22.0s
Tokens
2,253 tok

#53 Gemini 3 Flash Preview

low
Cost
$0.007
Time
12.1s
Tokens
2,289 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 4.8 6.5 10.0 50.0% 0 3.40s 834 1,472 0
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 3.48s 500 281 3,082
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 5.5 10.0 33.3% 0 3.29s 10,590 1,332 0
Gemini 3 Flash Preview 5.8 7.2 44.4% 1 6.00s 8,122 456 7,421
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 9.5 10.0 100.0% 0 17.73s 29,658 3,259 0
Gemini 3 Flash Preview 3.0 10.0 0.0% 0 3.27s 12,860 326 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 7.3 5.8 83.3% 1 1.77s 10,503 308 0
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 9.40s 7,261 279 3,656
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 5.3 7.2 44.4% 1 1.66s 975 61 0
Gemini 3 Flash Preview 5.3 7.2 44.4% 1 8.05s 645 12 6,410
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 3.48s 708 230 0
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 3.68s 492 120 981
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 9.9 10.0 100.0% 0 1.37s 909 95 0
Gemini 3 Flash Preview 9.9 10.0 100.0% 0 7.02s 621 71 2,752
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 7.7 10.0 66.7% 0 2.74s 894 783 0
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.77s 562 288 3,168
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 5.35s 11,775 355 0
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.99s 5,550 234 415
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 3.0 10.0 0.0% 0 3.41s 258 212 0
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 2.75s 156 9 633

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