GPT-4.5vsGPT-5.2
GPT-5.2 is cheaper than GPT-4.5 at $1.75/M vs $75/M input tokens.
| Spec | GPT-4.5 | GPT-5.2 |
|---|---|---|
| Input price | $75/M tokens | $1.75/M tokens |
| Output price | $150/M tokens | $14/M tokens |
| Context window | 128K tokens | 400K tokens |
| Released | Feb 2025 | Dec 2025 |
| SWE-bench Verified | 28.0% | 80.0% |
Our Verdict
GPT-5.2
GPT-4.5Runner-up
Not enough votes to call it. On the specs, GPT-5.2 has the edge: newer, bigger context window.
GPT-5.2 costs 11x less per token.
Too close to call
API pricing
Cost per 1M tokens
GPT-4.5
Input
$75.00
Output
$150.00
GPT-5.2
Input
$1.75
43× cheaper
Output
$14.00
11× cheaper
GPT-5.2 is cheaper on both — 43× input, 11× output
Writing DNA
Style Comparison
Similarity
67%
GPT-5.2 uses 5.8x more emoji
GPT-4.5
GPT-5.2
63%Vocabulary64%
16wSentence Length16w
0.57Hedging0.34
4.7Bold9.4
6.4Lists3.9
0.00Emoji0.06
1.30Headings0.89
0.54Transitions0.31
Based on 11 + 15 text responses
Research
What we learned reading every model
FAQ
