Fireworks AI ranks #9 in AI/ML Infrastructure & LLM Tools AI search.

Fireworks AI is a production-grade AI inference cloud and fine-tuning platform founded in 2022 by the team that built PyTorch at Meta. The platform enables developers and enterprises to build, tune, and deploy generative AI applications using hundreds of open-source models spanning text, vision, audio, image, and multimodal formats. Its proprietary inference engine—including custom CUDA kernels and model optimization techniques—delivers industry-leading throughput and low latency. Fireworks serves over 10,000 customers, including Cursor, Uber, Shopify, Notion, and DoorDash, processing more than 10 trillion tokens per day. Headquartered in Redwood City, CA, and backed by Sequoia, Lightspeed, Benchmark, NVIDIA, and AMD, the company raised a $250M Series C at a $4B valuation in October 2025.

Fireworks AI is an AI inference cloud and model lifecycle platform that lets engineering teams run, fine-tune, and scale open-source generative AI models in production. Built by the creators of PyTorch, it offers a serverless API across 100+ models, dedicated GPU deployments, and advanced tuning capabilities—including supervised, reinforcement, and quantization-aware fine-tuning—all behind an OpenAI-compatible interface with enterprise-grade security and global infrastructure.