GPT-5.2vsGPT-5.4 Pro
GPT-5.2 is cheaper than GPT-5.4 Pro at $1.75/M vs $30/M input tokens.
| Spec | GPT-5.2 | GPT-5.4 Pro |
|---|---|---|
| Input price | $1.75/M tokens | $30/M tokens |
| Output price | $14/M tokens | $180/M tokens |
| Context window | 400K tokens | 1.1M tokens |
| Weights | Closed | Closed |
| Free API (OpenRouter) | No | No |
| Released | Dec 2025 | Mar 2026 |
Our Verdict
GPT-5.4 Pro
GPT-5.2Runner-up
Not enough votes to call it. On the specs, GPT-5.4 Pro has the edge: newer, bigger context window.
GPT-5.2 costs 13x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
GPT-5.2
Input
$1.75
17× cheaper
Output
$14.00
13× cheaper
GPT-5.4 Pro
Input
$30.00
Output
$180.00
GPT-5.2 is cheaper on both: 17× input, 13× output.
Where to run it
4 hosts
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
50%
GPT-5.2 uses 5.8x more emoji
GPT-5.2
GPT-5.4 Pro
64%Vocabulary50%
16wSentence Length35w
0.34Hedging0.70
9.4Bold7.5
3.9Lists8.3
0.06Emoji0.00
0.89Headings2.52
0.31Transitions0.01
Based on 15 + 12 text responses
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