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DeepSeek: DeepSeek V4 Pro vs OpenAI: GPT-5.6 Luna

Summary

DeepSeek V4 Pro vs GPT-5.6 Luna (medium) benchmark comparison: GPT-5.6 Luna (medium) leads on average score with 7.6 vs 7.2. DeepSeek V4 Pro has the lower benchmark cost at $0.034 vs $0.258. DeepSeek V4 Pro is faster at 6.41s vs 6.70s, with pass rates of 52.4% vs 63.5%.

Recommended model: DeepSeek V4 Pro - Its score stays close to the best score here (7.2 vs 7.6), while costing about 7.7x less than GPT-5.6 Luna (medium).

Last updated at: 2026-07-09

Metric DeepSeek V4 Pro DeepSeek V4 Pro none Release: 2026-04-24 GPT-5.6 Luna GPT-5.6 Luna medium Release: 2026-07-09
Score 7.2 7.6
Rank #70 #54
Reliability 9.9 10.0
Consistency 8.8 9.6
Tests Correct
Attempt pass rate 52.4% 63.5%
Flaky tests 3 1
Total Runs 63 63
Cost per result 0.333 1.978
Total Cost $0.034 $0.258
Input Price $0.435 / 1M $1.000 / 1M
Output Price $0.870 / 1M $6.000 / 1M
Total Input Tokens 53,558 35,699
Output Tokens 11,424 2,148
Reasoning Tokens 0 34,740
Response Time (avg) 6.41s 6.70s
Response Time (max) 30.09s 29.85s
Response Time (total) 134.66s 140.62s

Generation showcase

Hamster playing table tennis

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

#70 DeepSeek V4 Pro

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

#54 GPT-5.6 Luna

medium
Cost
$0.014
Time
14.6s
Tokens
2,362 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
GPT-5.6 Luna 8.3 10.0 75.0% 0 2.52s 606 160 987
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
GPT-5.6 Luna 5.4 7.2 44.4% 1 10.38s 7,302 564 9,928
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
GPT-5.6 Luna 10.0 10.0 100.0% 0 9.53s 12,500 375 1,354
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
GPT-5.6 Luna 10.0 10.0 100.0% 0 1.95s 7,140 234 324
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
GPT-5.6 Luna 5.3 10.0 33.3% 0 17.37s 723 68 16,531
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
GPT-5.6 Luna 5.1 10.0 0.0% 0 4.34s 477 112 496
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
GPT-5.6 Luna 9.9 10.0 100.0% 0 2.38s 660 95 393
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
GPT-5.6 Luna 7.8 10.0 66.7% 0 4.04s 642 255 2,104
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
GPT-5.6 Luna 10.0 10.0 100.0% 0 6.02s 5,454 256 244
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
GPT-5.6 Luna 3.0 10.0 0.0% 0 6.64s 195 29 2,379

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