An in-depth comparison of Pi and Windsurf across output quality, autonomy, reliability, speed, value, and ease of use. Vote for your favorite.
Looking for the Oh My Pi (omp) fork instead?See Oh My Pi vs Windsurf →
Pick a winner in each category — you can change your vote anytime.
Choose Pi if you are developers who want a fast, minimal, hackable terminal agent with full control over context and models. Choose Windsurf if you are developers who want an affordable AI editor with agentic capabilities.
In our editorial scoring, Pi leads in 3 of six categories (reliability, speed and value), while Windsurf leads in 2 (autonomy and ease of use). On price, Pi runs free (mit) — bring your own model and is open source; Windsurf runs free tier / $15-30/mo and is proprietary.
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Weighing the cost of running it? Compare API plans for Pi
Pi is an open-source terminal coding agent and agent harness created by Mario Zechner (badlogic, creator of libGDX) and published under MIT by Earendil. Its philosophy is radical minimalism: by default the model gets a small set of tools — read, write, edit, bash — and everything else, from subagents to plan mode, lives in TypeScript extensions. That keeps the loop fast, the context clean, and the behavior fully under your control. It supports 30+ model providers with mid-session switching, session branching and compaction for long tasks, and custom OpenAI-compatible providers via a simple models.json.
Windsurf (formerly Codeium) is an AI-first code editor featuring Cascade — an agentic flow that can handle multi-file, multi-step coding tasks. It combines the familiarity of VS Code with powerful AI capabilities including code generation, refactoring, and terminal integration.
Pi runs on Standard Compute