Basis Set

Built by founders and operators. Investing in early-stage companies scaling human potential with artificial intelligence.

[Basis Set @BasisSet]

Join Basis Set Fellowship, if you're graduating with projects nobody asked you to build.

12 weeks in SF, embedded with the fastest growing AI companies.

Apply today and build the future together.

[Lan Xuezhao @xuezhao]

i was almost entirely on claude code, then almost completely switched to codex, especially after the hermes + codex integration. the hermes + x/grok integration was also a big contributing factor and i now use grok primarily with a few agents.

ai operating environments (context, checkpoints, evals, permissions, memory, traces, rollback) matter more than specific models these days, especially now that inference is cheap and fast enough. a small difference in integration can make me switch to a completely different model provider.

it’s fascinating to watch large model providers play tic-tac-toe, and i also think there are plenty of opportunities for startups building model agnostic ai operating environments or specialized agents if you play your cards right.

@OpenAIDevs @grok

[Basis Set @BasisSet]

News: Takeoff41, Inc. launches out of stealth!

Takeoff is reimagining early healthcare for newborns. The team was recognized by @Nature for its work using AI to improve health outcomes for premature babies by optimizing their nutrition.

The company is building an entirely new supply chain for infant health and quite literally saving lives. Keep your eye on this team, lots of more exciting news on the way!

Read more 👉https://t.co/feB3rqvzE4

[Basis Set @BasisSet]

Check out the full @TechCrunch launch post here 👉https://t.co/QUqjCHw7Gz

[Basis Set @BasisSet]

News: Announcing Basata's $21M Series A

There is perhaps no space more in need of the benefits of AI agents than healthcare. In such a consequential space, the decisions of "what" and "how" to automate are paramount. Basata is building differently, by showing up, sitting with the healthcare administrators doing the work and building around what they actually need.

That empathy compounds: Serving 500k+ patients nationwide (100k in the past month alone!). Today we're announcing Basata's $21M Series A in @TechCrunch!

Read more about our conviction in Basata here 👉 https://t.co/I3zWuG8Wck

[Basis Set @BasisSet]

Jobs: Amazing opportunity to help push the frontier in AI memory as an early-career builder!

Apply here 👉 https://t.co/Q8DrL1EhQg

[mem0 @mem0ai]

Mem0 is partnering with @BasisSet on the 2026 AI Fellowship, Agentic Memory Track.

If you’re an early-career builder excited about AI agents, memory, retrieval, and context engineering, this is for you.

As agents move from demos to real products, memory becomes core infrastructure.

Fellows will work on real-world problems across persistent memory, personalization, retrieval, and context management.

🕑 12 weeks, mid-June to early September 2026
📍San Francisco, in person

Apply by May 1

Link below 👇

[Basis Set @BasisSet]

https://t.co/C8KCeffFtz

[Basis Set @BasisSet]

Perspectives: Investing in the Open Source Agent Stack (part 2 of 2)

The agent era structurally favors open source and it's creating opportunities for founders and investors alike, both in the the infrastructure beneath AI, and in the products built on top of it.

Below AI, tools are emerging across security, reliability and agent-native primitives. Above AI, an application layer is emerging, resulting in products that combine models, harnesses, and user experience to own particular workflows or audiences.

These layers reinforce each other. As more companies adopt open-source agents (above AI), the demand for security, reliability, memory, and primitives (below AI) grows. As below-the-AI infrastructure matures, it lowers the barrier for more application-layer products to reach production quality.

This is the flywheel. Open-source models and harnesses commoditize the foundation. Application-layer companies specialize for audiences. Infrastructure companies make the whole stack reliable. Each layer accelerates the others.

The agent era is creating an enormous new market. The companies that win will be the ones that solve the hardest problems at each layer of the stack, for both open and closed ecosystems, with the kind of operational depth that no LLM can generate from scratch.

If you are building at any layer of this stack, we would love to hear what you are working on.

Check out the full piece from @_changxu in the comments.

[Basis Set @BasisSet]

Jobs: Very special opportunity to work alongside some of the fastest growing and most culturally impactful commerce companies of our generation!

Apply here 👉 https://t.co/JhGJZYD3TY

[Steve Neola @SteveNeola]

@BasisSet opened the 2026 AI Fellowship — Commerce Track.

12 weeks in SF this summer. Mentorship from an AI-native VC. Hand's on building opportunity.

https://t.co/PjBA6Wfgpt

[Basis Set @BasisSet]

Love seeing @openart_ai and @Solvelyai represented on the inaugural Prosumer AI 40!

[Notable Capital @notablecap]

Introducing the inaugural Prosumer AI 40 List, recognizing the 40 tools reshaping how individuals build, create, and operate, nominated by 25 leading venture firms.

