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Anthropic: Claude Sonnet 4.6 vs Google: Gemini 2.5 Flash

Last updated at: 2026-03-15

Metric Claude Sonnet 4.6 Claude Sonnet 4.6 medium Release: 2026-02-17 Gemini 2.5 Flash Gemini 2.5 Flash medium Release: 2025-06-17
Rank #12 #15
Score 8.3 8.0
Consistency 9.5 9.5
Cost per result 8.525 2.619
Total Cost $1.023 $0.288
Tests Correct
Attempt pass rate 77.1% 72.9%
Flaky tests 1 1
Total Runs 48 48
Output Tokens 35,159 1,370
Reasoning Tokens 24,687 110,522
Response Time (avg) 11.23s 12.35s
Response Time (max) 46.35s 95.48s
Response Time (total) 89.84s 197.62s

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Score vs Total Cost

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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 Sonnet 4.6 7.7 10.0 66.7% 0 4.95s 1,031 1,093
Gemini 2.5 Flash 7.8 10.0 66.7% 0 6.98s 249 8,832
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 46.35s 5,871 3,962
Gemini 2.5 Flash 10.0 10.0 100.0% 0 28.44s 303 11,922
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 13.90s 649 742
Gemini 2.5 Flash 10.0 10.0 100.0% 0 4.06s 279 2,325
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 2.9 7.2 11.1% 1 0ms 25,790 16,919
Gemini 2.5 Flash 5.9 7.2 55.6% 1 37.34s 18 80,702
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 4.94s 256 433
Gemini 2.5 Flash 4.8 10.0 0.0% 0 4.86s 92 1,899
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 2.61s 318 552
Gemini 2.5 Flash 9.8 10.0 100.0% 0 2.62s 69 1,203
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 4.80s 589 635
Gemini 2.5 Flash 7.7 10.0 66.7% 0 3.94s 126 2,499
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 7.48s 655 351
Gemini 2.5 Flash 10.0 10.0 100.0% 0 6.20s 234 1,140

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