Fireworks AI ranks #3 in LLM Inference & Serverless GPU AI search.

Fireworks AI is a high-performance AI inference and model lifecycle platform founded in 2022 by the team behind PyTorch at Meta. Headquartered in Redwood City, California, it enables developers and enterprises to build, fine-tune, and scale generative AI applications across hundreds of open-source models spanning text, image, audio, and multimodal formats. Its proprietary FireAttention CUDA kernels deliver inference speeds significantly faster than standard open-source engines. The platform provides three deployment modes—serverless pay-per-token, on-demand GPU per-second, and enterprise reserved—alongside advanced tuning capabilities including LoRA, supervised fine-tuning, DPO, and reinforcement fine-tuning. With an OpenAI-compatible API, strategic partnerships with AWS and Microsoft Azure, and enterprise compliance certifications, Fireworks serves over 10,000 customers including Cursor, Notion, Uber, Shopify, and DoorDash. The company has raised $327M at a $4B valuation.