Alt Capital

Alt Capital is an early-stage venture firm.

[Sam Blond @samdblond]

We're also announcing $35M in funding. @foundersfund led our Series A. @humancapital led our incubation. With participation from many of the greatest investors and people in the world like @jasonlk , @patrickc , @garrytan , @_altcapital , @mantisVC , @Saga_Ventures , @Antifund , @NicoRosberg and more

[Anker @ankerbachryhl]

Excited to reintroduce Parahelp with a new website, use case library, and customers, including the teams at Cursor, Speak, and Fyxer.

https://t.co/Yw7EeyEmNV

[Rogo @RogoAI]

We’re excited to announce our $75 million Series C led by @sequoia, with participation from @jpmorgan, @WellsFargo, @ThriveCapital, @khoslaventures,@BoxGroup, Mantis VC, Positive Sum, Stonecroft Management & @_altcapital to build AI that makes the best financial professionals smarter, faster, and more ambitious.

There’s a long road ahead and we’re grateful to our clients, team, and investors for their partnership as we set out to transform finance. https://t.co/5uzTVhX3jK

[Anker @ankerbachryhl]

Today, we’re releasing the Parahelp Assistant.

It’s an AI engineer that makes it ten times faster for our customers to ship updates to their Parahelp support agents!

@parahelp_ai

[Antares @AntaresNuclear]

We just raised $96M to build and deploy our microreactors.

This round powers the work ahead — advancing our hardware, maturing our operations, and paving the way for our first reactor demonstration in 2026.

Two years in: 60 people, three states, a 145,000-sq-ft facility, and contracts across DoW, NASA, and others.

We’re moving fast. Come build with us.
https://t.co/bFRPZpj5cl

[Alex Klein @alexklein0x]

applications for the nucleus NEXT fellowship are now LIVE. cohort 1 begins feb 15.

most venture programs teach one firm’s playbook. NEXT gives you six (++)

fellows rotate monthly across partner firms, learn distinct investing styles, and get real time with our captains and the icons we’ll announce in the coming weeks. we built NEXT because the craft looks different at every firm, and most people never get to see that contrast.

NEXT delivers that.
six firms. six philosophies. sourcing, diligence, market structure, and partner-level reasoning in real time. add in the icons and we have a launch pad for the next nucleus100 investor :)

grateful to the cohort 1 captains:
Matt Huang (Paradigm) - @matthuang
Jack Altman (Alt Cap) - @jaltma
Ev Randell (Benchmark) - @EverettRandle
Neil Shah (Greenoaks) - @shahneilp
Vince Hankes (Thrive Capital) - @vhankes
Hersh Desai (Committed Cap) - @Hersh_Desai

our goal is to make sure the caliber of the cohort matches the caliber of the partner firms and captains involved.

if you’re curious about investing, angel or vc, NEXT is a way to get real exposure and learn from some of the best in the arena.

referrals welcome. this is a very good one.

[Antares @AntaresNuclear]

We opened our Idaho Falls office in the historic Rogers Building — once home to the Atomic Energy Commission.

We’re here to build the next chapter of American nuclear innovation, including two reactors in Idaho.

Proud to add to this legacy.

[evan conrad @evanjconrad]

sfcompute has raised $40m

we're hiring linux programmers to work on supercomputers

[Legora @WeAreLegora]

$150M Series C. $1.8B valuation. One mission: to empower every lawyer with world-class AI.

We build AI with the people who use it. Every success at Legora starts with collaboration: co-developing, iterating, and scaling technology hand in hand with our customers.

[David AI @withdavidai]

David AI has raised a $50M Series B from Meritech and NVIDIA to establish the data layer for audio AI.

Audio is the front-end interface for real-world AI. At David AI, we’re creating the data that powers the models bringing these use cases to life.

https://t.co/mbRg1YwGng

[Jack Altman @jaltma]

We’re ready to add to our team at Alt Cap! We love being a small team and want to stay small-ish forever, but we have more to do these days than we can manage so it’s time to grow.

