ChatGPT Company Knowledge vs Claude: How to Make AI Know Your Company (2026)
Comparison · · Published October 2026 · 7 min read
By Ashwin Gopinath, CEO
Disclosure: Sentra makes one of the products compared here. We checked each vendor's own documentation and pricing, link every source, and name the better choice when it is not Sentra.
TL;DR
ChatGPT company knowledge, launched by OpenAI in October 2025 for Business, Enterprise and Edu plans, lets ChatGPT search connected apps such as Slack, SharePoint, Google Drive and GitHub and answer with citations and each user's permissions. Claude offers the same idea through Projects, enterprise search on Team and Enterprise plans, and remote MCP connectors. Both work by searching your tools when you ask, which makes them close cousins of the dedicated enterprise search tools, scoped to one assistant. Neither keeps a record of what your company decided, notices when a decision changes, or shares that context with other AI tools. Sentra is the managed organization memory that does: it captures decisions and commitments from Slack, email and meetings, keeps each fact with its source and date, and gives the same memory to Claude, ChatGPT, Cursor and your own agents over MCP. In short: Sentra makes Claude, and ChatGPT, know your company.
What is ChatGPT company knowledge?
OpenAI introduced company knowledge on 23 October 2025 for ChatGPT Business, Enterprise and Edu.
- How it works: a version of GPT-5 searches several connected sources and answers with citations, respecting each user's existing permissions.
- Connectors: examples include Slack, SharePoint, Google Drive, GitHub, HubSpot and Intercom, plus custom apps built with MCP.
- How you use it: it is now a plugin, invoked with @Company Knowledge or from the tools menu, according to OpenAI's help center.
- Admin controls: Enterprise and Edu admins control access with role-based permissions.
OpenAI's current help article, checked on 5 November 2026, adds the operational detail. Company Knowledge is a plugin that replaced the earlier company knowledge option in chat, and to use it the plugin must be installed for you and at least one supported source must be connected and authorized. Apps are enabled by default in ChatGPT Business, while new Enterprise and Edu workspaces start with a selected set. ChatGPT may also use the plugin without an explicit @ mention. A member can only retrieve what they can already reach through the app connection, admins can require SSO and SCIM, and OpenAI does not train on Business, Enterprise or Edu workspace data by default.
How Claude knows your company
- Projects: a shared knowledge base and instructions per project, which Team and Enterprise members can share with view or edit rights.
- Enterprise search: on Team and Enterprise plans, owners connect a documents source and a chat source, and Claude searches them through MCP. Anthropic says no data from connected services is indexed in its systems.
- Custom connectors: any remote MCP server can be added, on all plans, and Research can call connector tools during a task.
- Claude Code: reads repository files and CLAUDE.md, and can connect to MCP servers for company context.
Anthropic's connectors documentation, checked on 5 November 2026, fills in how this works in practice. Custom remote MCP connectors are available on every plan, with Free users limited to one. On Team and Enterprise an Owner or Primary Owner enables a connector for the organization, and each person still authenticates individually, unless the Enterprise-managed auth beta lets the organization authorize once. Claude inherits each person's permissions from the connected service, owners can set each connector's actions to Always allow, Needs approval or Blocked, and once an app is connected Claude can bring it into a conversation without being asked.
Our guide to Claude memory for teams covers what persists between sessions and what resets.
Claude Tag: company knowledge inside Slack
Claude's newest route to company knowledge is Claude Tag, the Slack agent in beta on Team and Enterprise plans, which replaced the earlier Claude app in Slack on 3 August 2026. Unlike chat connectors, it works under its own identity with tools an admin grants per channel, and it remembers: each channel has its own notes, and workspace notes saved from public channels are read everywhere in the workspace. That makes it the closest thing either vendor offers to shared team context. Its memory is still built from Slack, so decisions from meetings and email reach it only if someone posts them, and ChatGPT or Cursor cannot read it.
