# Specul · Speculative Speculation > A layered decision-atlas site group for AI users. Each layer answers a different question; the layers cooperate rather than compete. ## Site group structure Specul is not a single directory site, but a group of atlas sites **divided by layer**: | Layer | Site | Question it answers | |---|---|---| | Home | https://specul.com/ | Main entry and philosophy | | Concepts | https://learn.specul.com/ | What are these terms, and why should you know them? | | Products | https://agent.specul.com/ | Which agent / runtime / tool should you use? | | Models | https://models.specul.com/ | With dozens of quantized builds of the same model, which should I download? | | Practice | https://vg.specul.com/ | Making games with AI: which steps changed, which did not? | | Directory | https://nav.specul.com/ | AI website directory, 527 entries / 11 categories | ## About each site ### Learn AI — https://learn.specul.com/ 185 terms arranged into six stations by "what to learn first" (Getting In / Hands On / Going Deeper / Under the Hood / Running It / Choosing Right); 3 curated learning paths with checkpoints; 281 source entries; English coverage 185/185. Every term can be traced back to its original source, **unknown is written as unknown**, and there is no overall ranking. ### Agent Atlas — https://agent.specul.com/ 52 profiles across three divisions (agents 27, harness 15, tools 10), compared across a fixed set of 8 dimensions. Fixed eight-dimension comparison (the tools division adds three more: transport / auth / scope). **No overall ranking** — a weighted total hides trade-offs, and trade-offs are the decision basis. ### Models Atlas — https://models.specul.com/ Index of locally deployable quantized models: 11 series / 16 model repos / 132 quant variants / 1253 GGUF files, from 55 quantizers. Work backwards from VRAM to which GGUF variant to download; file sizes are measured values from release pages, licenses quoted verbatim entry by entry. **No benchmarks, no quality or speed conclusions, no hosting of any weight files.** ### AI Game Dev — https://vg.specul.com/ 17 entries (stage 12 · keyword 5) + 5 engine profiles + 2 cross-cutting pages, building 27 pages. Includes a boundary-decision table and a five-stage teaching path. ### Directory — https://nav.specul.com/ 527 AI-related websites (entries on the site, excluding extended domains), 11 categories, every link verified. Each site is systematically introduced by "what it does and who it suits". Verification dates and probe methodology are written on the page, **probe failures do not declare death** — better to miss than to misjudge. ## Shared methodology The atlas sites share one methodology: 1. **Fixed-dimension comparison** — dimensions do not change per object, so cross-comparison stays possible 2. **Every judgment carries an official source** — no impressions; links point to release pages or source code 3. **Unknown is a legitimate answer** — if it cannot be found, say so; never invent 4. **No overall ranking** — a weighted total hides trade-offs, and trade-offs are the decision basis 5. **Index only, never host** — no copying or redistributing third-party content The Models site additionally observes: quote licenses without interpreting them; skip gated repos rather than working around them. ## Core criteria - **Offline / self-hostable**: all data public, sites statically hosted on GitHub Pages - **Reproducible**: field sources, processing rules and derivation formulas all public (see each data repo `README.md` / `METHODOLOGY.md`) - **Audit-enforced**: builds abort on non-compliant data; "close enough" is not allowed - **Each of the five content repos has its own schema and validator**: field schema `SCHEMA.md`, non-compliant entries fail the build ## Data repos - Terminology data layer: https://github.com/speculcom/ai-glossary - Agent data layer: https://github.com/speculcom/ai-agent-guide - Models data layer: https://github.com/speculcom/ai-quantized-llm - AI game dev data layer: https://github.com/speculcom/ai-vibe-gaming - Website directory: https://github.com/speculcom/ai-sites-directory ## Legal The line between own content and third-party content: https://specul.com/legal.html This site does not provide legal advice; for third-party model licenses, refer to the original text on each Hugging Face release page. ---