GPT-4 vs GPT-5
Compare GPT-4 and GPT-5, both from OpenAI, context windows of 8K vs 400K, tested across 26 shared challenges. Updated May 2026.
Which is better, GPT-4 or GPT-5?
GPT-4 and GPT-5 are both competitive models. GPT-4 costs $30/M input tokens vs $1.25/M for GPT-5. Context windows: 8K vs 400K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-4 and GPT-5
GPT-4 is made by openai while GPT-5 is from openai. GPT-4 has a 8K token context window compared to GPT-5's 400K. On pricing, GPT-4 costs $30/M input tokens vs $1.25/M for GPT-5.
API pricing
Per 1M tokens
GPT-4
Input
$30.00
Output
$60.00
GPT-5
Input
$1.25
24× cheaper
Output
$10.00
6.0× cheaper
GPT-5 is cheaper on both — 24× input, 6.0× output
Our Verdict
GPT-5
GPT-4Runner-up
No community votes yet. On paper, GPT-5 has the edge — newer, bigger context window.
GPT-5 is 6.0x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
46%
GPT-5 uses 16.2x more headings
GPT-4
GPT-5
59%Vocabulary65%
18wSentence Length13w
1.10Hedging0.20
0.8Bold0.2
2.5Lists4.6
0.00Emoji0.00
0.00Headings0.16
0.45Transitions0.03
Based on 15 + 16 text responses
FAQ
