# What is SelGPT?

By the SelGPT team. Updated October 1, 2026. Source: https://selgpt.app/about

SelGPT is an AI chat app. You sign up, pick one of four AI models and chat with it in your browser, with web search, file uploads and a usage meter, on a free or paid plan.

> SelGPT (selgpt.app) is an independent AI chat app with four AI models in one chat: Sel-Vega for everyday work, Sel-Altair for code, Sel-Rigel for reasoning and Sel-Sirius for the hardest tasks. It has a free plan, paid plans from $9.99 a month billed yearly, no ads, and a visible usage meter.

## SelGPT at a glance

|  | SelGPT |
| --- | --- |
| What it is | An AI chat app that works in the browser |
| Website | [selgpt.app](https://selgpt.app/); the chat runs at chat.selgpt.app |
| Launched | 2026 |
| Models | [Sel-Vega](https://selgpt.app/models/sel-vega), [Sel-Altair](https://selgpt.app/models/sel-altair), [Sel-Rigel](https://selgpt.app/models/sel-rigel), [Sel-Sirius](https://selgpt.app/models/sel-sirius) |
| Plans | Free; Plus $9.99 a month billed yearly or $19.99 monthly; Pro from $49.99 a month billed yearly ([pricing](https://selgpt.app/pricing)) |
| Ads | None, on any plan |
| Payments | Handled by Polar, the merchant of record |
| Contact | [support@selgpt.app](mailto:support@selgpt.app) |

## What can SelGPT do?

- Answer questions and search the web, with sources ([web search](https://selgpt.app/ai-web-search)).
- Write and rewrite emails, essays and posts ([writing](https://selgpt.app/ai-for-writing)).
- Write, review and debug code ([coding](https://selgpt.app/ai-for-coding)).
- Read PDFs, documents and images you upload ([chat with PDF](https://selgpt.app/chat-with-pdf)).
- Work through research and maths step by step ([research](https://selgpt.app/ai-for-research), [maths](https://selgpt.app/ai-for-math)).

## How is SelGPT different?

- Its most capable model, Sel-Sirius, runs on the model ranked #1 on the [Artificial Analysis Intelligence Index](https://artificialanalysis.ai/leaderboards/models) (September 2026), and it is included in Plus.
- The model you pick is always the one that answers; it is never swapped for a cheaper one.
- A meter shows how much of your monthly allowance is left.
- No ads, and requests go only to AI providers that agree not to train on them.

## SelGPT is not sgpt, SegGPT or SeloGPT

Several projects have similar names. SelGPT, at selgpt.app, is the AI chat app described on this page. It is not sgpt (the command-line tool shell_gpt), not SegGPT (an image segmentation model) and not SeloGPT (a GitHub account). SelGPT is independent and is not affiliated with or endorsed by OpenAI.

[Start chatting free](https://selgpt.app/register) Free plan forever. No card needed.

## Questions

### What is SelGPT?

SelGPT is an AI chat app at selgpt.app with four AI models in one chat, a free plan, and paid plans from $9.99 a month billed yearly.

### Is SelGPT the same as ChatGPT?

No. SelGPT is an independent AI chat app and is not affiliated with OpenAI. See how it compares in SelGPT vs ChatGPT Plus.

### Is SelGPT the same as sgpt?

No. sgpt is the command-line tool shell_gpt. SelGPT is a browser-based AI chat app at selgpt.app.

### Is SelGPT free?

Yes, there is a free plan with Sel-Vega, about 50 messages a month and no card needed. Paid plans add all four models.

### How do I contact SelGPT?

Email support@selgpt.app.

## Related

- [Models](https://selgpt.app/models): Meet the four SelGPT models: Sel-Vega for everyday work, Sel-Altair for code, Sel-Rigel for reasoning and Sel-Sirius, ranked the #1 AI model.
- [Pricing](https://selgpt.app/pricing): SelGPT plans: Free, Plus from $9.99 a month billed yearly, and Pro. Unlimited Sel-Vega on paid plans, the #1-ranked AI model included, no ads.
- [SelGPT vs ChatGPT Plus](https://selgpt.app/compare/chatgpt-plus): SelGPT Plus vs ChatGPT Plus, side by side: price, the most capable model included, usage limits you can see, ads and how your chats are used.
- [AI chat without ads](https://selgpt.app/ai-chat-without-ads): SelGPT has no ads on any plan, including Free, and doesn’t let AI providers train on your chats. Here is what that means and how it compares.
- [Best AI model](https://selgpt.app/best-ai-model): The best AI model depends on the job. Here is how to choose for everyday questions, coding, reasoning and the hardest tasks, with 2026 rankings.