Every AI model in one place
Every model.
One subscription.
Stop paying for Claude, ChatGPT and Gemini separately. Get them all here — with web search, a legal workspace with official court data, 370+ expert agents, vision, PDF, voice and image generation.
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How it works
From zero to your first result in under a minute.
Create your free account
No card. In seconds you're chatting with the best AIs.
Pick a model or activate an agent
From the fastest to the smartest — there's a right model for every task.
Chat, attach, generate images and talk
All in one place, real-time answers, automatic history.
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Not just another AI chat
Features you won't find together anywhere else.
Auto Mode
The AI picks the best model for each question — code, writing or reasoning. You just ask.
Compare side by side
The same question across several models at once. See instantly which one answers best.
Memory that knows you
The AI remembers who you are between conversations: your profession, style and preferences.
Conversations everywhere
History synced between phone and computer — and you can install it as an app. Pick up where you left off.
Full legal workspace
A chat dedicated to law with guided shortcuts and case lookups in Brazil's official court database (CNJ).
Connected to the real world
Web search with cited sources + 10 tools: court cases, company records, financial indices, official gazettes, weather and more.
See it working
Three proofs, one from each part of the product. Nothing here is staged: the tool notices and the citation check are the ones the app shows.
Where to use it
One subscription, three places.
Editors
Extension published on the VS Code Marketplace and Open VSX — which covers Cursor, Windsurf and VSCodium.
Terminal
CLI to use Brains without leaving the terminal, on the same plan.
Browser
Chat, legal area and tools, nothing to install.
There is no JetBrains or Eclipse extension yet. Docs
Every citation is checked — or flagged
Each answer goes through a deterministic check: digests and statute articles are verified one by one against the official text. What does not exist gets a warning instead of slipping through.
The best models in the world
From the global AI leaders. Switch models in the same chat, no extra account needed.
370+ specialists ready to work
Activate by command on Pro, or let the AI detect and choose automatically on Pro Max.
Lawyer
LawAnalyzes contracts, spots unfair clauses and drafts legal documents with precise technical language.
Senior Dev
DevGenerates, reviews and explains code in any language. Finds bugs, suggests refactors and proposes architecture.
Data Analyst
DataReads spreadsheets and CSVs, uncovers hidden trends and builds executive reports in seconds.
Business Consultant
BusinessRuns SWOT analysis, builds business plans, assesses pricing and spots market opportunities.
Copywriter
MarketingWrites copy that converts: headlines, emails, ads, posts and scripts in the right brand voice.
Personal Tutor
StudyExplains any concept from basics to advanced, creates exercises, grades answers and adapts the pace.
Data Architect
DevModels schemas, writes optimized queries, proposes indexes and reviews migrations for any database.
Content Writer
ContentProduces articles, newsletters, video scripts and SEO-friendly captions with consistent tone.
Automation Specialist
AutomationBuilds Python scripts, advanced formulas and workflows to eliminate repetitive tasks.
Automatic activation available on the Pro Max plan.
See all agentsEverything an AI chat needs
Modern features, in a clean and fast interface.
All the models
A closed catalog with selected Claude, GPT, Gemini, Grok, Kimi, DeepSeek, Llama and other models.
370+ skills & agents
Ready-made abilities that turn the AI into a specialist in your field — in English, Portuguese and Spanish.
Vision & PDF
Send images and PDFs (even scanned, with OCR). The AI reads, describes and analyzes.
Image generation
Describe it and get high-quality images generated right in the chat.
Two-way voice
Talk with the microphone, listen to the answers. Natural conversation with AI.
Private & secure
No prompt tracking. Export or delete your data anytime, with one click.
Connected to the real world
Web search with sources + 10 tools: court cases, company records, financial indices, official gazettes, weather…
Export to Word & PDF
Download any answer as .docx or .pdf, ready to deliver.
Share & install
Public links to share conversations, and install it as an app on your phone and computer.
Frequently asked questions
Which models are available?
The curated catalog has 60 models from leading labs and only shows options actually offered by Brains. Free uses GLM 4.7; Pro unlocks models such as Claude Sonnet 5, GPT-5.6 Luna and Gemini 3.5 Flash; Pro Max adds Claude Fable 5, Claude Opus 4.8, GPT-5.6 Luna Pro and Grok 4.5.
What are skills and agents?
Ready-made abilities that turn the AI into a specialist: lawyer, senior dev, data analyst, copywriter, tutor… 370+ in the library, working in English, Portuguese and Spanish. On Pro you trigger them by command; on Pro Max the AI detects the context and activates them itself.
Can the AI access the internet and real data?
Yes. Turn on web search for up-to-date answers with cited sources, and the connected tools for official data: court cases (CNJ/DataJud), company records, postal codes, financial indices, official gazettes, weather and more — available on every plan.
Is it useful for legal work?
It's one of our main focuses. The legal workspace has a dedicated chat, guided shortcuts (complaints, contracts, opinions, appeals, deadlines), case lookups in Brazil's official CNJ database and PDF case-file uploads. Results download as Word or PDF.
How does premium usage work?
More powerful models consume more of your premium usage; free models consume none. Premium usage renews every 5 hours with a weekly cap. When the window resets, you can still use the free models or buy a one-time top-up.
What are one-time top-ups?
One-off purchases (no subscription) that stay in your account and extend your premium usage when the 5-hour window runs out. Available on Pro and Pro Max. They never expire.
Do I need a card to start?
No. Free doesn't ask for a card. You only subscribe when you want more models and more usage.
Can I cancel anytime?
Yes. Monthly subscription, cancelled from the billing portal in one click. No lock-in.
Start now, no card
25 free messages every day. No expiration date. When you want more, just subscribe.