GPT-5vsOptimus Alpha
Optimus Alpha has a larger context window than GPT-5 (1.0M tokens vs 400K tokens).
| Spec | GPT-5 | Optimus Alpha |
|---|---|---|
| Input price | $1.25/M tokens | — |
| Output price | $10/M tokens | — |
| Context window | 400K tokens | 1.0M tokens |
| Parameters | Not disclosed | Not disclosed |
| Weights | Closed | — |
| Free API (OpenRouter) | No | — |
| Released | Aug 2025 | Apr 2025 |
Our Verdict
GPT-5
Optimus AlphaRunner-up
Not enough votes to call it. On the specs, GPT-5 has the edge: bigger model tier, newer, major provider backing.
Too close to call
API pricing
Cost per 1M tokens
GPT-5
Input
$1.25
Output
$10.00
Optimus Alpha
Input
—
Output
—
Where to run it
2 hosts
Optimus Alpha
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
54%
Optimus Alpha uses 41.0x more bold
GPT-5
Optimus Alpha
65%Vocabulary63%
13wSentence Length18w
0.20Hedging0.55
0.2Bold7.7
4.6Lists5.7
0.00Emoji0.00
0.16Headings0.30
0.03Transitions0.27
Based on 16 + 10 text responses
Research
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