We Measured It: LSP Saves AI Agents 5-34x Tokens vs Grep

Short summary

Language Server Protocol saves AI agents 5–34× tokens over grep for code navigation on large codebases, with renaming reaching 1,441× savings on TypeScript. LSP returns structured, zero-false-positive results; grep scales with codebase size and produces 99% noise on complex queries. Benchmarks across Go, TypeScript, and Python show LSP cost is O(result size), grep is O(codebase size).

• •LSP 5–34× more token-efficient than grep; TypeScript sees 1,441× gains on symbol rename
• •LSP returns structured data with zero false positives; grep produces up to 99% noise on large codebases
• •LSP cost O(result size); grep cost O(codebase size)—savings scale with project scale

Generated with AI, which can make mistakes.