Sel-Sirius, SelGPT’s most capable model
Sel-Sirius is for work that has to be right the first time. It runs on the model ranked #1 on the Artificial Analysis Intelligence Index, and it’s included in SelGPT Plus.
Why Sel-Sirius
In September 2026 the model behind Sel-Sirius scored 58 on the Artificial Analysis Intelligence Index, the highest of any model tested. Other chat apps put models at this level behind $100 to $200 plans; SelGPT includes it in Plus.
What Sel-Sirius is good at
- Contracts, reports and other documents where a missed detail is costly.
- Hard coding problems, architecture decisions and code review.
- Careful writing: proposals, applications and anything you publish.
Try asking
- “Find the risky clauses in this contract.”
- “Review this system design and tell me where it will fail at scale.”
- “Turn these notes into a funding proposal.”
Plans
Sel-Sirius draws from your monthly allowance fastest: about 80 messages a month on Plus, 400 on Pro 5× and 1,250 on Pro 15×. See SelGPT pricing.