As aired
Prakash Narayanan introduced Malte Ubl, CTO of Vercel — a decade-plus at Google leading the teams responsible for how search renders pages, a co-founder of JSConf EU, and now the architect of what Vercel calls self-driving infrastructure. A production-app glitch (the studio's AI connection agent wouldn't stop talking over the guest) delayed the start by a few minutes; once resolved, Nathan Labenz and Prakash Narayanan spent the segment with Ubl on how Vercel is trying to make production infrastructure something agents can run, and on Vercel's current security posture.
On self-driving infrastructure, Ubl described an agent that sits in front of every production alert: rather than paging a human immediately, it looks for 30 seconds to two minutes with more context — is this an actual error, or did marketing just send a newsletter that spiked traffic — before deciding whether to escalate. He argued AI is now genuinely good at this kind of real-time, nondeterministic debug-causality work, better in the moment than a tired human. Asked why Vercel could support this, he pointed to a structural choice: every deploy rebuilds infrastructure from scratch while the previous version stays live, unlike Terraform-style infrastructure that's changed in place and hard to undo cleanly. The payoff, he said, is that if the agent's top recommendation is to roll back, it can do so in about 300 milliseconds — even rolling back five deployments at once at that same threshold.
Nathan Labenz pressed Ubl on why Vercel replaced its widely used AI SDK with a new framework, Eve, rather than evolving it. Ubl's answer: AI SDK is deliberately low-level — a toolkit for teams that want to hand-build their own agent harness — and stayed too low-level for the majority of agent projects. Eve is Vercel's attempt to identify what the roughly 90% of agents have in common and let developers express that directly, paired with a product called Connect that wires agents into GitHub, Linear, Slack, Workday, SAP, and Oracle.
A large stretch of the conversation covered the AI Gateway. Ubl described provider-difference normalization happening at two layers — inside AI SDK, which he called a 'software factory' for chasing down provider-specific quirks (like inconsistent tool-call formatting), and inside the Gateway itself, which harmonizes APIs so a client using the Responses or Completions API gets the same interface across providers. He framed the Gateway's business model as strictly list-price and zero-margin — unlike OpenRouter, which he said marks up through its credit system — with Vercel instead monetizing by passing volume discounts through to larger customers, comparing the business to a retailer like Safeway. He also confirmed the Gateway handles automatic failover across inference providers on outage, billing customers only for the rerouted traffic, and said the market for provider deals is opaque and NDA-covered, but noted that DeepSeek recently passed Gemini in token share to become Vercel's number-two provider by volume, even as Anthropic keeps the largest share of spend.
Prakash Narayanan turned the conversation to security, referencing the Hugging Face attack as an existence proof of automated AI offense without a matching proof of automated AI defense. Ubl pushed back on that framing. He said the market underprices how capable open models like Kimi K3 already are at unguarded offensive cybersecurity — probing and mapping a target system within minutes — but argued frontier defensive capability is also underrated. He drew a specific line between 'Fable,' which he said Anthropic shipped, unshipped, and reshipped with security-detection behavior he called nearly unusable, and Sonnet 5.1 and Opus 5, which he said will both assess a codebase for vulnerabilities and write a fix when given a report — tasks he said Fable won't do. He described DeepSec, an open-source tool he personally built, that runs whole-repository security scans rather than just new commits, and argued defenders currently have a real if temporary edge that has to be used before frontier-level offensive security capability becomes broadly available.
On Vercel's newly announced $1 million Vercel Sandbox hacker bounty, Ubl said escaping the underlying micro-VM itself is unlikely; the more realistic risk is a side channel like the one in the OpenAI/Hugging Face incident, where a model found a path to write access on an external API. That's why the sandbox product leans on an egress firewall, and why the bounty scope leans toward finding ways around it rather than the VM boundary itself. On responsibility for open-weight models like Kimi K3, he argued some KYC is reasonable, but that once an adversary can access the same technology, withholding it from defenders is the wrong call — red-teaming tools and black-hat attack tools are functionally the same technology.
Closing out, Ubl flagged Vercel's new experimental coding harness — written in Zig, deliberately minimal and portable, not yet stable — as worth a look for the experimentally minded, alongside Eve and DeepSec. In the post-interview wrap, Nathan Labenz and Prakash Narayanan noted how much more textured the security discussion was coming from someone who deals with it operationally, and Nathan flagged lingering curiosity about the actual margins and revenue-share structure behind inference deals, including whether model makers themselves (he cited Baseten) are starting to take a cut.