Last updated 08-09-2026
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MultitaskAI
MultitaskAI is a browser-based AI agent workspace that connects to OpenAI, Anthropic, Google Gemini, and OpenRouter using your own API keys. You chat, compare models in split-screen, queue messages, upload files, and build custom agents without sending data through a middleman subscription. A free demo at app.multitaskai.com unlocks every feature, but sessions reset until you buy a license.
Most chat wrappers charge monthly and mark up model access. MultitaskAI sells a one-time lifetime license and lets you pay providers directly for tokens. That matters if you already have API keys and want split-screen comparisons, conversation forking, background completions, and optional self-hosting on static file hosting.
Developers use it to test prompts across models, researchers compare answers side by side, and privacy-minded teams self-host the static build. The lifetime plan adds cloud sync across five devices, persistent chats, and priority support for a single payment of 99 euros.
Connect OpenAI, Anthropic, Gemini, and OpenRouter with your own API keys
Compare two models side by side in split-screen with conversation forking
Queue messages while a response is still generating in the background
Build custom agents with files, prompts, and per-model temperature settings
Self-host the static app on Netlify, Vercel, GitHub Pages, or any file host
Lifetime license is 99 euros with 5 device activations and cloud sync
One-time license avoids another monthly AI subscription on top of API costs.
Split-screen and queue features suit power users comparing model outputs.
Self-hosting and local storage keep chats off third-party servers by default.
You must supply and pay for your own OpenAI, Anthropic, or Google API keys.
Free demo does not save conversations between browser restarts.
What is MultitaskAI?
MultitaskAI is a browser chat interface for AI models like GPT, Claude, and Gemini. You bring your own API keys, manage chats and agents in one place, and can compare models in split-screen.
Does MultitaskAI require a subscription?
MultitaskAI sells a one-time lifetime license with no monthly fee from MultitaskAI itself. You still pay your model provider directly for API usage.
How much does MultitaskAI cost?
MultitaskAI lifetime license costs 99 euros as a one-time purchase and includes five device activations plus lifetime updates. A free demo is available at app.multitaskai.com.
Can I try MultitaskAI before buying?
Yes. MultitaskAI demo at app.multitaskai.com unlocks all features, but your chats reset when you restart the session until you activate a paid license.
Where is MultitaskAI chat data stored?
MultitaskAI stores conversations locally in your browser by default. Paid users can enable MultitaskAI Cloud sync, and self-hosters can deploy the static build on their own hosting.
Can I self-host MultitaskAI?
Yes. MultitaskAI lifetime license holders can download the static build and host it on providers like Netlify, Vercel, or GitHub Pages with no backend server required.