Pi Web vs Propane: Features, Pricing & Which Is Better (2026)

A side-by-side comparison of Pi Web and Propane — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.

Pi Web

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Free

Local web UI for the Pi coding agent — browse sessions, switch worktrees, manage models, and chat beside your project files in a browser.

Session Browser: Reads local Pi session files and organizes prior conversations by project for quick resume.
Fork and Continue: Continue from any earlier message or fork a session into a separate route to try alternatives safely.
Git Worktree Switcher: Switch between Git worktrees from the sidebar to work on multiple branches in parallel.
File Preview: Side-by-side chat and project file browser that previews source, docs, images, audio, and PDFs.
Model and Skill Manager: Configure models, API keys, run model tests, and toggle skills from the web UI instead of CLI flags.
Local-Only Runtime: Runs on http://127.0.0.1 by default so session data and code never leave the developer's machine.

Resume Prior Work: Reopen a conversation from last week by project instead of scrolling terminal history.
Safe Experimentation: Fork a session to try a risky refactor without losing the original conversation state.
Parallel Branch Work: Switch Git worktrees mid-session to jump between feature branches in one workspace.
Model Comparison: Rerun the same task against different configured models to compare output quality.
In-Browser Code Review: Preview generated diffs and project files beside the chat without leaving the browser.

Paid

A product-management system that connects all your customer data into shared context for product teams and their AI agents.

Customer Data Connection: Connect every tool, interaction and competitor into one place so your whole team and agents see the same context.
Context in Minutes: Link your stack and surface your first customer context within minutes of setup.
Signal Extraction: Turn each data point into a real, actionable signal teams can build from rather than raw noise.
Collaborative Canvases: Prioritize, sketch and shape roadmaps together in shared spaces with full context.
Agent Hand-off: Hand the full context to AI agents so they work with more accuracy, higher quality and faster shipping.
Stack Integrations: Unlimited integrations with HubSpot, Intercom, Slack and other product tools.

Roadmap Prioritization: Decide what to build next using connected customer signals instead of guesswork.
Customer Intelligence: Centralize fragmented customer and competitor data into one queryable context.
Agent-Assisted Building: Give AI agents full product context so they ship higher-quality work faster.
Cross-Team Collaboration: Let the whole product team work from a single shared source of truth.
Competitor Tracking: Keep an indexed, up-to-date view of competitor activity for product decisions.