Seb AI Inc. makes Seb AI, an assistant you can chat with today, and SebAuth, the account system that ties our products together. Seb OS, our operating environment for mobile and PC, is still in progress.
Every model below is available in Seb AI. Pick the one that fits the task, or leave it on S4.1.
Open Seb AISeb AI S4.1Flagship
Everyday use, research, writing, and image generation
Our current flagship. Handles long conversations, image generation, and web-grounded answers in a single model.
Seb AI S3
Multi-step reasoning and planning
An experimental model that spends more time thinking through a problem before responding.
Seb AI Coder
Debugging, refactoring, and explaining code
Tuned for reading, writing, and debugging code across common languages, including Luau for Roblox.
Seb AI S2
Quick questions and low-latency tasks
A smaller, faster model for short, direct answers.
Seb AI S1 Pro
Technical analysis and reports
Focused on technical explanations and structured output.
Seb AI S1
General writing and Q&A
The original Seb AI model. Balanced, thorough, and still available.
What we have shipped and what we are still working on. Seb OS is not released yet; SebCheckout comes bundled with SebAuth rather than as a separate product.
Our assistant. Chat with the S1 to S4.1 model family, generate images, search the web, use voice input, and create API keys.
An operating environment for mobile and PC with Seb AI built in. Still being developed; not yet released.
Sign-in and account management for Seb AI Inc. products. One account works across Seb AI and future releases.
A checkout tool bundled with SebAuth for handling purchases and plans tied to a Seb account.
Use Seb AI models from your own apps. Generate a key from inside Seb AI and read the docs to get started.
A creative workspace for images and Roblox scripting, growing out of our start as Sebestianmek on Roblox.
October 2026
S4.1 replaces S4 as the flagship in Seb AI, with improvements to image generation and web-grounded answers.
September 2026
Checkout is now part of SebAuth, so one account covers sign-in and purchases across our products.
August 2026
Seb OS is in development for mobile and PC. No release date yet; we will share more as it comes together.
June 2026
Seb AI now has a dedicated address. The main site at sebaiinc.xyz covers the company and its projects.
Seb AI Inc. started as Sebestianmek on Roblox and grew into a small company building AI products. Today that means Seb AI, our assistant; SebAuth, which handles accounts and includes SebCheckout; and Seb OS, which is still being built for mobile and PC.
We would rather ship something that works than announce something that does not, so this page only lists what exists or is actively in progress.