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Comparison

Marapone vs ChatGPT Enterprise.

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.

The reasoning, with every citation it rests on
The short version

Three sentences, if that is all you read.

When ChatGPT Enterprise is best

You want a strong general assistant for your office staff — drafting emails, summarising meetings, writing proposals — across many topics, construction among them.

When Marapone is best

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.

The honest middle

ChatGPT Enterprise for general writing, Marapone for the work that touches project documents. It is a reasonable split and the one we would suggest.

Side by side

What each one does, and doesn’t.

FeatureMaraponeChatGPT Enterprise
PricingPublished: $69–$1,199 a month, a seat ceiling per planPer seat; Enterprise is quoted
Who runs the model✓ Ours — no third-party AI vendorOpenAI; 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 projectProjects and custom GPTs
General writing assistantDrafts RFIs and letters from its findings only✓ Excellent
SetupMinutes — sign in and uploadHours
LeavingMonth to month; export everythingAnnual 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.

Which fits

Pick by the job, not the brand.

ChatGPT Enterprise is the better fit if
  • Your AI use is mostly general — writing, brainstorming, summarising.
  • You’re comfortable with OpenAI’s enterprise terms.
  • You don’t need a program that measures, checks or levels anything.
  • You want one tool for many tasks instead of several focused ones.
Marapone is the better fit if
  • You want the measuring, checking and levelling done by programs built for it, not typed into a chat.
  • You need to know no third-party AI vendor sees the drawings, and that nothing you upload trains a model.
  • You want the work kept with the project instead of re-explained every conversation.
  • You would rather pay one published plan price than per seat.
One-year cost example

What a year costs.

Marapone

$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.

Chatgpt enterprise (estimate)

~$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.

Sources
  1. 1. ChatGPT Enterprise is quote-only; the $45–$75 band is drawn from third-party reporting, and never from OpenAI. Checked 8 August 2026.
  2. 2. OpenAI, openai.com/chatgpt/pricing — published Business pricing. Checked 8 August 2026.

Prices move. If a figure here is out of date, tell us at general@marapone.com and we will correct it.

Running both

Keep ChatGPT for writing. Move the documents.

01

Keep it for the prose

Emails, proposals, meeting notes: a general assistant is good at them and there is no reason to stop.

02

Upload the documents instead of pasting them

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.

03

Check it against a job you know

Run a set you have already bid, and compare the findings with the answer you already have.

Before you decide

Questions buyers ask.

Is Marapone built on ChatGPT or OpenAI?

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.

Can’t I just paste the drawings into ChatGPT?

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.

Do my documents train a model?

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.

Is there a free trial?

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.

Already on ChatGPT Enterprise?

Keep it. Add Marapone for the documents.

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.