AI-first overlay for Windows

Your AI agent,
one hotkey away.

Press Alt+Space anywhere on Windows. Ask AI, read your clipboard, act on your behalf — without leaving your current app.
Agent tools. Streaming answers. Your keys, your models.

Ask anything...
Google·gemini-3

Everything you need, nothing you don't.

A focused AI tool that does one thing perfectly — answers your questions without breaking your flow.

Lightning Fast Overlay

Alt+Space opens an instant overlay above any app. Type your question, get a streaming AI response. No window switching, no tab hunting.

Bring Your Own Keys

Use your existing API keys for OpenAI, Claude, Gemini, Grok, Mistral — or run local models with Ollama and LM Studio. Zero middleman.

Privacy First

Your API keys are encrypted and stored locally on your machine. No analytics, no telemetry, no data leaves your PC.

Beautiful Responses

Full markdown rendering with syntax-highlighted code blocks and real-time token streaming. Answers look as good as they read.

Conversation History

Every chat is saved locally on your machine. Browse, revisit, or delete past conversations anytime — your context is never lost.

Customizable Hotkey

Alt+Space by default, but you can remap it to any key combo. Record or type your preferred shortcut — it applies instantly.

Up and running in 30 seconds.

No accounts, no subscriptions, no complicated setup. Just install and go.

01

Download & Install

10-second setup. Lightweight Tauri app under 10 MB. No bloatware, no sign-up required.

02

Add Your API Key

Paste your key for any supported provider. One-click validation confirms it works.

03

Alt+Space → Ask → Done

From anywhere on your desktop — the AI comes to you. Streaming responses, right where you need them.

Compatible with every major model.

Cloud or local — pick the model that fits your workflow and budget. Switch anytime.

OpenAIGPT-5.2, GPT-4.1, o3/o4-mini
AnthropicClaude Opus 4, Sonnet 4
GoogleGemini 3, 2.5 Pro/Flash
xAIGrok 4.1, Grok 3
MistralLarge, Medium, Small
OllamaLocal models
LM StudioLocal models

What's next

This is just the beginning.

We're building toward something bigger.

Frequently asked questions

Everything you need to know about ZupFlash.