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LLM Test Server

LLM Test Server

Your LLM tests, without the provider

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LLM Test Server is a local, deterministic stand-in for 13 LLM provider APIs. Your app keeps its official SDK and points it at namespaced routes like /openai/v1; answers, tool calls, streams and failures come from fixtures your test sets up. The dashboard shows where every token goes: system prompt, tool schemas, conversation turns, prompt-cache reads and writes. Built forNET and Aspire, and shipped as a Docker image so any stack can use it. Free and open source.

LLM Test Server makers

Here are the founders, developers, designers and product people who worked on LLM Test Server

Alina Kostiuk 🇺🇦COO at Prostir
LLM Test ServerLLM Test Server