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  5. Aurora AlphavsOpenAI o3
Updated Feb 2026

Aurora AlphavsOpenAI o3

Aurora Alpha is cheaper than OpenAI o3 at $0/M vs $10/M input tokens.

Aurora Alpha and OpenAI o3 compared across 53 shared prompts
SpecAurora AlphaOpenAI o3
Input priceFree$10/M tokens
Output priceFree$40/M tokens
Context window128K tokens—
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedFeb 2026Apr 2025
Our Verdict
OpenAI o3
OpenAI o3
Aurora Alpha
Aurora AlphaRunner-up

Not enough votes to call it. On the specs, OpenAI o3 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
OpenAI o3
Input
$10.00
Output
$40.00
Where to run it

1 host

Aurora Alpha

No hosts listed on OpenRouter.

OpenAI o31 host
HostInOutContextUptime
OpenAI$2.00 in·$8.00 out·200k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 8 Sep 2026.

Writing DNA

Style Comparison

Similarity
62%

Aurora Alpha uses 10.0x more emoji

Aurora Alpha
OpenAI o3
52%Vocabulary70%
21wSentence Length14w
0.43Hedging0.27
6.3Bold0.6
2.2Lists2.8
0.10Emoji0.00
0.69Headings0.32
0.16Transitions0.10
Based on 22 + 19 text responses
Research

What we learned reading every model

FAQ

Common questions

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