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

Summary

DeepSeek V4 Pro (high) vs GPT-5.6 Luna (medium) benchmark comparison: The average score is effectively tied at 7.6 vs 7.6. DeepSeek V4 Pro (high) has the lower benchmark cost at $0.157 vs $0.258. GPT-5.6 Luna (medium) is faster at 6.70s vs 77.20s, with pass rates of 66.7% vs 63.5%.

Recommended model: GPT-5.6 Luna (medium) - It has the best score here (7.6), while responding about 11.5x faster than DeepSeek V4 Pro (high).

Last updated at: 2026-07-09

Metric DeepSeek V4 Pro DeepSeek V4 Pro high Release: 2026-04-24 GPT-5.6 Luna GPT-5.6 Luna medium Release: 2026-07-09
Score 7.6 7.6
Rank #52 #54
Reliability 9.3 10.0
Consistency 7.0 9.6
Tests Correct
Attempt pass rate 66.7% 63.5%
Flaky tests 8 1
Total Runs 63 63
Cost per result 1.742 1.978
Total Cost $0.157 $0.258
Input Price $0.435 / 1M $1.000 / 1M
Output Price $0.870 / 1M $6.000 / 1M
Total Input Tokens 38,726 35,699
Output Tokens 6,334 2,148
Reasoning Tokens 159,151 34,740
Response Time (avg) 77.20s 6.70s
Response Time (max) 416.76s 29.85s
Response Time (total) 1621.17s 140.62s

Generation showcase

Hamster playing table tennis

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

#52 DeepSeek V4 Pro

high
Cost
$0.023
Time
257.6s
Tokens
14,870 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 5.7 5.9 58.3% 2 25.70s 536 149 3,214
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 6.1 4.6 66.7% 2 243.00s 5,090 383 84,580
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 10.0 10.0 100.0% 0 38.17s 14,060 454 5,836
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 25.03s 7,690 274 2,166
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 3.6 7.2 22.2% 1 151.46s 569 4,404 50,391
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 10.0 10.0 100.0% 0 8.83s 471 115 1,013
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 7.8 6.6 83.3% 1 8.73s 627 66 2,726
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 6.9 4.9 77.8% 2 56.85s 591 178 2,563
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 9.8 10.0 100.0% 0 15.92s 8,909 295 701
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 34.01s 183 16 5,961
GPT-5.6 Luna 3.0 10.0 0.0% 0 6.64s 195 29 2,379

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