Fireworks AI
High-performance inference cloud for open-source models at enterprise scale.
Description
Fireworks AI is an AI inference platform founded around 2022 in Redwood City, California by Lin Qiao and six co-founders, all of whom worked together on PyTorch at Meta AI. The company raised a $250M Series C in October 2025 at a $4 billion valuation, with NVIDIA, AMD, Databricks, and MongoDB as strategic investors. Uber, Shopify, and Genspark run production inference on the platform, which the founding team built on the thesis that enterprises should own their AI layer rather than depend on proprietary foundation model APIs.
Key Capabilities:
High-performance inference engine across 100+ open-source text, image, and audio models
Serverless inference API with OpenAI-compatible endpoints for low-friction migration
Dedicated GPU clusters with per-second billing and bulk inference discounts
LoRA fine-tuning and reinforcement learning on custom datasets
Model evaluation tools built into the platform
Quantization options for optimizing latency, throughput, and cost
Streaming token-by-token responses for production applications
Function and tool calling support across compatible models
Isolated deployments and VPC options for enterprise security requirements
Request-level logging, latency metrics, and per-project cost tracking
Python and JavaScript SDKs with OpenAI-compatible base URL migration
Free experimental tier with access to a subset of hosted models
Alternative tools
- Groq Cloud
LPU-powered inference cloud for real-time AI applications.
- Together AI
Full-stack AI cloud for inference, training, and fine-tuning
- Replicate
Run open-source AI models through a single API.