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DeepSeek: DeepSeek V4 Pro vs Google: Gemini 3.5 Flash

Summary

DeepSeek V4 Pro vs Gemini 3.5 Flash benchmark comparison: DeepSeek V4 Pro leads on average score with 7.2 vs 6.8. DeepSeek V4 Pro has the lower benchmark cost at $0.034 vs $0.108. Gemini 3.5 Flash is faster at 1.57s vs 6.41s, with pass rates of 52.4% vs 68.3%.

Recommended model: DeepSeek V4 Pro - It has the best score here (7.2), while costing about 3.2x less than Gemini 3.5 Flash.

Last updated at: 2026-06-18

Metric DeepSeek V4 Pro DeepSeek V4 Pro none Release: 2026-04-24 Gemini 3.5 Flash Gemini 3.5 Flash minimal Release: 2026-05-19
Score 7.2 6.8
Rank #58 #71
Reliability 9.9 10.0
Consistency 8.8 9.6
Tests Correct
Attempt pass rate 52.4% 68.3%
Flaky tests 3 1
Total Runs 63 63
Cost per result 0.333 0.767
Total Cost $0.034 $0.108
Input Price $0.435 / 1M $1.500 / 1M
Output Price $0.870 / 1M $9.000 / 1M
Total Input Tokens 53,558 39,847
Output Tokens 11,424 5,277
Reasoning Tokens 0 0
Response Time (avg) 6.41s 1.57s
Response Time (max) 30.09s 5.51s
Response Time (total) 134.66s 33.02s

Generation showcase

Hamster playing table tennis

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

#58 DeepSeek V4 Pro

none
Invalid SVG
Cost
$0.000
Time
300.0s
Tokens
0 tok

#71 Gemini 3.5 Flash

minimal
Cost
$0.041
Time
20.4s
Tokens
4,608 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
DeepSeek V4 Pro 3.2 6.1 16.7% 2 4.02s 540 1,168 0
Gemini 3.5 Flash 6.5 10.0 50.0% 0 892ms 492 405 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 5.6 10.0 33.3% 0 13.38s 7,275 5,500 0
Gemini 3.5 Flash 5.6 9.9 33.3% 0 2.75s 8,122 3,456 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 9.5 10.0 100.0% 0 23.74s 27,529 2,235 0
Gemini 3.5 Flash 3.0 10.0 0.0% 0 3.56s 15,780 404 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 10.0 10.0 100.0% 0 4.61s 7,568 200 0
Gemini 3.5 Flash 10.0 10.0 100.0% 0 1.66s 7,548 279 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 5.3 10.0 33.3% 0 3.72s 666 24 0
Gemini 3.5 Flash 10.0 10.0 100.0% 0 899ms 633 12 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 5.0 10.0 0.0% 0 2.05s 471 126 0
Gemini 3.5 Flash 10.0 10.0 100.0% 0 922ms 486 117 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 6.3 5.8 66.7% 1 4.12s 627 713 0
Gemini 3.5 Flash 6.4 5.8 66.7% 1 893ms 615 76 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 10.0 10.0 100.0% 0 3.61s 594 442 0
Gemini 3.5 Flash 10.0 10.0 100.0% 0 1.45s 558 282 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 10.0 10.0 100.0% 0 7.40s 8,105 328 0
Gemini 3.5 Flash 10.0 10.0 100.0% 0 2.79s 5,457 234 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Pro 3.0 10.0 0.0% 0 5.76s 183 688 0
Gemini 3.5 Flash 3.0 10.0 0.0% 0 1.76s 156 12 0

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