Pi Durable
#24 in Personal AI AssistantsEarendil · 4× · last seen Oct 03, 2026
Pi Durable is an experimental, Open Source package from Earendil (the company founded by Armin Ronacher and Colin Daymond Hanna that acquired the coding agent Pi) for building durable, agentic applications beyond the terminal. It ports Pi's core logic to TypeScript and externalizes all stateful components, allowing tasks and conversations to be persisted as checkpoints and resumed exactly after crashes or restarts. The package orchestrates multiple parallel conversations, supports branched sessions as well as multiple simultaneously controlling clients, and uses SQLite or JSONL as storage backend. It is distributed via npm, runs in any JavaScript runtime environment (including Node, Bun, Cloudflare Durable Objects) and is
Features
| Autonomy Level | Checkpointed, crash-resilient agent: automatically resumes from last exact state after process failure or restart |
| Channels | Multi-surface: several clients can watch and steer the same conversation simultaneously, e.g. Slack channels with parallel thread branches |
| License | MIT license, open source |
| Modalities | Text, plus integration of image models and non-LLM decision models via Codemode |
| Platform | Runs in any JavaScript runtime, including Node.js, Bun, and Cloudflare Durable Objects |
| Price | Free / open source (MIT-licensed npm package); model and infrastructure costs separate |
| Release Date | October 1, 2026 (released alongside Pi 1.0) |
| Tool/MCP Integrations | Native MCP support via Codemode (JS sandbox), including decision models like Jev and image models |