Hannah Berkowitz

Life happens in person

[Mitchell Troyanovsky @mitch_troy]

Enjoy me riffing with @mattturck on why the founding fathers were the og context engineers

[Mitchell Troyanovsky @mitch_troy]

Excited to announce the Basis End-to-End Tax Platform, the first production deployment I’m aware of built around truly proactive agents.

By proactive agents, I mean agents that operate against goals and jobs without needing a human to constantly give them work.

I think this is the next logical evolution of long-horizon agents.

Basis agents take responsibility for the entire first pass. They gather the required information and evidence from clients, prepare and review the return, and bring in accountants when an issue requires judgment.

The agents keep the work moving. Accountants can inspect every step and control every decision.

[Mitchell Troyanovsky @mitch_troy]

Out of the box, long-horizon agents struggle to accurately perform end to end work in the real economy (outside of coding) because those tasks are not easily verifiable, the data is hard to scale, and going from inputs to real outcomes can actually take many days.

Even if you had a reliable way to verify outcomes at scale (and weren’t bothered by the multi-hour iteration loops), the sheer volume of decisions by the agent that occur in a multi-hour job makes it hard to know whether performing well will generalize to production.

Over the last two years at @trybasis, we've been solving this problem by supervising the process our agents take to get to outcomes, rather than just looking at whether the outcome itself is correct.

We think this is the key to building production agents at scale.

It's what has allowed us to run agents in production that operate for hours, sometimes days, and reliably perform tasks like entire complex tax returns end to end.

Today, alongside @braintrust, we're open sourcing a standard for defining, evaluating, and eventually rewarding agent behaviors.

Thread below with all the details on how we’re scaling behaviors to close the loop for long-horizon agents.

[Mitchell Troyanovsky @mitch_troy]

It's awe-inspiring to pause and think about how economically complicated the modern world is and how absurd it is that it works at all. (I always think back to the @collision tweet on passion projects).

You have organizations of thousands of people, say @SpaceX, that perform millions of economic events annually and somehow that information gets compressed into legible, structured data that is TRUSTED enough by investors, banks, the IRS etc. to make billion dollar decisions.

Thats possible because of the hard-working folks who account for, then reconcile, then double check (then hire other people to audit) all of that activity.

Given the complexity about to dawn on the world as agents become economic participants, we're going to need accounting and accountants more than ever.

[Hannah Berkowitz @hannahberko]

Someone bring these puppies back

[Basis @trybasis]

https://t.co/MdmfhgOdZV

[Hannah Berkowitz @hannahberko]

@mitch_troy she’s so CUUUTE

[Hannah Berkowitz @hannahberko]

If you are a single Jewish woman in New York looking for a husband, you will find him in the Legends Suite at regular season Yankee games

[Hannah Berkowitz @hannahberko]

@davieball @mitch_troy hahahaha we’re testing with a smallish pilot group right now so still sussing out what people will need

[Cairo Smith @cairoasmith]

Pete Hegseth to Claude:

[Hannah Berkowitz @hannahberko]

Feeld or Grindr or something should use it for a brand activation

[Hannah Berkowitz @hannahberko]

This defunct former book-by-the-hour love motel right on the West Side Highway is the biggest waste of real estate in NYC

[Mitchell Troyanovsky @mitch_troy]

Excited to announce this milestone.

We are deploying long-horizon agents at scale that can do real work in the real economy. Our agents can already operate reliably for hours at a time and I expect that to be days by the end of the year.

We can barely keep up with demand. If you want to come join and work at the frontier for the most intense, fast-paced couple years of your life, send me a note.

[Basis @trybasis]

We've raised $100m at a $1.15b valuation from @Accel, @GVteam, and existing investors to accelerate deployment of the most capable and accurate accounting agents across CAS, tax, audit, and advisory.

Basis is used by 30% of the Top 25 accounting firms and dozens more across the Top 150.

Today we're announcing the first accounting agent to complete a business tax workbook end-to-end.

Our focus on production-grade, long-horizon agents means that 12 months from now, the work Basis handles will make even this look routine.

We're looking for a few very intense people who want to build at the frontier.

[Zak Kukoff @zck]

Crazy for New York to announce ADHD genocide during a blizzard

[Hannah Berkowitz @hannahberko]

https://t.co/BrYkFwH8MS

[Hannah Berkowitz @hannahberko]

@mitch_troy “there’s a new mental illness and I have it”

[Basis @trybasis]

We're excited to continue collaborating with @OpenAI to build frontier accounting agents that can operate autonomously and accurately.

Learn more about how we worked closely to ensure GPT-5 can support challenging long-running workflows.

More to come soon.

[Basis @trybasis]

We’ve raised $34m to accelerate our goal of equipping every accountant with a team of AI agents.

Led by Keith Rabois at Khosla Ventures with Nat Friedman & Daniel Gross and continued participation from Better Tomorrow Ventures, BoxGroup, and Avid Ventures.

Excited to also welcome:
Aaron Levie, Adam D’Angelo, Amjad Masad, Azeem Azhar, Clem Delangue, Claire Hughes Johnson, Jack Altman, Jeff Dean, Jeff Wilke, Kyle Vogt, Larry Summers, Lenny Rachitsky, Michele Catasta, Noam Brown and others

[Isabel🌻 @isabelunraveled]

a non-trivial amount of personal growth comes from noticing when you are reaching for distraction and choosing to stay with the feeling you are trying to get away from instead of indulging the impulse to escape it.