Add to Chrome
Spell check & polish writing
Automatically fix spelling errors and improve the clarity of hand-written text.
Browser AI Assistant with On-Device AI & Voice
Write, summarize, edit text and use voice across the web with on-device AI when available, or connect your preferred AI provider.
Install App
* Requires Google Chrome to be installed. Works offline.
AI writing assistant
Rewrite text directly where you are already working with just a button.
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On-Device AI
Ceres uses AI technologies that run locally on your computer whenever possible, unless you choose to connect your own AI provider.
Collapse or expand any text
Collapse text while keeping the original meaning, or expand it with more detail and context whenever you need it.
Shape your words with your voice
Press the 🪄 Command, give your instructions in your own language and lets it transform anything as you want.
Voice text refactoring
Just say, “Sort my list from A to Z,” and your product list becomes professionally sorted, with bullets if you prefer.
Write with your voice
Press the 🎙️ speak button to talk instead of typing.
Listen aloud
Listen to AI suggestions or selected text in your language.
Custom AI writing buttons
Save your repeated writing instructions as reusable buttons and run them in one click.
Save your best prompts
Improve prompts for AI apps, translate text, or create your own custom actions.
Use them anywhere
Run your own writing action on selected text directly inside the page.
Built-in reasoning & memory
Ceres doesn't just answer; it thinks about your task and remembers your past preferences.
Deep reasoning
Ceres uses advanced reasoning steps to understand complex requests and provide highly accurate results.
Long-term memory
It remembers your preferences, rules, and previous instructions so you do not have to repeat yourself.
Context-aware AI sidebar
Use any open page as context to carry out thorough research.
More than a chat
Drop local files or selected open tabs directly with AI chat.
Complete article writing
Generate full-length articles with citations and references using rich browser context.
Use your browser context
Let Ceres work with the pages, tabs, and files you choose to share for your request.
Read your page and tabs
Use context from the current page and open tabs to summarize content and help with your task.
Explore your context
Search open tabs and local files you choose to share when they are relevant to your task.
Use on-device AI to work on your code
Open a project folder, ask Chrome built-in AI for a change, review the suggestion and apply it directly from the browser.
Code with Gemini Nano
Use the local model managed by Chrome to understand code and prepare focused changes for files in the folder you select.
Review before anything changes
See the suggested changes first, then choose whether to apply them to your local project.
Chrome built-in AI works only on supported desktop devices and Chrome versions. Hardware, storage, language and model availability requirements apply. The model may need to be downloaded before first use.
Ceres gives more power to your browser
Ceres is powered by your favorite models, including GPT, Claude, Gemini, Mistral, Mercury, DeepSeek, Kimi, and more.
We do not resell AI subscriptions. Ceres lets you connect the provider you choose directly.
Choose your AI provider
Connect a supported cloud provider, Ollama, or LM Studio directly.
Direct connection
Ceres connects directly to your selected provider, with no extra service in the middle.
Supported models
Use on-device AI for fast writing actions, or connect GPT, Claude, Gemini, Mistral, Mercury, DeepSeek, Kimi, and more when you need more power.
Browser writing and reading tools
Write, read, listen, and use page context without moving the work somewhere else.