Fireworks AI

fireworks.ai

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Production-grade inference API for open-source models — run Llama, Mixtral, Flux, and dozens more at some of the fastest speeds available.

Why it is useful

Fireworks is built for developers who need reliable, fast inference in production. Their compound AI features let you chain models, and pricing is among the most competitive for high-throughput use cases. They also offer function calling and structured output with open-source models that rival proprietary APIs.