Metacache proposal: models build reusable reasonlets instead of answering
PurpleDragon99 · reddit · 2026-09-30
A long-form essay proposes 'Reasoning by Construction' as the next step beyond monolithic models and manually-built compound systems. Key points:
- Monolithic models are unpredictable (same question, different answers) and hard to change (weights not editable; fine-tuning can break things).
- Compound systems — narrow agents orchestrated by code — combine customization with predictability; Jev, a small typed-decision agent, exemplifies this.
- Next step: instead of answering directly, the model builds and runs a compound system during reasoning, returning both the answer and the system — a 'reasonlet.' Saved, reusable reasonlets ('metacache') can be re-run on new inputs or edited code without re-querying the model.
- Providers could cache reasonlets across users to save compute.
Contrasted with the 'world model' research direction: same goal of inspectable reasoning, but using only methods available today.
Related event: Reasonlet: Models Building Reusable Compound Systems While Reasoning(2 posts)→
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