The enterprise AI diffusion gap is about human expertise
The diffusion gap Pat from Sequoia is talking about is real! Model capabilities are already sufficiently advanced for most enterprise use cases. The gap is the human expertise to interface with the humans on the other side. This requires a new type of organization to deliver this capability, totally new types of skills and roles, and a new type of software delivery process. It has been exciting to think about all this here at Plank and work closely with our customers to close this diffusion gap for them.
Listen to Pat's notes: loom.com/share/c016702964a04dfba40e1777cf5f053a

- Forward deployed engineering
- Enterprise AI
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Newer: IIT Delhi makes core computer science courses optionalModels and research
Missing discrete math and the pigeonhole principle
I miss Discrete Math - it was a subject that invoked an emotional feeling of symmetry, that everything is in it's place and fits. One obvious, yet beautiful and powerful theorem was the PigeonHole Principle. It states that if n items are put into m containers, with n > m, then at least one container must contain more than one item. While it's obvious, it can be used to demonstrate some unexpected results...Eg, given that the population of London is more than one unit greater than the maximum number of hairs that can be on a human head, the principle requires that there must be at least two people in London who have the same number of hairs on their heads. The more advanced probabilistic versions of this can be used to derive some really non-obvious statistical correlations or conclusions. en.wikipedia.org/wiki/Pigeonhole_principle
Enterprise AIModels and research
Enterprise token costs head to zero, research costs grow
One thing that struck me was that while enterprise AI token costs will converge to zero because of the predictability of workflows, consumer AI usage costs will in fact go the other way because each consumer has a unique context, and further each conversation is unique. In research domains like biology, medicine, robotics, these would go up! So - enterprise token costs -> zero - consumer token costs -> stay steady - research domain token costs -> grow
Enterprise AISoftware architecture
Enterprise AI starts in the business domain, not technology
In my recent travels, as I was reflecting on enterprise AI deployments, I realized that true beauty and elegance is in unpacking the problem from the business domain to the product domain and only then the technical domain. Most enterprise AI attempts today start from technology first - pre-AI-era vendors trying to shoehorn their technology with AI slapped on top, selling complexity and "big data". In our experience even with large F500 companies, these are almost always never big data problems - my favorite quote is I can run this analysis on my iPhone, why are you running this big data lake with large compute clusters crunching data that is never actually used. Remember 100s of millions of data points are small numbers for computers! The magic is in understanding what to solve and the modeling of the business problem with an elegant technical design. If you do that, you don't need complex industrial grade pre-AI bloatware.
AI agentsEnterprise AI
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Models and research
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Software architecturePlank
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Enterprise AIPlank
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A 3-layer model architecture for agentic coding workloads
In our experiments, we found that using open source models like Qwen or Deepseek via OpenRouter looks temping and cheap on a per call or $/tokens. However, if you run a real benchmark with your pull requests, these models end up taking more rounds before they converge when running agentic workloads. The way to go is to deploy your own open source models. The architecture we go with is a 3-layer one. The 1st layer is local models running on developer machine, the 2nd layer is open source models deployed in our own cloud servers and the 3rd layer is the latest models offered by the labs. We also are able to distribute the workload based on the type - eq a pull request review can run on a slower machine as its not sync.


