Tab exits stealth at a $300 million valuation with an AI agent that lives in your texts

Most AI assistants want you to download something new. Tab wants you to text it, the same way you’d text a friend who owes you a favor.

The San Francisco startup announced on Tuesday that it has emerged from stealth. It arrives with a $300 million pre-seed valuation, which is a remarkable number for a company whose product is still behind a waitlist.

What Tab actually does

Tab is building a personal AI agent that operates natively inside iMessage and WhatsApp. Users hand off tasks by sending a message, and the agent goes off and handles them.

The menu of chores is practical. Tab can book flights, place phone calls, draft emails and process payments.

That last one comes with a guardrail. Spending requires the user’s approval, so the agent cannot quietly decide you need a second espresso machine.

Under the hood, the agent runs its own computing environment. Think of it as having a desk of its own, rather than borrowing yours every time it needs to get something done.

It also remembers context across conversations. If you mentioned an aisle-seat preference last week, it shouldn’t need reminding this week.

The agent accepts a range of inputs, including text, photos, PDFs and videos. It can also make voice calls, which means it can theoretically sit on hold with your airline so you don’t have to.

Who’s behind it, and who’s paying

Tab was founded by Brennan Erbz, Stafford Schlitt and Ammar Amdani. Amdani is an investor and a co-founder of Adapt Ventures.

The round drew backing from SV Angel, Valar Ventures and American Spirit. That is a notable lineup for a company at the pre-seed stage, the earliest rung on the startup funding ladder.

For context, pre-seed valuations for comparable ventures typically land somewhere in the $15-25 million range. Tab’s figure sits an order of magnitude above that band.

Tab has not disclosed user numbers or revenue. Beyond the valuation, the financial picture remains private.

Anyone curious can join a waitlist at tab.bot.

Why a texting agent commands this kind of price

The AI assistant market is crowded with tools that answer questions. Fewer reliably go out and complete tasks on a user’s behalf.

Tab’s valuation reads as a signal of how much appetite investors have for that category. Backers appear willing to pay up early for teams that promise execution over conversation.

The distribution strategy also stands out. Building on iMessage and WhatsApp means Tab skips the hardest part of consumer software: convincing people to change their habits.