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DeepSeek: DeepSeek V4 Pro vs Google: Gemini 2.5 Flash

Summary

DeepSeek V4 Pro vs Gemini 2.5 Flash benchmark comparison: Gemini 2.5 Flash leads on average score with 8.2 vs 8.1. DeepSeek V4 Pro has the lower benchmark cost at $0.098 vs $0.379. Gemini 2.5 Flash is faster at 15.49s vs 72.22s, with pass rates of 66.7% vs 69.8%.

Recommended model: DeepSeek V4 Pro - Its score stays close to the best score here (8.1 vs 8.2), while costing about 3.9x less than Gemini 2.5 Flash.

Last updated at: 2026-06-12

Metric DeepSeek V4 Pro DeepSeek V4 Pro high Release: 2026-04-24 Gemini 2.5 Flash Gemini 2.5 Flash medium Release: 2025-06-17
Score 8.1 8.2
Rank #30 #27
Reliability 9.6 10.0
Consistency 7.8 9.6
Tests Correct
Attempt pass rate 66.7% 69.8%
Flaky tests 6 1
Total Runs 57 63
Cost per result 0.978 2.701
Total Cost $0.098 $0.379
Input Price $0.435 / 1M $0.300 / 1M
Output Price $0.870 / 1M $2.500 / 1M
Total Input Tokens 35,122 34,476
Output Tokens 6,315 1,930
Reasoning Tokens 93,205 145,145
Response Time (avg) 72.22s 15.49s
Response Time (max) 437.44s 95.48s
Response Time (total) 1444.45s 325.39s

Generation showcase

Hamster playing table tennis

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

#30 DeepSeek V4 Pro

high
Cost
$0.023
Time
257.6s
Tokens
14,870 tok

#27 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 Pro 5.7 5.9 58.3% 2 25.70s 536 149 3,214
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 Pro 7.7 10.0 66.7% 0 308.19s 1,583 368 42,658
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 Pro 10.0 10.0 100.0% 0 38.17s 14,060 454 5,836
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 Pro 10.0 10.0 100.0% 0 25.03s 7,690 274 2,166
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 Pro 3.6 7.2 22.2% 1 130.09s 472 4,400 26,367
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 Pro 10.0 10.0 100.0% 0 8.83s 471 115 1,013
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 Pro 7.8 6.6 83.3% 1 8.73s 627 66 2,726
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 Pro 6.9 4.9 77.8% 2 56.85s 591 178 2,563
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 Pro 9.8 10.0 100.0% 0 15.92s 8,909 295 701
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 Pro 3.0 10.0 0.0% 0 34.01s 183 16 5,961
Gemini 2.5 Flash 3.0 10.0 0.0% 0 2.76s 156 11 919

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