A bit about us:

- We’re investing out of our $275M fund II in San Francisco; mostly seed and series A, but there are no hard and fast rules. We just want to build something great and work with founders who inspire us.
- We love what we do; we could (and do) talk about startups and venture all day. For better or for worse, our work lives and personal lives are deeply integrated and we’re thrilled about it.
- Joy comes before excellence. We want to be as good as possible at what we do conditioned on it never coming before loving our work and our lives. We strongly believe you can have both.
- We think fortune favors the bold, that a small number of things make most of the difference, and special people are what make special things happen.
- We’re highly independent people who love our time together. No one here wants to be told what to do, but no one here is a lone wolf. We think, grow, and improve as a team.

A bit about you:

- You’re friendly and empathetic, but you’re competitive and want to be great.
- You’re a student of startups and business. You know a little about a lot in tech, and when you don’t understand something that you can tell is important you’re driven to learn about it.
- You value signal over noise. You don’t like being busy for the sake of being busy, you prioritize sanity for yourself and people around you. You’re okay to be patient and wait for great.
- You never root against a company under any circumstance; you have a deep respect for what every founder is pouring into their startup.
- You’ve done some work (maybe you were a founder or a VC before) but your glue isn’t dry and you strongly feel that your formative work years are still ahead of you.
- You’re highly flexible and want a fun journey more than a particular destination.
- You’re allergic to the politics of deal attribution and just want to win as a firm.
- You’re motivated to be hugely successful, for whatever reason is meaningful to you.

If you or someone you know might be a great fit please get in touch!

[Jack Altman @jaltma]

My goal when I became a full time investor was to be the type of partner I would have most wanted during my time building a company: someone who had done the work I was doing before, who had the network to help me reach my goals faster, and who had my back no matter what.

I’m really happy to share that we’ve raised Alt Cap II, a $275M early stage fund.

We backed ~20 companies at Seed and Series A in Alt Cap I. The new fund will be the same structure with a bit larger checks. But mostly we just want to be in business with people who inspire us.

There’s no way to say it without sounding cheesy but it’s true; I feel unbelievably lucky to do this job in the way I get to do it.

A special thanks to the founders that let us back them in Alt Cap I, you all are what it’s all about for me!

[Jack Altman @jaltma]

Parahelp’s support agent solves thousands of tickets a day for amazing companies like Perplexity, Framer, Cursor, Replit, and many more.

Thrilled to back @ankerbachryhl and @madslunau in their Series A. They are some of the most thoughtful and determined founders I’ve met in the past year and I feel lucky to get to support them.

[Anker @ankerbachryhl]

Today, we’re announcing Parahelp to the world and that we've raised $21.2M.

In the past year, @parahelp_ai has become the go-to AI support agent for the world’s fastest-moving software companies, and we're proud to say that 0% of the companies we've onboarded have churned.

We’re hiring exceptional engineers, so if you’re excited to build on the frontier of applied AI for customer support, please reach out!

[Jack Altman @jaltma]

Today marks the third series A investment we've made into a YC company in 2025.

YC is still the 🐐

[Jordan Bramble @jordanbramble]

The hard work begins now!!! Thank you @POTUS @GovNuclear @ENERGY

[Dominic Whyte @domwhyte42]

Excited to welcome @jaltma and Alt Capital as investors in Zite.

Today, AI app builders help non-engineers prototype ideas.

With Zite, we’re focused on the next challenge:

Helping anyone build useful, production-ready business software.

We think that requires a hybrid of no-code and AI “vibe coding”, with security, permissions, and visibility built in from day one.

We’ve been in private beta for 6 months and, starting today, Zite is now open to everyone.

We sat down with Jack to share the story behind @zitehq and where we’re heading.

👉 Try it free at zite dot com

[Ishaan Kapoor @Ishaank1999]

Excels are notoriously hard to parse.

Even though they are machine readable, they end up as a flat string that loses semantic meaning of tables, styling and formulas. Agents can’t use it.

We’ve solved that.

Raw spreadsheets to perfect HTML, live now on the @chunkrai API.

[Jack Altman @jaltma]

Going from a founder to a VC has been a big change and I've never been happier. I suspect it could be true for many others too.

@btrenchard and I are going to host an event for founders and operators who may be interested in the same jump one day. More info below, come hang!

[Gabriel Stengel @GabeStengel]

Excited to roll out deep research for finance powered by @OpenAI!