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DeepSeek: DeepSeek V4 Pro vs OpenAI: GPT-5.5

Last updated at: 2026-05-22

Metric DeepSeek V4 Pro DeepSeek V4 Pro none Release: 2026-04-24 GPT-5.5 GPT-5.5 none Release: 2026-04-24
Score 6.0 6.5
Rank #95 #86
Reliability 8.1 10.0
Consistency 8.9 8.7
Tests Correct
Attempt pass rate 48.3% 56.7%
Flaky tests 3 3
Total Runs 60 60
Cost per result 0.564 2.165
Total Cost $0.046 $0.217
Input Price $0.435 / 1M $5.000 / 1M
Output Price $0.870 / 1M $30.000 / 1M
Output Tokens 5,347 1,949
Reasoning Tokens 0 0
Response Time (avg) 13.48s 1.94s
Response Time (max) 58.65s 5.56s
Response Time (total) 269.56s 38.86s

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) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 3.5 8.0 16.7% 1 14.02s 704 0
GPT-5.5 6.9 7.9 66.7% 1 1.31s 213 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 5.4 6.8 33.3% 1 8.27s 527 0
GPT-5.5 6.8 10.0 50.0% 0 1.52s 447 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 9.5 10.0 100.0% 0 25.49s 1,911 0
GPT-5.5 3.0 10.0 0.0% 0 5.56s 300 0
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 30.54s 170 0
GPT-5.5 10.0 10.0 100.0% 0 1.18s 222 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 5.3 10.0 33.3% 0 3.17s 18 0
GPT-5.5 2.9 7.2 11.1% 1 1.31s 52 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 4.3 9.9 0.0% 0 3.75s 132 0
GPT-5.5 10.0 10.0 100.0% 0 3.41s 124 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 6.3 10.0 50.0% 0 8.23s 64 0
GPT-5.5 6.2 5.8 66.7% 1 1.15s 81 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 7.6 7.2 77.8% 1 19.72s 175 0
GPT-5.5 7.7 10.0 66.7% 0 1.36s 245 0
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 5.92s 219 0
GPT-5.5 10.0 10.0 100.0% 0 3.90s 247 0
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 15.59s 1,427 0
GPT-5.5 3.0 10.0 0.0% 0 5.01s 18 0

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