Aurora AlphavsGPT-4.5
Aurora Alpha is cheaper than GPT-4.5 at $0/M vs $75/M input tokens.
| Spec | Aurora Alpha | GPT-4.5 |
|---|---|---|
| Input price | Free | $75/M tokens |
| Output price | Free | $150/M tokens |
| Context window | 128K tokens | 128K tokens |
| Free API (OpenRouter) | No | No |
| Released | Feb 2026 | Feb 2025 |
Our Verdict
GPT-4.5
Aurora AlphaRunner-up
Not enough votes to call it. On the specs, GPT-4.5 has the edge: bigger model tier, major provider backing.
Too close to call
API pricing
Cost per 1M tokens
Aurora Alpha
Input
$0.000
Output
$0.000
GPT-4.5
Input
$75.00
Output
$150.00
Writing DNA
Style Comparison
Similarity
40%
Aurora Alpha uses 10.0x more emoji
Aurora Alpha
GPT-4.5
52%Vocabulary63%
21wSentence Length16w
0.43Hedging0.57
6.3Bold4.7
2.2Lists6.4
0.10Emoji0.00
0.69Headings1.30
0.16Transitions0.54
Based on 22 + 11 text responses
Research
What we learned reading every model
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