
VidaiMock
Open Source LLM Native Mock API Test Engine
What it does
VidaiMock is a tiny, lightning-fast simulator that lets you test your AI apps without the expensive API bills. It emulates OpenAI, Anthropic, Gemini, and more with zero configuration. Built in Rust for maximum speed! ✅ Physics-Accurate Simulation: Emulates real-world wire protocols (Streaming) and token delivery timing. (Chaos testing) ✅ Truly Dynamic ✅ Instant-On, Zero Fixtures: A single ~7MB binary ✅ Deeply Extensible: Use Tera (Jinja2) templates to mock any proprietary or internal LLM API
Does a similar job
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I recently built a small open-source tool to benchmark different LLM API endpoints — including OpenAI, Claude, and self-hosted models (like llama.cpp). It runs a configurable number of test requests and reports two key metrics: • First-token latency (ms): How long it takes for the first token to appear • Output speed (tokens/sec): Overall output fluency Demo: https://llmapitest.com/ Code: https://github.com/qjr87/llm-api-test The goal is to provide a simple, visual, and reproducible way to evaluate performance across different LLM providers, including…
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