Ontu and general-purpose assistants like ChatGPT and Claude
ChatGPT and Claude are flexible assistants that help with almost any kind of work. Ontu is built on the same kind of models, but it adds the structure a deal team needs around them: projects, correspondence, citations and a person reviewing every message.
Ontu and ChatGPT and Claude, side by side
Ontu
ChatGPT and Claude
What it is
Ontu
A purpose-built workspace for deal and advisory teams, running on models from Anthropic and OpenAI.
ChatGPT and Claude
A general-purpose chat assistant that can connect to apps such as Google Drive, SharePoint and Slack.
How work starts
Ontu
Correspondence arriving in the project starts the work, and people can also ask directly.
ChatGPT and Claude
Someone opens a chat and asks.
Structure
Ontu
Projects with a shared mailbox, call capture, files and tasks already in place.
ChatGPT and Claude
A general workspace that each team shapes for its own use.
Model choice
Ontu
Claude and OpenAI models, selectable per request. Partner seats set which models the firm allows.
ChatGPT and Claude
Each product runs on its own vendor's models.
Data handling
Ontu
Content sent to model providers is never used to train their models. Ontu isn't yet SOC 2 or ISO 27001 certified.
ChatGPT and Claude
OpenAI states that business data isn't used for training by default on its Business and Enterprise plans.
Pricing
Ontu
Per seat, billed annually, with no meter on AI use. No public list price.
ChatGPT and Claude
Per-seat business plans. Check each vendor for current pricing.
Choosing between them
Choose ChatGPT and Claude if
- —You want one flexible tool for many kinds of work, not only deal correspondence.
- —Your team is comfortable setting up its own prompts, projects and connections.
- —You need broad coverage of tasks outside diligence and client work.
Choose Ontu if
- —Your work is project correspondence and you want it set up for that from the start.
- —You want drafts to appear on their own, grounded in the project's documents and prior answers.
- —You want every draft to show its sources, flag what it can't support, and wait for a person before anything is sent.
Using them together. Many teams use a general assistant for open-ended thinking and Ontu for the structured, project-based work where every reply needs a source and a reviewer.
Last reviewed October 2026. What we say about ChatGPT and Claude comes from its own public materials and is limited to what they state. Products change, so check ChatGPT and Claude directly before deciding. If anything here is out of date or wrong, email [email protected] and we'll correct it.
Sources
See Ontu on your next project
A short walkthrough with your deal team. No slideware, just the product on a real workflow.