Your AI companion,
always with you.
Meet Bumi, a warm, living digital bear who shares your browser. Unlike rigid, robotic bots, Bumi feels emotionally present-reacting, listening, and transforming productivity with natural voice interactions, smart search, and calendar integration.
Experience Bumi in Real-Time
Try out Bumi's browser abilities right here. Click a command chip below or chat with him to see how he reacts and runs smart actions in his simulated browser tab.
Action Chips
Trigger complex browser actions with a single click. See how Bumi leverages tab controls and calendar commands.
Dynamic Interaction Logs
Productivity Magic & Companion Vibes
BwithU packs state-of-the-art AI into a warm, gentle presence. It's helpful without being intrusive.
AI Real-Time Voice
Powered by xAI's high-speed voice engine. Converse naturally with under 50ms latency. Speaks with standard emotional warmth, pauses, and friendly inflection.
Brave Search Integration
Whenever you ask current, real-time facts, Bumi automatically uses his Brave search integration to scan the web and answer with reliable citations.
Browser Context Layer
Bumi is fully context-aware. He understands the text of your current tab and is ready to summarize articles, write reviews, or help research options.
Smart Calendar Invites
No more toggling forms. Type or say what meeting you need, and Bumi drafts a prefilled Google Calendar invite with single-click OAuth and Google Meet.
Active Companion Vibes
Bumi reacts dynamically to your movements. He tilts his head when you hover, yawns if idle, waves on drag, and blinks organically.
100% Privacy Focused
Your API keys are stored locally on your device. Bumi only reads tab content when you ask him to, and never sells or uploads browser logs.
✨
⭐
✨
Tune Bumi's Current Mood
Bumi is built to feel alive and responsive. Switch between his core emotional behaviors to preview his glowing accent changes and speech themes.
Idle / Warm Accent
Bumi is in his natural resting state. He undergoes tiny breath movements, occasional winks, and is content to float gently beside your page.
The BwithU Philosophy
Adhering to our core guidelines: Bumi is built to feel helpful, warm, and futuristic. Never cold, never robotic, and never overwhelming.
Warm
Designed with friendly colors, speech bubble greetings, and conversational ease.
Futuristic
Sleek glassmorphism overlay widgets, real-time voice, and context-aware capabilities.
Calm
Gentle and helpful. Exists quietly in the corner, appearing only when called upon.
Emotionally Present
Tiny weightless micro-animations and breathing states reflect life and companion vibes.
Common Questions
Everything you need to know about bringing Bumi into your workflow.
BwithU links directly to the xAI Grok API. By entering your personal xAI API key locally, the extension establishes a high-speed secure WebSocket connection directly with Grok's Voice server, facilitating ultra-low latency real-time voice interaction.
Absolutely not. BwithU is 100% private. It operates on a strict user-triggered context model. It only gathers page text context when you specifically query Bumi, and all data and API secrets are stored locally within Chrome's secure storage. No data is sent to external servers other than directly to xAI.
Brave Search uses a standard Brave Search developer key to fetch search results. For Google Calendar, BwithU uses built-in Chrome identity OAuth to request single-click permissions, letting you create actual calendar invites without typing fields.
Yes, BwithU is open-source. Since you provide your own xAI API key and Brave Developer key, you only pay exactly what you consume directly to the API providers, with zero markups or subscription fees from BwithU.