Planning-Execution Session Separation
- Entity ID:
ent-20260419-c3e5a7b9d1f3 - Type:
concept - Scope:
shared - Status:
active - Aliases: plan-then-execute split, Boris Tane separation pattern
Description
Workflow pattern (popularized by Boris Tane's 936-point HN post and codified in Crosley's orchestration system) in which one Claude session researches and plans (never implementing) and a separate fresh session receives the plan as structured input and implements (never planning). The sessions never share context. Architecturally this exploits that planning and execution compete for the same 200K context budget — separating them starts each session with full headroom. COORDINATOR_MODE (one worker per CPU, coordinator never tool-calls) is this pattern made first-class.
Key claims
- none yet
Relations
- Planning-Execution Session Separation --[related_to]--> Coordinator Mode