The full list, and the thesis from @hanstung, @chelcietay & @Camiiikatz on why this category is surging: https://t.co/wMV4BH60tJ

[Basis Set @BasisSet]

https://t.co/BzHtT9MNgR

[Basis Set @BasisSet]

Perspectives: The Future of Agents is Open Source (part 1 of 2)

The agent era rewards systems over single models, and those systems reward the control that open models bring. The more agentic software becomes, the more valuable openness becomes, not because open source is ideologically pure, but because modular systems compound.

As agent harnesses mature, work is decomposing into reusable primitives. Planning. Exploration. Context compaction. Code editing. Bash execution. Verification loops. Memory writeback. Error recovery.

It's quickly becoming clear that the best model per primitive is not the best model overall.

And having full control over prompts, context and inference, coupled with the ability to fine-tune on your workflows with open models, boosts performance and radically reduces costs.

Check out the full piece from @_changxu below.

[Basis Set @BasisSet]

https://t.co/qplXHMZWEK

[Basis Set @BasisSet]

News: @parasail_io announces their latest $32M Series A

Parasail is building the world’s fastest, most cost-efficient AI inference network. We knew they were onto something based on the sheer number of companies that came to us and told us about why they were switching workloads to Parasail. Today Parasail hosts GPUs in 15+ countries and generates over 500 billion tokens a day.

Read more about Parasail in their TechCrunch feature 👉 https://t.co/lEWV0IYGwd

[Basis Set @BasisSet]

Jobs: @TigrisData is hiring for a Solutions Engineer and a Developer Relations Engineer!

Tigris Data is the storage layer purpose built for AI. Tigris storage scales infinitely, can be shared across any cloud, and provides instant access to all your data, all over the globe. If you're excited about representing Tigris at developer and data community events or helping developers understand and succeed with Tigris, these roles could be a fit!

Apply here: https://t.co/10QxgSpihp

[Basis Set @BasisSet]

Jobs: Very unique opportunity to get firsthand exposure to data center operators, while contributing to critical infra!

Apply here 👉 https://t.co/q2lBTqkQsN

[Internet Backyard @netbackyard]

Applications are now open for the @BasisSet x Internet Backyard AI Fellowship.

We're looking for ambitious early-careers builders who want to bet on the financial infrastructure layer of AI before everyone else catches on.

As a fellow, you'll:

👉 Work directly inside the compute economy: neoclouds, inference, data center operators

👉 Build real experience with the billing and payments infrastructure that powers AI infrastructure companies

👉 Join a cohort of ambitious peers who will push you and open doors and access to the Basis Set platform

I can't overstate how early this is. The picks-and-shovels layer of AI is still being built. The people who understand it now will be the ones contributing today will be the ones laying the foundation for decades to come.

We’re building Internet Backyard to be the billing and payments backbone for compute. The fellows program is how we're investing in the next generation of people who'll run it.

Don't sit on it. Applications are rolling, but momentum favors the early.

Spots are limited. Apply now!

https://t.co/EmTeeVIEYh

[Basis Set @BasisSet]

Announcement: Applications for the next cohort of Basis Set AI Fellows are OPEN!

We're looking for ambitious early-career builders who want to work directly with the Basis Set team and some of the most exciting frontier AI companies in our portfolio 🚀

If you want to build cool stuff, apply today! 👉 https://t.co/3omab5w3bx

[Basis Set @BasisSet]

News: Congrats to @withdaydreamco on their latest $15M Series A

Daydream is building the dream team of growth, giving every company access to the sharpest insights and workflows from the best operators across SEO, AEO and growth. We've seen this from the inside out, watching them support @openart_ai as they crossed $70M ARR with <20 people and other category-leading companies like @clay and @zapier.

Read more about Daydream, why we backed @thenuka_k at the earliest stage, and the future of growth-as-a-service 👉 https://t.co/D75TLVoQCg

[Basis Set @BasisSet]

News: Huge milestone for Neion Bio, announcing our $11M Seed, a major commercial partnership and a feature in the @nytimes!

Drug manufacturing is insanely expensive and geopolitically vulnerable in America. Dimi, Sam and team have created a way to make life saving medicines domestically at one-hundredth of their current cost. It sounds like science fiction, but it's not.

Read more about Neion and their work leveraging nature's protein factories 👉 https://t.co/CyRCSDjJj0

[Basis Set @BasisSet]

Jobs: @openart_ai is hiring for a Strategic Partnership Manager, an AI Social Content Creator, and a Founding Platform & Reliability Engineer!

OpenArt is the leading AI platform for visual storytelling. If you're excited about growing high-impact partnerships, creating compelling AI-powered social content, or owning infrastructure reliability end-to-end, these roles could be a fit!

Apply here: https://t.co/zWZDJrxrd8