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DeepSeek: DeepSeek V4 Pro vs OpenAI: GPT-5.3-Codex

Last updated at: 2026-05-22

Metric DeepSeek V4 Pro DeepSeek V4 Pro high Release: 2026-04-24 GPT-5.3-Codex GPT-5.3-Codex medium Release: 2026-02-05
Score 6.6 8.3
Rank #80 #15
Reliability 9.0 10.0
Consistency 8.3 8.4
Tests Correct
Attempt pass rate 66.7% 81.7%
Flaky tests 4 4
Total Runs 60 60
Cost per result 1.927 4.891
Total Cost $0.212 $0.685
Input Price $0.435 / 1M $1.750 / 1M
Output Price $0.870 / 1M $14.000 / 1M
Output Tokens 12,211 2,332
Reasoning Tokens 53,774 42,616
Response Time (avg) 58.93s 15.97s
Response Time (max) 358.35s 100.93s
Response Time (total) 1119.75s 319.30s

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Score vs Total Cost

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Score vs Response Time (avg)

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Score vs Total Output Tokens

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 7.4 10.0 75.0% 0 16.53s 71 3,617
GPT-5.3-Codex 8.7 7.9 91.7% 1 4.16s 240 1,722
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 2.8 5.0 25.0% 1 51.77s 105 2,641
GPT-5.3-Codex 10.0 10.0 100.0% 0 18.45s 514 7,266
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 10.0 10.0 100.0% 0 65.02s 465 5,914
GPT-5.3-Codex 10.0 10.0 100.0% 0 19.56s 364 2,731
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 8.8 10.0 100.0% 0 23.62s 229 1,710
GPT-5.3-Codex 10.0 10.0 100.0% 0 3.07s 234 728
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 3.0 6.9 16.7% 1 205.66s 10,529 28,089
GPT-5.3-Codex 5.9 7.2 55.6% 1 64.31s 64 25,308
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 6.1 3.1 66.7% 1 25.09s 76 1,152
GPT-5.3-Codex 4.6 10.0 0.0% 0 4.87s 187 331
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 10.0 10.0 100.0% 0 41.16s 205 2,416
GPT-5.3-Codex 10.0 10.0 100.0% 0 3.04s 93 693
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 7.4 7.2 88.9% 1 34.92s 106 3,835
GPT-5.3-Codex 9.0 7.9 88.9% 1 5.12s 352 1,644
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 10.0 10.0 100.0% 0 21.33s 372 593
GPT-5.3-Codex 10.0 10.0 100.0% 0 6.37s 254 492
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 3.0 10.0 0.0% 0 39.14s 53 3,807
GPT-5.3-Codex 2.8 1.6 33.3% 1 14.43s 30 1,701

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