Fireworks AI
High-performance AI inference platform built by former Meta PyTorch engineers.
About
Fireworks AI offers a serverless inference platform for generative AI, enabling developers to control speed and reliability without reserved capacity. Their platform supports building and running AI capabilities from experimentation to production, including applications like code assistance, conversational AI, and enterprise RAG. Fireworks provides access to a model library of popular open-source models optimized for cost, speed, and quality.
Key facts
At-a-glance profile data
- Website
- fireworks.ai
- Headquarters
- San Francisco, United States
- Founded
- 2022
- Employees
- 148
- Total funding
- $1.8B (Series D)
- Business model
- B2B
Funding rounds
| Date | Round | Amount | Post-money | Lead investors |
|---|---|---|---|---|
| 16 Jul 2026 | Series D | $1.5B | - | - |
| 27 May 2026 | Funding Round | Undisclosed | $15.0B | - |
| 28 Oct 2025 | Undisclosed round | $250M | - | Benchmark Capital, Lightspeed Venture Partners, Matt Bornstein |
| 23 May 2024 | Undisclosed round | $25M | - | Benchmark |
Tech stack
Detected on fireworks.ai, last scanned 5 Sept 2026. Run your own scan
- Frontend
- Next.js, Tailwind CSS
- Analytics
- Google Tag Manager
- Observability
- incident.io
- Support
- Discourse
- CDN
- Vercel
- Email provider
- Google Workspace
- Email marketing
- Mailgun
“Fireworks AI alternatives 2026 - looking for something faster. Fireworks feels more sluggish the last few weeks. Both TTFT and overall throughput seem degraded compared to when I first started using them a few months ago.”
View on Reddit“Fireworks AI, the AI infrastructure company, quietly launched a coding subscription. Unlimited Kimi K2.5 at 200 tps. (Limited to K2.5 for now.) Limited seats available. Just sign up. It's that good. Free for your first week.”
View on Reddit“From the image below, it can be seen that on Kimi2.5, Nebius Token Factory provides both lower cost, and faster inference. This is crucial: its a huge competitive advantage and a big selling point. I consider FireworksAI and TogetherAI to b…”
View on Reddit“Fireworks.ai AST critical issues (stay away until they fix them). Hello, A quick summary: fireworks.ai STT has critical errors, isn't reliable at all, they confirmed the issue, but haven't fixed it in a month.”
View on Reddit“A quick update about the Fireworks speech recognition bug. The Fireworks team is unfortunately very slow to fix it, despite having all the needed info and data. I'm bombarding them with emails and it would be perfect if they provided a clea…”
View on RedditSome comments are pulled from public discussions around the web (look for the source icon). Quotes are excerpts; click through to read the full thread.
Frequently asked
How much funding has Fireworks AI raised?
Fireworks AI has raised a total of $1.8B in funding. The most recent round on record is Series D.
How many employees does Fireworks AI have?
Fireworks AI has approximately 148 people on record.