Lean already produces performance comparable to Haskell and OCaml. When higher performance is essential, Lean models can be translated into efficient imperative code embedded in Lean, with clean semantics and without C’s undefined behavior. We are actively working on closing the remaining gap for performance-critical code. The real comparison is not Lean versus C. It is verified code versus unverified code.
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Real-time context awareness helps too. The AI understands what you're reading without requiring you to highlight text, copy it, and paste it into a chat window. It can proactively surface relevant insights, definitions, or related information based on the page you're looking at, without manual prompting.
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