GPT-5 MinivsGPT-6 Astra
GPT-5 Mini is cheaper than GPT-6 Astra at $0.25/M vs $10/M input tokens.
| Spec | GPT-5 Mini | GPT-6 Astra |
|---|---|---|
| Input price | $0.25/M tokens | $10/M tokens |
| Output price | $2/M tokens | $50/M tokens |
| Context window | — | 1.1M tokens |
| Weights | Closed | Closed |
| Free API (OpenRouter) | No | No |
| Released | Aug 2025 | Sep 2026 |
Our Verdict
GPT-6 Astra
GPT-5 MiniRunner-up
Not enough votes to call it. On the specs, GPT-6 Astra has the edge: bigger model tier, newer, bigger context window.
GPT-5 Mini costs 25x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
GPT-5 Mini
Input
$0.25
40× cheaper
Output
$2.00
25× cheaper
GPT-6 Astra
Input
$10.00
Output
$50.00
GPT-5 Mini is cheaper on both: 40× input, 25× output.
Where to run it
4 hosts
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
64%
GPT-6 Astra uses 398.6x more bold
GPT-5 Mini
GPT-6 Astra
62%Vocabulary62%
22wSentence Length15w
0.21Hedging0.87
0.0Bold4.0
3.8Lists2.3
0.00Emoji0.04
0.00Headings0.77
0.04Transitions0.10
Based on 21 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
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