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🌊 Fireworks AI: $0 to $1B ARR in under 4 years

The 8 growth levers behind the engine room of open-source AI

Ivan Landabaso's avatar
Ivan Landabaso
Oct 01, 2026
∙ Paid

👋 I’m Ivan. I study how top 1% startups grow.


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Hello there!

This week I’m diving into Fireworks AI, a company running open AI models for other companies (i.e. Cursor, Uber, Notion) that recently raised $1.5B at a $17.5B valuation (4 years after its founding, another AI-wave rocket-ship):

In a nutshell:

  • Product: think about it like an “engine room” for AI. Companies that don’t want to depend on OpenAI / Anthropic take a free open model (i.e DeepSeek or Llama) and Fireworks runs it for them (fast, cheap and inside their product). Today it apparently already handles 40T+ tokens a day (tokens are the chunks of words AI reads + writes) for 10K+ companies.

  • Money: the model is what’s quickly becoming a classic = pay per use (i.e. $0.30 per million tokens in, $1.20 per million out on a model like DeepSeek), renting chips by the hour (i.e. $8/hr for an Nvidia H100), or pay to train your own custom model. They’ve already passed $1B in annualized revenue as of July this year with around ~200 people ($5M per employee!).

  • Driver: loved how they frame it here: “Companies are no longer renting general intelligence. They’re building their own.”

8 growth levers in this drop:

  1. Sold Meta’s internal speed tricks to everyone

  2. Made switching painless at the moment costs typically start to hurt

  3. Had every hot new free model running on launch day

  4. Built custom for the fastest-growing customer + then sold it to everyone

  5. Made engineers part of the “unofficial” sales team (inside the customer’s Slack)

  6. Made a custom model cost the same as a generic one

  7. Turned big clouds into both suppliers and a sales channel

  8. Bet on deciding which model runs for each task

📐 Quick note on editorial + methodology: this analysis focuses on the 80/20 mechanics that explain their growth (it’s not a comprehensive profile, not an endorsement or investment advice). I use AI like a fund leverages an analyst for groundwork, the direction + judgement are mine. Company-reported figures are marked as such, treat directional estimates as directional.


Zero to one

source
  • Who: 7 engineers who used to run the AI plumbing at my good old employer Meta + Google (6 from Meta and four of them actually from the PyTorch team aka the free toolkit most of the world uses to build AI models today).

    • Lin Qiao (CEO): led the PyTorch there growing the team from 5 to ~300 people, before that IBM and LinkedIn. She started Fireworks at age 48 (after shelving a 2015 startup plan to learn how to lead people at Facebook). She meant to stay “one year or two” and stayed 7.

    • Dmytro Dzhulgakov (CTO): from Ukraine who’s a PyTorch core maintainer after 11 years at Meta, before intern at Google.

    • Benny Chen: a new Zealand-born engineer who ran ads infra also at Meta.

    • Plus Dmytro Ivchenko, James Reed, Pawel Garbacki (all ex-Meta) and Chenyu Zhao (ex-Google).

  • Where they started (fall 2022): they all apparently left Meta about 2 months before ChatGPT came out and the first plan was a platform to help companies use PyTorch. Benny, in 2024 said: “Exactly how, we didn’t really figure out completely... ChatGPT wasn’t out yet, so we had to pivot somewhere in the middle.” They raised $25M from Benchmark and Sequoia before having let alone launching a product. Apparently, fun detail, they started in a building literally called the “Sequoia building” before Sequoia invested.

  • The wedge: PyTorch was of course free and open so companies like Walmart, Disney, Tesla, Netflix etc used it too and they kept coming back to Lin’s team asking “can you build this training platform for us? Can you build this serving platform for us?” Lin took it as a signal the industry was ready / market timing was right, “and then more importantly, we have the key.”

  • The MVP: a platform that launched in August 2023 (11 months in). Run and customize free models through a simple web connection with a free tier for devs:

Fireworks.ai: Fast, Affordable, Customizable Gen AI Platform
source
  • First users: “a lot of ex-coworkers from Meta,” says Benny plus teams who trusted the PyTorch name (this is a classic Silicon Valley dense network kindling effect), and by mid-2024 the list already included Cursor, DoorDash and Quora.

Fireworks Raises $52M Series B to Lead Industry Shift to Compound AI Systems
source

Growth Mechanics

Lever 1: Sold Meta’s internal speed tricks to everyone

“Our biggest differentiation is... Fireworks off the shelf is faster than both of the offerings and second is we’re building a system, not just a library.” (Lin, Sequoia)

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