Learning Hub

Interactive learning apps — each one self-contained, hostable, and readable in the browser.

Apps

Harness Research

21 areas · 35 problems × 206 techniques · 259-paper ledger · lifecycle×problem map · guardrails · open frontiers · creative agenda · self-analysis

agent engineering259 papers35 deep-diveslifecycle map

Test-Time Training

Can a model learn during inference? Four classes, nine mechanisms, evidence tables, failure modes, deployment-tier verdict, 8-question self-test.

LLM internals11 papers9 mechanismsself-test

Muscle & Nutrition

Interactive 3D body map (Three.js) · 24 exercises with muscle targeting · 8 movement patterns · macros, MPS, calories, supplements, myths debunked.

exercise science18 muscles24 exercises3D body

Sim Lab: Lifecycle & Context

Two interactive simulations — step through one agent turn stage-by-stage with problems firing live, and watch context-window compaction silently erase constraints.

simulationsagent lifecyclecompactioninteractive

Sim: KV Cache & Prefix Reuse

Break a provider's prefix cache with one character — cold starts, hits, misses, a fingerprint that flips amber before you send, and the fix: restore byte-stability, watch hits return.

simulationKV cacheTTFTinteractive

Sim: Model Routing & Cost

Drag traffic sliders and watch thousands of dollars appear or vanish — frontier vs fast tiers, the smart-router ladder, and the break-even point at your own hard-task mix.

simulationcost calculatorroutinginteractive

Concept graph

How the ideas connect. Click nodes to jump to the relevant app.

Agent Harness Engineering Context Management compaction · injection · ledger Self-Improvement Loop journal → distill → calibrate Test-Time Training can weights change during inference? Guardrails implementation + evaluation Memory & Metrics recall@k · as-of · queueing Serving Reality LoRA swap · KV trap · tiers Long-Run Durability resume · budget · exploration Open Frontiers 68 "no successor" targets TTT Mechanisms TTT layers · Titans · In-Place solid = contains/subsumes · dashed = cross-cutting tension
green = deployable today yellow = partial / niche red = research frontier