# Fireworks AI Raises $1.5B Series D at $17.5B Valuation

> Fireworks AI, which runs a platform for serving and fine tuning open models, has raised a 1.505 billion dollar Series D at a 17.5 billion dollar valuation. The round was led by Atreides Management, Index Ventures, and TCV, and it vaults the company into the top tier of AI infrastructure startups. The numbers behind the raise explain the enthusiasm. Fireworks says it is running at roughly 1 billion dollars in annualized revenue and processing more than 40 trillion tokens a day, the kind of usage that signals it has become critical plumbing for companies deploying AI in production. Its pitch is speed and cost: help developers run open weight models faster and cheaper than calling the big proprietary APIs. The raise is a bet on a specific thesis, that a meaningful share of AI workloads will move to open models companies want to host and customize themselves rather than renting from a single frontier lab. At a 17.5 billion dollar valuation, investors are wagering that the inference layer, not just the models, is where a durable business gets built.

_Section: [AI Funding Tracker](https://www.wortins.com/funding) · Source: Fireworks AI · Published Wednesday, August 19, 2026_

## Wortins' read

Fireworks AI, which runs a platform for serving and fine tuning open models, has raised a 1.505 billion dollar Series D at a 17.5 billion dollar valuation. The round was led by Atreides Management, Index Ventures, and TCV, and it vaults the company into the top tier of AI infrastructure startups. The numbers behind the raise explain the enthusiasm. Fireworks says it is running at roughly 1 billion dollars in annualized revenue and processing more than 40 trillion tokens a day, the kind of usage that signals it has become critical plumbing for companies deploying AI in production. Its pitch is speed and cost: help developers run open weight models faster and cheaper than calling the big proprietary APIs. The raise is a bet on a specific thesis, that a meaningful share of AI workloads will move to open models companies want to host and customize themselves rather than renting from a single frontier lab. At a 17.5 billion dollar valuation, investors are wagering that the inference layer, not just the models, is where a durable business gets built.

## Source

[Read the full story at Fireworks AI](https://fireworks.ai/blog/series-d-announcement)

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