James da Costa

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James da Costa

James da Costa

@jamdac

Partner @a16z investing in B2B & Enterprise AI companies. Founder @fingoafrica. @ycombinator alum (S21).

San Francisco Katılım Kasım 2016
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James da Costa
James da Costa@jamdac·
🚨How does an AI-native startup unseat an incumbent?🚨 👇Enter the Greenfield Strategy: AI-native startup bingo. The battle between every startup and incumbent comes down to whether the startup gets distribution before the incumbent gets innovation. One of the most powerful, and underrated, ways for startups to win distribution is to serve companies at their formation: greenfield companies. @stripe @deel @mercury @cartainc @brexHQ @tryramp have all done this at scale. Why does this work? Simply put, acquiring customers de novo is easier than getting customers to switch: - Many of the large software incumbents have hostages, not customers. Their customers would love to switch, but ripping and replacing existing software is risky and expensive. New companies don’t face those switching costs; they simply look for the best solution and evaluate based on merit. - New companies don’t need as many features to have a complete solution. - New companies have fewer stakeholders. You only have to convince the founders. Grow with your customers: If you attract all of the new companies at formation and grow with them, you will become a big company as your customers become big companies. Consider @stripe: many of Stripe’s customers did not yet exist when Stripe was founded. Some of those early customers later became large businesses in their own right. So when enterprises outside of Silicon Valley also needed to prepare themselves for a shift to ecommerce models, Stripe was an obvious choice, with plenty of relevant reference customers already in place. Incumbents, on the other hand, would much rather sell to existing businesses vs. companies that don’t exist now but might exist in huge numbers in a few years. They are bound by the rules of P&L (Profit & Loss) – and there’s no “P” for greenfield companies that don’t exist yet, just “L” (in sales, marketing, and product development costs). The startup, however, isn’t bound to a financial model – the startup doesn’t need one; it's still figuring stuff out! That leaves ample room for the startup to define the category. Graduation moments: In a similar way, software “graduation moments” (the moments when a startup begins to develop enterprise needs) also create opportunities to execute this greenfield strategy. QuickBooks may be great for single-product, single-entity companies, but once businesses add multiple subsidiaries, currencies, or more complex reporting needs, they outgrow it and require the controls, integrations, and scalability of an ERP like NetSuite. And you can now build a far better ERP with AI - just look at @RilletHQ. AI-native startup Bingo: There are many different categories of enterprise software. Enough to fill a 5x5 Bingo board and more! In each category of the Bingo board, there sits an incumbent that could be dethroned by an AI-native alternative. So, how does a new company win the game of Bingo? - Pick a square - Make a narrow wedge much better - Find a constant source of new customers - Rapidly iterate and add features to grow with your customers - Don’t be constrained by the division of existing categories If you’re building a category-defining company on the Bingo board - come and talk to us. cc: @arampell @astrange @a16z
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etn.
etn.@etnshow·
Andreessen Horowitz (@a16z) General Partner Anish Acharya (@illscience) highlights the enormous spread between power users and average AI users: "The people that are really using the technology are using it for every aspect of their lives, every aspect of their work." "They're constantly closing loops so the models can do everything... they've also got this sort of almost cultural difference to the fact that the model is... more broadly intelligent, more disciplined, more thorough, more committed than I am." "For those people, you know, it's not psychosis if you've seen God. Like, you know, they just like they're really really at the edge." "For everyone else, you just see what's possible then you see the implications of it. It's like, oh my god." Here Anish references the writings of @benedictevans.
Anish Acharya@illscience

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

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Sarah Wang
Sarah Wang@sarahdingwang·
Agents will search the web more than humans this year. Soon it will be orders of magnitudes more. Nearly every meaningful AI workflow, from coding agents to research systems to enterprise copilots, depends on external information as a core input. For accurate and fast web search, leading AI companies and enterprises rely on @ExaAILabs. @WilliamBryk and @jeffzwang started building search from the ground up in their Harvard dorm. 5 years later they're becoming the default for developers (and agents) in the AI era. Thrilled to be leading Exa's Series C and to back Will and Jeff as they build perfect web search for the age of intelligent agents. More on why @JenniferHli @steph_zhang @JasonSCui and I invested in the comment link.
Exa@ExaAILabs

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.

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Kimberly Tan
Kimberly Tan@kimberlywtan·
Congrats to my friend @nayakkayak for joining @kleinerperkins! A great person who’s been a leader at several iconic AI companies, not to mention a distinguished alum of the @a16z scout program 🎩 Excited to partner on something together!
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Aatish Nayak@nayakkayak

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…

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James da Costa
James da Costa@jamdac·
So thrilled to partner with @oskarblock & @StiltaIP - the leading platform for IP law, helping protect and monetize the world's knowledge. In a few short months, they are already working with Fortune Global 500 companies & AmLaw 100. @dhaber @GEVS94 @gustaf @ycombinator
Oskar Block@oskarblock

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…

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Aisha S Gani
Aisha S Gani@aishagani·
⚡️New: Andreessen Horowitz is making its first investment in the Gulf with a fundraise for a Saudi startup, as investors continue to sign deals despite the US-Israel war on Iran bloomberg.com/news/articles/…
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David Haber
David Haber@dhaber·
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!
Fabrizio Serafini@fabrisera2000

x.com/i/article/2054…

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James da Costa
James da Costa@jamdac·
So thrilled to announce our first investment in the Gulf!
Mohamed Oueida@MoOueida

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.

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James da Costa
James da Costa@jamdac·
Usually, the opportunity to go greenfield applies to selling to software startups... ... in Saudi, it applies to banks too. The Kingdom plans to add hundreds of new financial institutions by 2030, all of which need core banking for the first time a16z.com/the-greenfield…
a16z@a16z

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

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a16z
a16z@a16z·
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
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Mohamed Oueida@MoOueida

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.

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benahorowitz.eth
benahorowitz.eth@bhorowitz·
I am very excited to be working with James and the Ethos team!
Daniel J. Mankowitz@DJ_Mankowitz

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.

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a16z
a16z@a16z·
We’re excited to invest in Ethos. Ethos is building AI-powered infrastructure for human opportunity. Using AI voice agents, Ethos captures the knowledge, expertise, and nuance that traditional professional profiles miss. From there, it matches people to a wide range of opportunities across the economy: market research, expert calls, fractional roles, and full-time jobs. Top earners are already making more than $10,000 per month on Ethos. Cofounders James and Daniel are building on the premise that AI shouldn’t make you replaceable, but irreplaceable. Ethos will be the next great improvement in the NPS of employment by making work itself abundant. By @illscience, @jamdac, and @omooretweets
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Daniel J. Mankowitz@DJ_Mankowitz

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.

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