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DeepSeek: DeepSeek V4 Flash vs Google: Gemini 2.5 Flash

Summary

DeepSeek V4 Flash vs Gemini 2.5 Flash benchmark comparison: Gemini 2.5 Flash leads on average score with 7.8 vs 7.7. DeepSeek V4 Flash has the lower benchmark cost at $0.029 vs $0.379. Gemini 2.5 Flash is faster at 15.49s vs 45.85s, with pass rates of 74.6% vs 69.8%.

Recommended model: DeepSeek V4 Flash - Its score stays close to the best score here (7.7 vs 7.8), while costing about 13.2x less than Gemini 2.5 Flash.

Last updated at: 2026-06-04

Metric DeepSeek V4 Flash DeepSeek V4 Flash high Release: 2026-04-24 Gemini 2.5 Flash Gemini 2.5 Flash medium Release: 2025-06-17
Score 7.7 7.8
Rank #31 #28
Reliability 10.0 10.0
Consistency 8.5 9.6
Tests Correct
Attempt pass rate 74.6% 69.8%
Flaky tests 4 1
Total Runs 63 63
Cost per result 0.299 2.701
Total Cost $0.029 $0.379
Input Price $0.099 / 1M $0.300 / 1M
Output Price $0.197 / 1M $2.500 / 1M
Total Input Tokens 39,745 34,476
Output Tokens 10,310 1,930
Reasoning Tokens 123,501 145,145
Response Time (avg) 45.85s 15.49s
Response Time (max) 218.13s 95.48s
Response Time (total) 962.79s 325.39s

Generation showcase

Hamster playing table tennis

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

#31 DeepSeek V4 Flash

high
Cost
$0.003
Time
93.1s
Tokens
7,926 tok

#28 Gemini 2.5 Flash

medium
Invalid SVG
Cost
$0.000
Time
274.0s
Tokens
0 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 Flash 8.3 10.0 75.0% 0 28.51s 540 140 7,770
Gemini 2.5 Flash 8.4 10.0 75.0% 0 6.30s 492 255 10,233
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 7.8 10.0 66.7% 0 50.60s 7,279 395 34,862
Gemini 2.5 Flash 7.8 10.0 66.7% 0 41.01s 6,669 543 32,303
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 76.57s 14,016 465 7,347
Gemini 2.5 Flash 10.0 10.0 100.0% 0 28.44s 12,522 303 11,922
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 28.03s 7,290 201 1,179
Gemini 2.5 Flash 10.0 10.0 100.0% 0 4.06s 7,257 279 2,325
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 4.1 4.4 44.5% 2 100.31s 666 27 59,249
Gemini 2.5 Flash 5.9 7.2 55.6% 1 37.34s 633 18 80,702
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 6.1 3.1 66.7% 1 25.15s 471 79 632
Gemini 2.5 Flash 4.8 10.0 0.0% 0 4.86s 486 92 1,899
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 15.36s 627 63 1,622
Gemini 2.5 Flash 9.8 10.0 100.0% 0 2.62s 615 69 1,203
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 8.2 7.2 88.9% 1 26.11s 594 196 1,767
Gemini 2.5 Flash 7.7 10.0 66.7% 0 3.18s 558 126 2,499
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 74.73s 8,079 228 542
Gemini 2.5 Flash 10.0 10.0 100.0% 0 6.20s 5,088 234 1,140
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 3.0 10.0 0.0% 0 54.46s 183 8,516 8,531
Gemini 2.5 Flash 3.0 10.0 0.0% 0 2.76s 156 11 919

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