GPT-5 MinivsOpenAI o4 Mini High
GPT-5 Mini is cheaper than OpenAI o4 Mini High at $0.25/M vs $1.1/M input tokens.
| Spec | GPT-5 Mini | OpenAI o4 Mini High |
|---|---|---|
| Input price | $0.25/M tokens | $1.1/M tokens |
| Output price | $2/M tokens | $4.4/M tokens |
| Context window | — | 200K tokens |
| Weights | Closed | Closed |
| Free API (OpenRouter) | No | No |
| Released | Aug 2025 | Apr 2025 |
| SWE-bench Verified | ~70% | 68.1% |
Our Verdict
GPT-5 Mini
OpenAI o4 Mini High
Not enough votes to call it. On the specs, nothing separates them.
Too close to call
API pricing
Cost per 1M tokens
GPT-5 Mini
Input
$0.25
4.4× cheaper
Output
$2.00
2.2× cheaper
OpenAI o4 Mini High
Input
$1.10
Output
$4.40
GPT-5 Mini is cheaper on both: 4.4× input, 2.2× output.
Where to run it
3 hosts
OpenAI o4 Mini High1 host
Per million tokens. Prices and uptime via OpenRouter, checked 8 Sep 2026.
Writing DNA
Style Comparison
Similarity
72%
OpenAI o4 Mini High uses 1.8x more emoji
GPT-5 Mini
OpenAI o4 Mini High
62%Vocabulary68%
22wSentence Length21w
0.21Hedging0.36
0.0Bold0.0
3.8Lists1.6
0.00Emoji0.02
0.00Headings0.00
0.04Transitions0.03
Based on 21 + 16 text responses
Research
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