Construction and Architecture plan

Project teams need code memory before site judgment.

Buy a construction and architecture library built around shared code, specification, permitting, and handoff context before adding project documents.

Multi-turn benchmark

Instruction retention varied across arms through 12 turns.

Three arms, same model (gpt-4.1-mini), same question set — no context, raw-accumulating, hosted crystal. At turn 12 the crystal sent 1,360 tokens; the raw arm sent 61,146 — 45× more, compounding every call.

Prompt size at turn 12

45× smaller

Crystal footprint vs raw-accumulating at the final turn. Crystal: 1,360 tokens. Raw accumulating: 61,146 tokens — 45× larger and growing every call.

Instruction retention

Mixed retention

A formatting rule planted at turn 1 was checked deterministically every subsequent turn. No-context retained it through all checkable turns. Crystal: 1 / 2 checkable turns held.

Answer quality — 12 turns

No degradation detected

All three arms produced substantive answers through turn 12 with no meaningful quality decline. The separating factors are prompt size and instruction retention, not raw answer quality.

How this was run. 12 turns, Construction and Architecture vertical, gpt-4.1-mini held constant across all three arms. Raw-accumulating arm: source corpus injected at turn 1, then full conversation history re-sent on every subsequent turn — the window grows every call.

Subscription

$4,000/mo for Construction and Architecture.

Workspace subscription for project teams that need a shared code, spec, and permitting reference layer before project-specific material is connected.

Monthly allowance

5,500,000 credits/mo

Up to 18M raw-token-equivalent shared built-environment reference coverage.

Start 7-day trial

Why this can cost less

Raw RAG can inflate every prompt with retrieved text. The crystal keeps shared operating judgment compact and reusable, so teams buy a monthly memory layer instead of repeatedly paying for larger, noisier context windows.

Context crystals

Representative coverage.

Each plan includes protected access to prepared industry memory across the recurring work areas below. Your team sees the benefit in chat while the library's source construction remains private.

Code and Permit

A code-orientation layer for building terminology, permitting questions, and jurisdiction-facing document expectations.

  • Building-code concept orientation
  • Permit-submittal language cues
  • Jurisdiction review topic taxonomy

Specifications

A specification reference layer for material language, scope boundaries, and trade coordination terms.

  • Material specification language checks
  • Trade scope relationship cues
  • Submittal and closeout terminology

Project Handoffs

A project coordination layer for drawing review, RFI language, and construction administration context.

  • RFI issue classification
  • Drawing coordination vocabulary
  • Construction administration review cues