Journal
Notes from
inside the tunnel.
Early access to TunnelGPT is open
Starting today you can reserve a workspace in the AI superapp that puts every major model behind one chat. Here’s what’s in the first wave and how invites work.
Read the announcement →Why one model is never enough
Every model has a personality — strengths, blind spots and habits. The people getting the most out of AI stopped picking a favourite a long time ago.
Introducing Compare: one prompt, every perspective
Send a single prompt to up to four models at once and read the answers side by side. Rolling out to beta members today.
A field guide to picking the right model for the job
Frontier, fast, long-context, open-weight, image, video — a practical map of which kind of model to reach for, and when.
Memory now travels with you between models
Tell TunnelGPT something once and every model knows it — your stack, your tone, your projects. You stay in control of every line.
Prompts that travel: how to write once for every model
Some prompts sing in one model and fall flat in the next. Five habits make your prompts portable.
Meet Auto: the model picker that picks for you
Forty models is a superpower — and a lot of choices. Auto reads each message and routes it to the model most likely to nail it.