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OpenAI: GPT-5.4 vs OpenAI: GPT-5.5

Summary

GPT-5.4 vs GPT-5.5 benchmark comparison: GPT-5.5 leads on average score with 9.3 vs 8.5. GPT-5.5 has the lower benchmark cost at $0.907 vs $1.210. GPT-5.5 is faster at 9.76s vs 22.35s, with pass rates of 76.2% vs 85.7%.

Recommended model: GPT-5.5 - It has the best score here (9.3), while responding about 2.3x faster than GPT-5.4.

Last updated at: 2026-06-12

Metric GPT-5.4 GPT-5.4 medium Release: 2026-03-05 GPT-5.5 GPT-5.5 low Release: 2026-04-24
Score 8.5 9.3
Rank #20 #5
Reliability 10.0 10.0
Consistency 8.6 10.0
Tests Correct
Attempt pass rate 76.2% 85.7%
Flaky tests 4 0
Total Runs 63 63
Cost per result 8.640 5.035
Total Cost $1.210 $0.907
Input Price $2.500 / 1M $5.000 / 1M
Output Price $15.000 / 1M $30.000 / 1M
Total Input Tokens 34,108 34,209
Output Tokens 2,242 2,046
Reasoning Tokens 72,707 22,460
Response Time (avg) 22.35s 9.76s
Response Time (max) 100.41s 56.19s
Response Time (total) 469.29s 204.92s

Generation showcase

Hamster playing table tennis

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

#20 GPT-5.4

medium
Cost
$0.214
Time
199.6s
Tokens
14,349 tok

#5 GPT-5.5

low
Cost
$0.068
Time
37.0s
Tokens
2,339 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
GPT-5.4 8.3 10.0 75.0% 0 4.11s 606 240 1,511
GPT-5.5 10.0 10.0 100.0% 0 4.41s 606 238 1,020
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 8.8 7.8 88.9% 1 44.36s 7,305 433 24,216
GPT-5.5 10.0 10.0 100.0% 0 15.04s 7,302 423 6,402
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 10.0 10.0 100.0% 0 20.57s 11,019 301 3,543
GPT-5.5 10.0 10.0 100.0% 0 9.56s 11,019 303 717
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 10.0 10.0 100.0% 0 5.32s 7,140 234 804
GPT-5.5 10.0 10.0 100.0% 0 3.28s 7,140 228 157
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 5.3 7.2 44.4% 1 74.27s 619 61 34,748
GPT-5.5 5.3 10.0 33.3% 0 28.05s 723 69 11,609
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 4.7 3.1 33.3% 1 4.92s 477 145 321
GPT-5.5 10.0 10.0 100.0% 0 5.17s 477 133 245
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 10.0 10.0 100.0% 0 3.11s 660 93 897
GPT-5.5 9.9 10.0 100.0% 0 3.74s 660 93 415
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 8.2 7.2 88.9% 1 9.14s 642 441 3,815
GPT-5.5 10.0 10.0 100.0% 0 4.74s 642 279 954
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 10.0 10.0 100.0% 0 13.28s 5,445 264 1,031
GPT-5.5 10.0 10.0 100.0% 0 4.96s 5,445 250 101
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 3.0 10.0 0.0% 0 13.95s 195 30 1,821
GPT-5.5 3.0 10.0 0.0% 0 10.06s 195 30 840

Quick Compare

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