Composer vs Cascade: Two agent philosophies
Cursor Composer operates as an in-editor terminal and multi-file orchestrator, giving developers explicit control over file additions, diff acceptances, and terminal command execution. Windsurf's Cascade takes a proactive 'Flows' approach, treating the human and AI as pair programmers where the agent autonomously tracks cursor movements, active files, and diagnostic lint outputs without requiring manual context tagging.
Codebase indexing and retrieval accuracy
Cursor utilizes a high-performance shadow AST and vector indexing layer that handles tens of thousands of files smoothly. Windsurf, powered by Codeium's proprietary contextual graph engine, excels at understanding symbol definitions, reference hierarchies, and cross-package dependencies. In monolithic enterprise codebases, Windsurf often retrieves the exact helper function with fewer search attempts.
Diff review and developer safety
Cursor's split-view diff reviewer remains the gold standard: developers can reject individual lines while accepting the rest of a patch. Windsurf's Cascade provides clean inline and multi-file change reviews, but developers managing sensitive branches often find Cursor's explicit reject-by-hunk controls safer for production codebases.
Pricing, plans, and BYOK flexibility
Both tools offer free tiers and $20/month Pro subscriptions. Cursor provides high flexibility for bring-your-own-key (BYOK) with Anthropic, OpenAI, or custom base URLs, plus advanced MCP extension support. Windsurf integrates tightly into Codeium's unified enterprise offerings, which can simplify procurement for organizations already leveraging Codeium infrastructure.