Two different jobs, not two options
The mistake is treating this as a choice between one product and another. Claude and ChatGPT are personal assistants: they help a person get through their own work faster. DealSage is a firm-wide system: it holds the institution's knowledge so the whole team, and every assistant they use, can draw on it. One is about the individual, the other about the firm. Most firms will run both, and the interesting question is not which to pick but where the line sits.
When Claude or ChatGPT is the right tool on its own
For a small team, often it is. A one or two person search fund, or an individual who can hold the whole deal context in their own head, can get a genuinely long way with Claude or ChatGPT as a daily driver. And even inside a larger firm, every investor should have one of these as their personal assistant, for drafting emails, generating a quick report, turning notes into something usable. That personal layer is real and here to stay. If your needs stop there, buying anything heavier is a waste of money.
When you need the layer underneath
It stops being enough as the team and the history grow. Once you have several people, years of deals, and knowledge that needs to survive someone leaving, a personal assistant has a hard ceiling: it has no memory of your firm, no connection to your CRM or data room, and no way to tell which version of a document is current. Switching to a "better" model does not fix that. As the case for why the model isn't the constraint and the argument for a system of record both lay out, the jump in value comes from whether your data is structured and connected, not from which logo sits on the chat window.
DealSage feeds the assistant your team already uses
This is the part that matters most, and it is why the two are not in competition. DealSage is the structured store and log of your firm's own knowledge, Deal, Contact, Organisation and custom objects, each field traced back to its source, whether you are screening deals for a private equity fund, tracking relationships at an investment bank, or running diligence for a VC portfolio. It connects over MCP so Claude, ChatGPT or whichever model your team prefers can query that knowledge base directly, and it also reaches you through email and a live-linked Excel plugin. Your team keeps its assistant. What changes is that the assistant can finally see the firm's actual data instead of a blank page. See how the platform is built for the full picture.