# proof. > proof. is a team of three in São Paulo, Brazil, that builds brands, websites and AI assistants for US businesses. Every package has a fixed price and a delivery date written into the agreement, and the client owns every file, the code, the domain and the hosting account. ## Packages and prices (US dollars) - [Brandbook](https://en.proofbrasil.com/packages/brandbook/): $1,998, 7 days. In seven days, we'll work out who you're talking to and how you should sound. Then we'll give you a logo, a typeface made for you, and a guide that keeps it all consistent. One fixed price. - [Brand + Website](https://en.proofbrasil.com/packages/brand-website/): $3,997, 15 days. We build your brand first, then a website on top of it. We write it, design it and put it live on your own domain. - [Brand + Website + AI Assistant](https://en.proofbrasil.com/packages/brand-website-ai-assistant/): $7,996, 30 days. In 30 days you get a new brand, a website, and an AI assistant that answers customer questions on your site and WhatsApp, books appointments, and passes people to you when they need a person. - [Website](https://en.proofbrasil.com/packages/website/): $2,299, 15 days. One page built on your brand, written by us, and running on accounts in your name. One fixed price. - [AI Assistant](https://en.proofbrasil.com/packages/ai-assistant/): $3,999, 15 days. An AI assistant on your website and WhatsApp, live in 15 days. It answers questions, books appointments and keeps your CRM up to date, and it hands off to you when a person should step in. ## Terms that apply to every package - On-time promise: If we go live later than the date in your agreement, even by an hour, your first six months of Care are free. The clock only pauses while we're waiting on you (approvals, photos, logins) or on outside companies like Meta. - Ownership: Your domain, your hosting and your code are in your name from day one. If you ever leave us, you take everything with you. - Payment: half to start, and half when the client approves the preview (for the Brandbook, when the files are ready). Bank transfer or card. - After launch (optional): Site Care is $250 a month and AI Care is $450 a month. Pay for the year and get two months free. - Upgrade credit: Starting with the brandbook? Add the website within 30 days and pay only the difference: $1,999 instead of $2,299. - Custom work, such as complex AI, has no list price. It starts with a discovery call. ## The team - Arthur builds brands. He's behind the branding of some of Latin America's biggest companies, and now works with brands around the world. - Murilo builds your website and everything behind it. He's spent more than five years making the software companies run on, and now builds interactive sites with AI inside. - Danilo builds AI for places where a mistake costs money, like factories and banks, for clients on four continents. - São Paulo is one to two hours ahead of New York. The team works in English and invoices in US dollars. ## Contact - Email: comercial@proofbrasil.com - WhatsApp: +55 11 98651-7086 - Start a project: https://en.proofbrasil.com/#comecar ## Pages - [Work](https://en.proofbrasil.com/work/): projects in industrial AI, banking, WhatsApp voice, branding and web. - [About](https://en.proofbrasil.com/about/): who the three people are and how they work. - [Journal](https://en.proofbrasil.com/journal/): articles for business owners. - [Who owns your website? Five things to check before you sign](https://en.proofbrasil.com/journal/who-owns-your-website/): Your domain, hosting, code, design files and data should be in your name. Here is how to check each one, and what to ask a studio before you sign. - [Case: proofbrasil.com, our own website](https://en.proofbrasil.com/journal/case-proofbrasil/): Our site for the Brazilian market, in Portuguese, English and Spanish: a photo that changes under the pointer, a page that signs its name, and work that scrolls sideways. - [Case: Operation Dan Day, a birthday staged as a mission](https://en.proofbrasil.com/journal/case-operation-dan-day/): A noncommercial birthday event. The invitation is a website that opens like a mission, with a briefing, squads, a map of the area and a way to confirm you're coming. - [Case: IRIS, industrial AI that asks a person before it acts](https://en.proofbrasil.com/journal/case-iris/): IRIS is an industrial AI platform with a 3D twin of the real place. Operators ask it questions, it goes to the sensor and answers, and a person approves what it wants to do. - [Case: IoTflix, a 3D showroom that turns a sales call into a proposal](https://en.proofbrasil.com/journal/case-iotflix/): A wall of IoT demos laid out like a streaming catalog. Each demo builds a store in 3D, puts sensors in it and shows the readings arriving live. - [Case: a new identity and a new website for Fuse IoT](https://en.proofbrasil.com/journal/case-fuse-iot/): How we rebuilt the look and the website of an industrial IoT company, so its technical work also shows in how it presents itself. - [Case: Beauty Exp., a clinic system on the web and on the phone](https://en.proofbrasil.com/journal/case-beauty-exp/): Scheduling, patients and treatment protocols for an aesthetics clinic, on the web, iOS and Android, with a day summary the clinic can ask questions to. - [What is a brandbook, and what should be in one?](https://en.proofbrasil.com/journal/what-is-a-brandbook/): A brandbook is the short guide that keeps your business looking and sounding the same everywhere. Here is what belongs in it, what you can skip, and how to tell if you need one. - [An AI assistant on WhatsApp for your business: what the rules allow in 2026](https://en.proofbrasil.com/journal/whatsapp-ai-assistant-rules/): Meta allows AI assistants that answer for your own business on WhatsApp, charges per message, and US law requires consent before you text customers. A plain summary for business owners. - [Fixed price or hourly? How to buy a website without surprises](https://en.proofbrasil.com/journal/fixed-price-website/): A fixed-price website works when the scope, the date and the payment terms are written down. Here are the seven things to get in writing before you pay a deposit. - [Is your website accessible? WCAG 2.2 AA in plain English](https://en.proofbrasil.com/journal/website-accessibility-wcag/): What WCAG 2.2 Level AA means for a small business website, how to test yours in ten minutes, and why accessibility overlays don't solve it. - [Hiring a design and web studio in Brazil from the US: how it works](https://en.proofbrasil.com/journal/working-with-a-studio-in-brazil/): Time zones, language, contracts and payments when a US business hires a studio in São Paulo. São Paulo is one to two hours ahead of New York.