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Dev tools · January 2, 2026

VidaiMock

Open Source LLM Native Mock API Test Engine

Visit vidai.ukAlternativestop 8% of January 2026

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

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