Stella

Learn more

Stella, in detail.

Your personal AI assistant, available in your browser, desktop app, and mobile app. Ask once, keep talking, and Stella figures out which agent, app, file, browser, model, or tool should handle the work.

Background agents can handle independent work and report progress inline without making you manage separate threads.

Open Stella

Free. No credit card, no trial.

What Stella is

One assistant, wherever you are

Stella works with your files, apps, and browser to help you get things done.

You can use Stella for research, writing, spreadsheets, PDFs, Word documents, browser tasks, computer control, image generation, video and 3D workflows, media prompts, scheduling, reminders, dictation, realtime voice, and connected apps.

Keep your work in one conversation, whether you use Stella in your browser, on your desktop, or on your phone.

One chat

You keep talking in the same place

Most agent products make you choose a mode, start a new thread, pick a specialist, then remember where everything went. Stella keeps the top-level experience continuous.

Behind the scenes, Stella can split work into smaller jobs, run specialized agents, keep track of active threads, and bring the result back into the conversation. Orchestrator mode is the default, so you stay in one conversation instead of becoming the project manager for your assistant.

Capabilities

What Stella can do

Use your computer

Inspect the screen, click, type, open apps, navigate windows, and work with what is actually in front of you.

Use the web

Browse, search, read pages, fill forms, and use browser context when it helps.

Work with files

Read, write, organize, summarize, and transform documents, spreadsheets, PDFs, presentations, images, and generated outputs.

Create media

Help make images, video, audio, 3D assets, small apps, games, mockups, and visual artifacts. Image, video, music, and 3D generation come with every paid plan.

Listen and speak

Use in-app dictation, OS-wide dictation, read-aloud, and realtime voice. Wake-word activation is optional. Dictation, read-aloud and wake word are on every plan; realtime voice comes with every paid plan.

Run routines

Create reminders, recurring check-ins, scheduled work, and automations from plain English.

Connect apps

Use supported services, including the Stella mobile app, Google Workspace, and Store-backed integrations.

Choose your model

Use Stella's managed provider, bring your own keys, use local models, pick OpenRouter-style options where supported, or select Claude Code as the engine.

Access

Ways to reach Stella

Browser

Open Stella in your browser to chat, start tasks, and work with files. No installation needed.

Desktop app

Use Stella on macOS, Windows, or Linux, with access to your computer and desktop apps.

Mobile app

Chat and manage tasks from your phone. Connect the desktop app when you want Stella to work on that computer.

Quick access on desktop

Capture, chat, add context, or start voice from the app or page you are already using.

Mini window on desktop

Keep a smaller Stella window nearby for quick asks without taking over your screen.

Voice and dictation

Dictate into Stella or talk in realtime. The desktop app also supports dictation into other apps.

Privacy

Your privacy

Read our Privacy Policy for details on how Stella handles your information and the choices available to you.

Models

Use Stella, BYOK, local models, or Claude Code

Stella has a managed path for convenience and a provider-control path for people who want to bring their own providers.

Stella Provider lets you start using strong models without setting up accounts everywhere. Requests pass through Stella's infrastructure so billing and limits can work. Responses may be buffered briefly for stream recovery, and providers may retain submitted data under their policies.

You can also add your own provider credentials, use local runtimes, and use Claude Code directly as the assistant engine. Provider and engine options depend on the client you use.

Your assistant, wherever you need it.

Use Stella in your browser, desktop app, or mobile app.

Open StellaFree. No credit card, no trial.