ChatGPT Enterprise is many UK businesses’ first thought for enterprise AI — but it’s a single-vendor chat product, which isn’t the only model. Here’s an honest comparison with osFoundry for 2026. (dgm implements osFoundry as an independent partner — a separate company’s product; we’ll be fair to both.)
At a glance
| ChatGPT Enterprise | osFoundry | |
|---|---|---|
| What it is | Hosted chat tool (OpenAI) | Standalone AI platform |
| Models | OpenAI only (single-vendor) | Model-agnostic, bring-your-own-key |
| Pricing | Per-seat (not public, seat min) | Usage-priced, no per-seat fees |
| Scope | Chat + OpenAI agent features | Chat + agents + apps + knowledge |
| Hosting | OpenAI cloud + enterprise controls | Cloud (US/EU/JP) or self-host |
Pricing as of 2026 — confirm with each vendor.
What each is
ChatGPT Enterprise is OpenAI’s enterprise ChatGPT — a hosted chat tool on OpenAI’s models, with enterprise controls (SSO, SCIM, no training on your data), sold per-seat.
osFoundry is a model-neutral platform that consolidates chat, agents, apps and knowledge, usage-priced with no per-seat fees, and self-hostable.
The key difference: single-vendor vs model-agnostic
ChatGPT Enterprise runs on OpenAI’s own models — effectively single-vendor. osFoundry is model-agnostic via bring-your-own-key: use OpenAI, Anthropic, Google, Mistral, DeepSeek and others, and route per task. If avoiding single-vendor dependence and using the best model per job matter, that’s decisive. (See how to avoid vendor lock-in.)
Scope
ChatGPT Enterprise centres on chat (plus its own agent and tool features). osFoundry consolidates chat + agents + internal apps + knowledge + code — positioning itself to replace a hosted chat tool and more. (osFoundry’s own compare pages claim it can “replace your hosted chat tool entirely” for most teams.)
Data and residency
Both don’t train on your data. ChatGPT Enterprise offers enterprise data controls with regional options rolling out; osFoundry publishes US/EU/JP regions (no UK region) and is self-hostable in your own UK/EU cloud — the most direct route for strict UK residency. (See data residency.)
Pricing model
ChatGPT Enterprise is per-seat (cost scales with people); osFoundry is usage-priced (cost tracks use). For variable or collaborative use, usage pricing is often more predictable.
Who each is best for
- ChatGPT Enterprise — teams wanting a polished, familiar OpenAI chat experience with enterprise controls.
- osFoundry — businesses wanting consolidation, model flexibility, usage pricing, and data control via self-hosting.
Honestly, they can be complementary.
Which should a UK business choose?
If a best-in-class OpenAI chat experience is the priority, ChatGPT Enterprise fits. If you want a model-neutral, usage-priced, self-hostable platform that consolidates tooling, osFoundry fits — and dgm can help you evaluate and implement.
dgm is an independent integration partner with zero integrations so far. To compare these for your situation, book a consultation with dgm. General information; verify current vendor pricing and terms.