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DeepSeek: DeepSeek V4 Pro vs OpenAI: GPT-5.5

Last updated at: 2026-04-26

Metric DeepSeek V4 Pro DeepSeek V4 Pro high Release: 2026-04-24 GPT-5.5 GPT-5.5 none Release: 2026-04-24
Score 6.8 6.8
Rank #57 #59
Reliability 8.4 N/A
Consistency 8.0 8.3
Tests Correct
Attempt pass rate 73.2% 61.1%
Flaky tests 4 4
Total Runs 54 54
Cost per result 1.825 2.162
Total Cost $0.201 $0.195
Input Price $1.740 / 1M $5.000 / 1M
Output Price $3.480 / 1M $30.000 / 1M
Output Tokens 11,876 1,910
Reasoning Tokens 45,999 0
Response Time (avg) 60.02s 1.83s
Response Time (max) 358.35s 5.56s
Response Time (total) 1080.31s 32.86s

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 7.4 10.0 75.0% 0 16.53s 71 3,617
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 2.6 0.0 50.0% 1 51.77s 105 2,641
GPT-5.5 10.0 10.0 100.0% 0 2.05s 426 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 6.6 10.0 100.0% 0 64.72s 183 1,946
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 23.62s 229 1,710
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 3.0 6.9 16.7% 1 205.66s 10,529 28,089
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 6.1 3.1 66.7% 1 25.09s 76 1,152
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 10.0 10.0 100.0% 0 41.16s 205 2,416
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 6.9 7.0 83.3% 1 34.92s 106 3,835
GPT-5.5 6.7 7.9 55.6% 1 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 21.33s 372 593
GPT-5.5 10.0 10.0 100.0% 0 3.90s 247 0

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