How Compiler Explorer Works in 2025 — Matt Godbolt’s blog

How we handle 92 million compilations a year without everything catching fire

How Compiler Explorer Works in 2025 — Matt Godbolt’s blog How Compiler Explorer Works in 2025 Written with LLM assistance. Details at end. Ever wondered what happens when you hit that compile button on Compiler Explorer ? Last week I was looking at our metrics dashboard, and then I realised: we now do 92 million compilations a year . That's 1.8 million a week…for a site that started as a hacky way to justify to my boss that it would be OK to turn on C++11 features 1 , that's not bad. I thought it might be fun to share how this all works. Not just a high-level summary, but so

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