Overview

San Mateo–based open-model-inference and training platform for specialized-intelligence — fine-tuning and serving open/custom models. Founded 2022 by lin-qiao (ex-Meta) and co-founders; Nvidia-backed.

Funding

  • 2026-07-16: 17.5B** valuation — Atreides, Index, TCV lead; nvidia, Lightspeed, Evantic, Bessemer, Menlo participate (2026-07-17-fireworks-series-d-businesswire)
  • Prior: Series C Oct 2025 ~4B (per Sacra secondary reporting)

Scale Claims (company-reported)

  • $1B annualized revenue run rate (5× YoY)

  • 40 trillion tokens/day; >95% specialized models

  • ~200 employees; target ~600 by end-2026
  • Historically ~50% revenue from cursor; diversified to Elastic, GitLab, MongoDB, Uber, Shopify

Sources