SandboxSandbox started as an internal tool. Our team was paying for ChatGPT Plus, Claude Pro, Midjourney and two more subscriptions each, switching tabs a dozen times a day to find out which model actually answered a given question best. The tool that fixed that for us became the product.
What we build
A Windows app that runs GPT-5, Claude, Gemini, Grok, DeepSeek, Llama, Mistral and 20+ image, voice and video models side by side, on one subscription. We buy enterprise inference capacity directly from OpenAI, Anthropic, Google, xAI and Mistral, and run open-weight models on our own GPU clusters — so nothing about the models themselves is different from using them directly. What's different is that you can compare them, route work to the cheapest one that's good enough, and pay one bill instead of five.
Why Windows first
We picked one platform and tried to make it genuinely good rather than spreading thin across three. Windows 10/11 covers the majority of our early users' machines. A macOS build is in active development — join the waitlist and we'll email you the day it ships.
Where we are
Small team, based remotely, serving individuals and small teams who live in AI tools every day. We're not backed by any of the model providers we route to — that's deliberate, so our incentive stays aligned with picking the best model for your task, not the one we have a stake in.