ChatGPT company knowledge vs Claude vs a company memory
| Sentra company memory | ChatGPT company knowledge | Claude (Projects, enterprise search, connectors) | |
|---|---|---|---|
| How it knows the company | Captures facts continuously from Slack, email, meetings and tools | Searches connected apps when asked | Searches connected apps or project files when asked |
| Knows what changed | Yes; each fact has a time range and what replaced it | No; finds the newest document | No |
| Captures meetings and decisions | Yes, including meeting notes and commitments | Only if written in a connected app | Only if written in a connected source |
| Works across AI tools | Claude, ChatGPT, Cursor and custom agents over MCP and REST | Inside ChatGPT | Inside Claude |
| Permissions | Carried from each source tool | Each user's app permissions | Each user's connector permissions |
| Best for | Companies using several AI tools and agents | Teams standardized on ChatGPT | Teams standardized on Claude |
The difference that matters: assistant search answers the question you asked from what was written. A company memory also answers the questions you did not know to ask, such as whether the plan you are about to act on was changed on Thursday.
How that works is documented on Sentra's mechanism pages: how it keeps company memory current when a decision changes, how it turns meetings into memory, how it enforces permissions on every fact, and how Claude, ChatGPT and Cursor reach it through the MCP server and API.
How to make Claude know your company
1. Connect Sentra as a connector. In Claude Code it is one command: claude mcp add --transport http sentra https://api.sentra.app/mcp/. In Claude on the web or desktop, add Sentra from the connector list or as a custom connector at https://api.sentra.app/mcp/.
2. Authorize once. Claude reads company memory with your own permissions.
3. Ask about decisions, not documents. For example: what did we agree with this customer, and has it changed since?
The step-by-step guide to connecting Claude to organizational memory over MCP covers every client and the admin rollout.
How to make ChatGPT know your company
- Start with company knowledge for search across the apps ChatGPT connects to.
- Add a company memory over MCP so ChatGPT works from the same current decisions and commitments as your other tools.
- Keep one source of truth for both assistants, so a ChatGPT user and a Claude user get the same answer.
Frequently Asked Questions
What is ChatGPT company knowledge?
It is a ChatGPT feature for Business, Enterprise and Edu plans that searches connected apps such as Slack, SharePoint and Google Drive and answers with citations, using each user's permissions. OpenAI launched it in October 2025.
How do I make Claude know my company's context?
Use Projects for shared files, enterprise search or connectors for your tools, and connect a company memory such as Sentra over MCP so Claude knows current decisions and commitments, not just documents.
Is ChatGPT company knowledge better than a dedicated company memory?
They do different jobs. Company knowledge searches what was written in connected apps. A company memory keeps track of decisions and changes over time and shares them across every AI tool.
Can Claude, ChatGPT and Cursor share one company memory?
Yes, through MCP. Sentra exposes the same memory to all of them, so every tool works from the same current facts.
Does Sentra make Claude know your company?
Yes. Sentra connects to Claude as an MCP connector and gives it the company's decisions, commitments and context, with your permissions.
Which Sentra is this?
Sentra at sentra.app is the managed organization memory for teams and AI agents. It is unrelated to Sentra.io, the data security company.
Which ChatGPT plans include company knowledge?
ChatGPT Business, Enterprise and Edu. The Company Knowledge plugin has to be installed for you and at least one supported source connected and authorized, and an admin may need to enable the plugin or a source your workspace does not yet allow.
Does ChatGPT company knowledge work with custom MCP servers?
Yes. OpenAI says the plugin can discover supported custom MCP servers when those apps are available to you in ChatGPT, with workspace access, app permissions and provider authorization still applying. That is how a company memory such as Sentra can sit behind ChatGPT as well as Claude.
Does OpenAI or Anthropic train on company knowledge?
OpenAI says it does not use ChatGPT Business, Enterprise or Edu workspace data to train its models by default. For Claude's enterprise search, Anthropic says no data from connected services is indexed in its systems. Check each vendor's current data terms for your plan.
Can Claude search Slack and Google Drive for company answers?
Yes, through connectors and enterprise search on Team and Enterprise plans, with Claude inheriting each person's permissions in the connected service. In Slack itself, Claude Tag works in channels with the tools an admin grants and keeps channel and workspace notes.
Is Claude Tag Anthropic's version of company knowledge?
It is the closest one. Claude Tag joins Slack channels, uses tools an admin provisions per channel, and remembers per channel and per workspace. ChatGPT company knowledge searches connected apps when asked and does not keep memory of its own. Both stay inside their own product, which is why companies running several AI tools put a shared memory underneath.
Do ChatGPT and Claude give the same answer about our company?
Not reliably. Each searches its own set of connected apps with its own connector configuration, so two people using different assistants can get different answers to the same question. Connecting both to one company memory over MCP is the way to make them agree.