Cloudflare buys Deno, the open-source software that let customers leave its Workers platform
Node.js creator Ryan Dahl's Deno sold for undisclosed terms after raising about $26 million. Kenton Varda's stated wager: an exclusive model "narrows our TAM," so Cloudflare bought the exit door and set a six-month clock on the rival host.
Vincent Jiang · 3 min read
Node.js's creator just sold the exit door
Ryan Dahl built Deno to fix what Node.js got wrong 12. In August his team shipped celld, an open-source implementation of Cloudflare's Workers and Durable Objects that scales across machines on hardware anyone controls 13. On October 9 Cloudflare bought the company; terms were not disclosed 1.
The wind-down clocks started with the announcement 12: Deno Deploy's paying customers get six months to migrate onto the acquirer's platform, and the runtime gets a year of monthly patches before development ends. For NET holders, the deal is a bet that portability widens the funnel into Cloudflare's+5.82% — Cloudflare, up 5.82 percent today compute, not an admission that Workers needed a moat repair.
$26 million in, no number out
Deno raised about $26 million across two rounds: a $5.9 million seed in 2021 and a $21 million Series A led by Sequoia Capital and announced on June 21, 2022 124. Terms of the sale were not disclosed 1, so the multiple on that money stays private.
The market priced a neighboring layer the same day: Andreessen Horowitz led an $870 million round valuing TypeSafe, whose Jev decision model contests Cloudflare's Clef line, at $7.5 billion 56. Sequoia, Deno's own Series A lead, was among the participants 5. Deno's investors exited the runtime layer for an undisclosed sum 1.
The platform paid to remove its own trap
Durable Objects are the internet's favorite Cloudflare lock-in accusation: apps built around them are hard to move, and celld was the unlock 3. Cloudflare's answer was to buy it.
"If the model is exclusive to us, that narrows our TAM," Cloudflare distinguished engineer Kenton Varda said; making the model work on every provider "comes back to benefit us" 1. He conceded Cloudflare "just didn't have the right talent to see it through," and that workerd's Durable Objects have only ever run single-instance 123.
Same day, a 58% price cut
The wager rides on a business still spending for growth: Q2 2026 revenue of $696.1 million, up 35.9% year over year, against a $205.7 million operating loss 7.
Cloudflare's quarterly revenue has more than doubled since Q3 2023
Data
| Revenue | |
|---|---|
| Q3 '23 | $335.6M |
| Q4 '23 | $362.47M |
| Q1 '24 | $378.6M |
| Q2 '24 | $401M |
| Q3 '24 | $430.08M |
| Q4 '24 | $459.95M |
| Q1 '25 | $479.09M |
| Q2 '25 | $512.32M |
| Q3 '25 | $562.03M |
| Q4 '25 | $614.51M |
| Q1 '26 | $639.76M |
| Q2 '26 | $696.06M |
The same day, Cloudflare cut Clef-flash's hosted input price from $0.09 to $0.038 per million tokens 6, a price its rate card confirms 8. The pattern across runtimes is consolidation: Anthropic$350B — Anthropic, private, latest valuation $350B took Bun, the other Node.js alternative, in December 2025 1. Dahl's stated prize is agents, where Durable Objects bundle cheap execution, persistent state and WebSockets into one harness 19.
The exit door works, and the landlord owns it
Varda's defense is on the record: Shopify required an open-source runtime before it would build on Workers in 2022, and former customers have used workerd to leave 310. "We believe only the open version wins here," Dahl said 1.
The deadlines are on the calendar: Deno Deploy goes dark around April 2027, six months out, and runtime patches run monthly through October 2027 12. Cloudflare promises more on the merged celld-workerd runtime "in the coming months" 3. Dahl indicated the combined project is expected to remain open source, likely under the Apache 2.0 license celld already uses 1. For NET holders: an open Workers model feeds Cloudflare's meter faster than a closed one defends it.
Deepdive
AI-generated from this story and its cited sources. Not investment advice.
