Turnstone
New accelerator entry · 2026-01-19 · the record
In their words
Turnstone is the AI workspace where your agents already know you. Connect your apps (e.g. email, calendar, Slack, Drive) and your local folders. Turnstone turns all of it into your second brain and continuously updates it. Spin up agents (e.g. chief of staff, research, GTM) that all share that brain, so you stop re-explaining yourself and start getting real work done. It all lives on your machine and runs on any model you already pay for. Ask your agent once, and it's done.
What the record says
- One of 193 companies held here in B2B.
No investor is drawn from a Form D — the form states how many invested and never who. The one investor on this graph is named because a batch has exactly one.
The full profile
Source Check, INVEST, RECRUIT and Press Requests on Turnstone
- Source Check — verify what Turnstone states, against the registers that hold it.
- INVEST — size up this company on the figures its record states.
- RECRUIT — see who is already on the team.
- Press Requests — connect with Turnstone for a story.
You land back on this company when you are in.
Not ready to upgrade? Keep this one in view instead.
Watchlist TurnstoneYou get an alert in MentionFox the next time this company shows up.
Is this you?
If you're behind Turnstone: acceptance into a YC batch is one of the few weeks a young company gets looked up by people who matter — investors, other founders, press. FoxPlug turns the commits, deploys, and releases you're already making into that story automatically, so anyone who looks finds something current. FoxChat puts a guide on your own site so the people YC's own page just sent you don't read one line and leave.
Sourced from the company's Y Combinator directory entry.