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DeepSeek: DeepSeek V4 Pro vs OpenAI: GPT-5.5

Last updated at: 2026-04-24

Metric DeepSeek V4 Pro DeepSeek V4 Pro high Release: 2026-04-24 GPT-5.5 GPT-5.5 medium Release: 2026-04-24
Score 8.2 9.0
Rank #20 #5
Reliability N/A N/A
Consistency 9.6 9.2
Tests Correct
Attempt pass rate 74.1% 87.0%
Flaky tests 1 2
Total Runs 24 54
Cost per result 1.224 19.226
Total Cost $0.160 $2.884
Input Price $1.740 / 1M $5.000 / 1M
Output Price $3.480 / 1M $30.000 / 1M
Output Tokens 671 1,920
Reasoning Tokens 39,383 89,632
Response Time (avg) 71.21s 32.75s
Response Time (max) 351.99s 332.10s
Response Time (total) 1281.73s 589.59s

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 8.3 10.0 75.0% 0 26.93s 70 2,008
GPT-5.5 10.0 10.0 100.0% 0 4.66s 250 1,335
Coding 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 93.00s 82 2,808
GPT-5.5 10.0 10.0 100.0% 0 9.09s 318 1,391
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 71.08s 134 2,163
GPT-5.5 10.0 10.0 100.0% 0 19.29s 312 2,841
Data parsing and extraction 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 63.00s 67 1,071
GPT-5.5 10.0 10.0 100.0% 0 4.18s 234 593
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% 0 202.56s 11 25,343
GPT-5.5 5.3 7.2 44.4% 1 164.14s 67 79,625
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 5.0 10.0 0.0% 0 26.96s 51 734
GPT-5.5 10.0 10.0 100.0% 0 4.16s 138 223
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 14.60s 21 1,236
GPT-5.5 10.0 10.0 100.0% 0 3.36s 93 538
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 7.6 7.4 77.8% 1 69.69s 151 3,847
GPT-5.5 8.6 7.9 77.8% 1 6.78s 250 2,254
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 11.05s 84 173
GPT-5.5 10.0 10.0 100.0% 0 10.57s 258 832

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