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Google: Gemini 2.5 Flash vs Qwen: Qwen3.5-Flash

Summary

Gemini 2.5 Flash vs Qwen3.5-Flash benchmark comparison: Qwen3.5-Flash leads on average score with 6.8 vs 6.2. Gemini 2.5 Flash has the lower benchmark cost at $0.016 vs $0.080. Gemini 2.5 Flash is faster at 875ms vs 63.29s, with pass rates of 46.0% vs 71.4%.

Recommended model: Gemini 2.5 Flash - Its score stays close to the best score here (6.2 vs 6.8), while costing about 5.2x less than Qwen3.5-Flash.

Last updated at: 2026-06-18

Metric Gemini 2.5 Flash Gemini 2.5 Flash none Release: 2025-06-17 Qwen3.5-Flash Qwen3.5-Flash medium Release: 2026-02-24
Score 6.2 6.8
Rank #93 #70
Reliability 10.0 10.0
Consistency 9.6 8.1
Tests Correct
Attempt pass rate 46.0% 71.4%
Flaky tests 1 5
Total Runs 63 63
Cost per result 0.169 0.871
Total Cost $0.016 $0.080
Input Price $0.300 / 1M $0.065 / 1M
Output Price $2.500 / 1M $0.260 / 1M
Total Input Tokens 35,926 38,926
Output Tokens 1,770 2,088
Reasoning Tokens 0 294,598
Response Time (avg) 875ms 63.29s
Response Time (max) 4.39s 234.29s
Response Time (total) 18.37s 1265.85s

Generation showcase

Hamster playing table tennis

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

#93 Gemini 2.5 Flash

none
Invalid SVG
Cost
$0.164
Time
215.5s
Tokens
65,659 tok

#70 Qwen3.5-Flash

medium
Cost
$0.002
Time
25.8s
Tokens
4,294 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
Gemini 2.5 Flash 3.0 10.0 0.0% 0 582ms 492 102 0
Qwen3.5-Flash 10.0 10.0 100.0% 0 59.11s 672 383 32,992
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 5.5 10.0 33.3% 0 736ms 8,122 483 0
Qwen3.5-Flash 3.7 7.2 22.2% 1 58.87s 6,685 302 90,081
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 3.0 10.0 0.0% 0 4.39s 12,519 366 0
Qwen3.5-Flash 10.0 10.0 100.0% 0 17.78s 14,934 483 8,270
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 10.0 10.0 100.0% 0 652ms 7,257 279 0
Qwen3.5-Flash 7.3 5.9 83.3% 1 56.99s 6,061 235 16,237
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 5.9 7.2 55.6% 1 495ms 633 12 0
Qwen3.5-Flash 5.3 7.2 44.4% 1 146.50s 581 58 43,615
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 5.0 10.0 0.0% 0 615ms 486 78 0
Qwen3.5-Flash 6.1 3.1 66.7% 1 40.05s 516 99 38,486
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 10.0 10.0 100.0% 0 590ms 615 72 0
Qwen3.5-Flash 10.0 10.0 100.0% 0 63.49s 699 98 14,139
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 7.7 10.0 66.7% 0 604ms 558 132 0
Qwen3.5-Flash 8.2 7.2 88.9% 1 27.61s 381 89 12,457
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 10.0 10.0 100.0% 0 1.91s 5,088 234 0
Qwen3.5-Flash 10.0 10.0 100.0% 0 10.33s 8,193 309 1,284
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 2.5 Flash 3.0 10.0 0.0% 0 1.15s 156 12 0
Qwen3.5-Flash 3.0 10.0 0.0% 0 48.98s 204 32 37,037

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