ChatGPT Enterprise is a remarkable general-purpose model. It writes good emails. It does not, on its own, measure a drawing set, check a project manual against the sheets or level a dozen sub quotes. Here is the honest framing.
You want a strong general assistant for your office staff — drafting emails, summarising meetings, writing proposals — across many topics, construction among them.
You want programs that read your own project documents end to end, without copy and paste, and never hand them to a third-party AI vendor.
ChatGPT Enterprise for general writing, Marapone for the work that touches project documents. It is a reasonable split and the one we would suggest.
| Feature | Marapone | ChatGPT Enterprise |
|---|---|---|
| Pricing | Published: $69–$1,199 a month, a seat ceiling per plan | Per seat; Enterprise is quoted |
| Who runs the model | ✓ Ours — no third-party AI vendor | OpenAI; no training on business data, per its terms |
| Runs offline or air-gapped | × Hosted — documents are uploaded to us | × Hosted |
| Built for construction documents | ✓ Takeoff, code audit, spec conflicts, bid levelling | × General-purpose |
| Keeps the work with the project | ✓ Documents and findings held per project | Projects and custom GPTs |
| General writing assistant | Drafts RFIs and letters from its findings only | ✓ Excellent |
| Setup | Minutes — sign in and upload | Hours |
| Leaving | Month to month; export everything | Annual commitment on Enterprise |
What we say about ChatGPT Enterprise comes from its public material. If we have it wrong, tell us at general@marapone.com and we will correct it.
$4,990–$11,990/yr
Pro opens all eight programs for up to five seats at $4,990 billed yearly, or $499 a month. Firm takes it to twenty seats with priority processing at $11,990 yearly. Not everyone in a 30-person shop needs a seat; the estimators and PMs do.
No implementation fee, no per-module pricing, and on monthly billing no commitment at all. Priced at today’s published rates.
~$60/seat/mo
OpenAI does not publish an Enterprise price — it is quote-only, and reported 2026 deals cluster around $45–$75 per user per month on annual commitments.1 If 30 seats is your whole company, note that Enterprise is generally sold at much larger minimums; ChatGPT Business is published at $20/user/month billed annually and may be the fairer comparison.2
30 seats × $60 × 12 = ~$21,600/yr, if you land at the middle of that range.
* Different categories of tool. Many shops run both — the cost stack is additive.
Prices move. If a figure here is out of date, tell us at general@marapone.com and we will correct it.
Emails, proposals, meeting notes: a general assistant is good at them and there is no reason to stop.
The drawing set to Blueprint Auditor, the manual to SpecChecker, the quotes to Bid Leveler. Each reads the whole file, not the part that fits in a message.
Run a set you have already bid, and compare the findings with the answer you already have.
No. MaraponeAI is our own model, fine-tuned on open-weight foundation models and run on infrastructure Marapone operates. No OpenAI, Anthropic or Google API is anywhere in the path, and your drawings are never handed to one.
You can, and for a question about one page it may be fine. It won’t cite the sheet a number came from, it won’t produce a takeoff or a levelling matrix as a file, and it will give a confident answer it invented. The programs are built for one job each, print the sheet and clause behind every finding, and return a structured file instead of a paragraph.
No. Nothing you upload is used to train any model, ours included. Your documents sit in a workspace only your account reaches, and you can export or delete them from your dashboard at any time.
Field is free for fourteen days — Blueprint Auditor and the AI Estimator on your own drawings, a card at Stripe to start and nothing charged until day 15. Solo has a seven-day trial of the AI Estimator on its own. One trial runs per account; Crew, Pro and Firm have none. See the five plans.
We are a complement to general AI tooling, not a replacement. Put one real drawing set through Field for fourteen days and see where it slots in.