LMSpeed is a web platform for comparing and testing LLM API providers and models. It aggregates per-token pricing from 100+ providers, runs five-round speed benchmarks measuring first-token latency and output throughput, and audits OpenAI-compatible endpoints for model identity, prompt injection, and error leakage. It targets AI developers and teams choosing an API endpoint, and also offers model benchmark lookups, free API key listings, and provider leaderboards.