software-architecture

OpenCode and Pi (via pi-claude-code) can both use a local Claude Code login. OpenCode keeps a Claude Code session open across tool calls, while Pi runs a fresh worker for each step and replays the transcript.

Code mode lets the model write a script that calls tools. Pi Durable makes that script resume after a restart without rerunning finished calls. What code mode is, how durable replay works, and when to reach for it.

Pi Durable's building blocks: persisted tasks, conversations, application state, and agents whose work can survive the process that started it.

A state-machine architecture in which deterministic code owns the plan and the facts, while Jev supplies bounded judgment only at decision branches.