

James da Costa
1.2K posts

@jamdac
Investing in B2B & Enterprise AI companies @a16z Partner to @Lio_Technology @StitchHQ @PetualAI @hilbertsai @StiltaIP and more



1% have seen god, 99% are wondering what all the fuss is about


We raised $250M in Series C funding at a $2.2B valuation, led by a16z. Exa is a search lab organizing the web's data for agents.

The new kit has launched. To celebrate the launch of Arsenal's new kit, and Deel becoming the official sleeve partner next season, we're giving away a signed squad shirt 🔴⚪️ Retweet and comment below for your chance to win. Winners will be announced on 21st May!!


After a rewarding journey at @harvey, I’m excited to share I'm joining @kleinerperkins as a Partner to back the next generation of AI-native founders! When I joined Harvey as the first PM, we were just 20 people with 5 customers quietly building in a world that still ridiculed GPT wrappers. Thank you to @winstonweinberg and @gabepereyra for showing that with a relentless focus on the customer and a constant dissatisfaction with the status quo, nothing else matters. I remain incredibly bullish in @winstonweinberg, @gabepereyra, @aniqued, & @sgurumur's leadership to take the company to the next level, raising the bar for the whole application layer. Company building is when you learn the hard lessons that don't show up in any pitch deck; it’s chaotic but addictive. And I’ve had the privilege to do it early at three AI decacorns at three different layers of the stack: Harvey (apps), @scale_AI (data), and @shieldaitech (physical). The pattern I’ve observed is that great founders don't just build great products, they paint the AI transformation vision for their industry, redefining how work actually gets done. The winners of this cycle will combine unique domain insights, customer-centric decision making, and nimble, talent dense teams all with the goal of becoming the canonical deployment of AGI in their space. We are still only at the beginning of an industrial revolution much bigger than the last, and the opportunities are infinite. That conviction in the future, while respecting the history, is what drew me to Kleiner Perkins. @mamoonha, @ilyaf, and the team are backing the founders seizing that opportunity right now, including Harvey, @p0, @tryprofound, @JoinNooks, @getavoca and more. And they’re doing it with both the ferocious conviction and intellectual humility this moment requires. I’m excited to dive in with this team and the founders they’ve backed. If you're an AI-native founder in any domain, I'd love to chat! There’s so much left to build. Full news here: kleinerperkins.com/perspectives/w…

We just raised $10.5M led by @a16z. Patents protect the world's most important innovations, but the analysis to actually use them has always been too slow and too expensive. @StiltaIP changes that, and is already used on the highest-stakes IP work at multiple AmLaw 100 firms and Fortune 500 IP teams. If you want to help define how the next generation of innovation gets protected, we're hiring: ycombinator.com/companies/stil…



I couldn't be more excited to welcome Fabrizio to @a16z and to the AI Apps team more specifically! Fabrizio has really pushed my perspective of what's possible for AI in our industry and I'm excited to see the impact he'll have here at the firm + the entrepreneurs we are fortunate to partner with!


Stitch raised a $25M Series A, led by @a16z, with continued backing from Arbor, COTU, Raed, and SVC. Grateful to our customers, who trust us with the systems that run their business. Financial institutions still run on infrastructure that should have been left behind 20 years ago. Every other industry is being transformed by AI. Financial institutions are falling behind. Not because they don't want to. The infrastructure underneath won't let them. @StitchHQ fixes that with a single operating system for financial institutions, unifying the ledgers, primitives, and workflows. One stack to build and run financial products on. Thrilled to have @arampell, @jamdac, @dhaber, and the a16z team alongside us. And thanks to @ArborVentures1, @COTUVentures, @RaedVC, and @SVC_SA for the continued support.

We are thrilled to lead Stitch’s Series A, and honored to make this our first investment in Saudi Arabia. @StitchHQ is building an operating system for modern financial institutions, starting in the Middle East. Its API-first platform enables banks, fintechs, and non-financial institutions to launch, scale, and operate financial products across a modular stack. In the last six months alone, more than $5 billion has been transacted on the Stitch platform. Customer numbers grew 10x in 2025, revenue grew 20x, and Stitch has seen pull beyond the GCC into Africa and Southeast Asia. Mohamed, Stitch’s founder, has the rare combination of relationships, sales instinct, and grit to win in a market where trust and distribution matter as much as product. After years building conviction around the global fintech infrastructure opportunity, we believe Stitch represents the clearest expression we’ve found of what the next generation of this infrastructure looks like. @arampell @jamdac


Stitch raised a $25M Series A, led by @a16z, with continued backing from Arbor, COTU, Raed, and SVC. Grateful to our customers, who trust us with the systems that run their business. Financial institutions still run on infrastructure that should have been left behind 20 years ago. Every other industry is being transformed by AI. Financial institutions are falling behind. Not because they don't want to. The infrastructure underneath won't let them. @StitchHQ fixes that with a single operating system for financial institutions, unifying the ledgers, primitives, and workflows. One stack to build and run financial products on. Thrilled to have @arampell, @jamdac, @dhaber, and the a16z team alongside us. And thanks to @ArborVentures1, @COTUVentures, @RaedVC, and @SVC_SA for the continued support.

Today Ethos announces our $22.75M Series A led by @a16z, with participation from @generalcatalyst, @xtxmarkets, @MattEvantic, and @_CommonMagic. Ethos turns what you know into recurring income - matching your expertise to expert calls, research, AI training, fractional work, and full-time roles. 35,000 people are joining Ethos every week. People are making $10,000 every month on Ethos. AI shouldn’t replace you. It should make you irreplaceable. Build your profile at askethos.com.

I'm super excited about this investment, a few notes: - Ethos unbundles expertise from work - consumers get paid for their unique expertise within a field - For example, a product manager who specializes in design craft vs execution vs growth would get paid different amounts for different tasks - The bet is that knowledge is dynamic and ever changing, so building a highly engaged/retained community of human experts is the right model - And more broadly we think this sets Ethos up to build the intermediary for all forms of finding work and contributing knowledge - from labs to full time jobs Most importantly, Daniel and James are generational thinkers / A+ humans. We're grateful to be working with them. Let's go!!!


Today Ethos announces our $22.75M Series A led by @a16z, with participation from @generalcatalyst, @xtxmarkets, @MattEvantic, and @_CommonMagic. Ethos turns what you know into recurring income - matching your expertise to expert calls, research, AI training, fractional work, and full-time roles. 35,000 people are joining Ethos every week. People are making $10,000 every month on Ethos. AI shouldn’t replace you. It should make you irreplaceable. Build your profile at askethos.com.