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Anthropic: Claude Sonnet 5 vs Google: Gemini 3.5 Flash

Summary

Claude Sonnet 5 vs Gemini 3.5 Flash benchmark comparison: Gemini 3.5 Flash leads on average score with 9.8 vs 7.9. Claude Sonnet 5 has the lower benchmark cost at $0.550 vs $1.115. Gemini 3.5 Flash is faster at 8.84s vs 9.94s, with pass rates of 79.4% vs 96.8%.

Recommended model: Gemini 3.5 Flash - It has the strongest score in this comparison (9.8) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-06-30

Metric Claude Sonnet 5 Claude Sonnet 5 medium Release: 2026-06-30 Gemini 3.5 Flash Gemini 3.5 Flash high Release: 2026-05-19
Score 7.9 9.8
Rank #30 #1
Reliability 10.0 10.0
Consistency 9.0 9.6
Tests Correct
Attempt pass rate 79.4% 96.8%
Flaky tests 3 1
Total Runs 63 63
Cost per result 3.662 5.575
Total Cost $0.550 $1.115
Input Price $2.000 / 1M $1.500 / 1M
Output Price $10.000 / 1M $9.000 / 1M
Total Input Tokens 67,416 37,594
Output Tokens 34,012 1,975
Reasoning Tokens 7,673 115,638
Response Time (avg) 9.94s 8.84s
Response Time (max) 56.94s 34.82s
Response Time (total) 208.71s 185.57s

Generation showcase

Hamster playing table tennis

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

#30 Claude Sonnet 5

medium
Cost
$0.007
Time
6.4s
Tokens
832 tok

#1 Gemini 3.5 Flash

high
Cost
$0.208
Time
118.2s
Tokens
23,158 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 Sonnet 5 10.0 10.0 100.0% 0 3.80s 834 1,220 446
Gemini 3.5 Flash 10.0 10.0 100.0% 0 2.57s 492 174 4,997
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 5 9.0 7.9 88.9% 1 17.28s 10,590 13,153 2,379
Gemini 3.5 Flash 10.0 10.0 100.0% 0 22.96s 8,118 456 47,129
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 5 4.5 2.1 66.7% 1 37.01s 29,394 4,848 2,170
Gemini 3.5 Flash 10.0 10.0 100.0% 0 22.37s 12,873 351 16,323
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 5 10.0 10.0 100.0% 0 3.16s 10,503 312 0
Gemini 3.5 Flash 10.0 10.0 100.0% 0 6.43s 7,548 279 8,466
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 5 7.7 10.0 66.7% 0 20.38s 975 12,140 1,994
Gemini 3.5 Flash 7.6 7.2 77.8% 1 14.09s 633 12 24,721
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 5 4.8 3.2 33.3% 1 4.32s 708 264 0
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.63s 486 115 1,650
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 5 9.9 10.0 100.0% 0 3.10s 909 318 269
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.35s 615 70 3,799
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 5 7.7 10.0 66.7% 0 2.98s 894 407 121
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.23s 558 241 4,940
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 5 10.0 10.0 100.0% 0 10.70s 12,351 433 90
Gemini 3.5 Flash 9.8 10.0 100.0% 0 4.96s 6,115 265 1,608
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 5 3.0 10.0 0.0% 0 7.06s 258 917 204
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.94s 156 12 2,005

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