GPT-6 Astravso3 Mini
o3 Mini is cheaper than GPT-6 Astra at $1.1/M vs $10/M input tokens.
| Spec | GPT-6 Astra | o3 Mini |
|---|---|---|
| Input price | $10/M tokens | $1.1/M tokens |
| Output price | $50/M tokens | $4.4/M tokens |
| Context window | 1.1M tokens | 64K tokens |
| Weights | Closed | Closed |
| Free API (OpenRouter) | No | No |
| Released | Sep 2026 | Dec 2024 |
Our Verdict
GPT-6 Astra
o3 MiniRunner-up
Not enough votes to call it. On the specs, GPT-6 Astra has the edge: bigger model tier, newer, bigger context window.
o3 Mini costs 11x less per token.
Slight edge
API pricing
Cost per 1M tokens
GPT-6 Astra
Input
$10.00
Output
$50.00
o3 Mini
Input
$1.10
9.1× cheaper
Output
$4.40
11× cheaper
o3 Mini is cheaper on both: 9.1× input, 11× output.
Where to run it
3 hosts
o3 Mini1 host
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
74%
GPT-6 Astra uses 3.6x more emoji
GPT-6 Astra
o3 Mini
62%Vocabulary65%
15wSentence Length18w
0.87Hedging0.84
4.0Bold2.8
2.3Lists1.5
0.04Emoji0.00
0.77Headings0.33
0.10Transitions0.29
Based on 27 + 17 text responses
Research
What we learned reading every model
FAQ
