Claude Enterprise alternatives compared (2026)

The alternatives buyers weigh most are Harriet, ChatGPT Enterprise, Microsoft 365 Copilot, Gemini Enterprise, GoSearch and WorkLLM. ChatGPT Enterprise, Copilot and Gemini Enterprise each come from one large vendor. Harriet, GoSearch and WorkLLM work across model vendors. Harriet is the one built to keep Claude for everyone, with no seat minimum, EU data residency, spend caps per team and hands-on help with the rollout.

At minimum, the controls you would buy Claude Enterprise for. That means single sign-on and automatic provisioning, an audit log you can export, admin control over which models each team uses, and a clear answer on where data is stored. Beyond that, look for spend caps that stop overspend rather than report it, the freedom to change models without a migration, and someone who will help your teams get their first workflows working.

For most mid-sized companies, yes. Both give every employee an assistant with SSO, admin controls and no training on your data. Claude Enterprise manages Claude. Harriet manages Claude, ChatGPT, Gemini and open models from one place, with per-team policies, budget caps and audit logs. Anthropic's own compliance surface, such as customer-managed keys, lives only inside Claude Enterprise.

Yes. Claude runs alongside ChatGPT, Gemini and open models through one router, on your own Anthropic keys or on managed credits. Admins decide which teams get which models.

Anthropic's privacy page states that data is stored in the US, as of September 2026. Anthropic lists Europe residency for Claude on AWS Bedrock, Google Cloud Vertex and Microsoft Foundry, which are cloud platforms rather than the Claude Enterprise app. Harriet offers EU data residency and keeps Claude available alongside the other models.

Harriet has no seat minimum. Gemini Enterprise starts at one seat, and WorkLLM publishes no minimum on its paid plans. OpenAI and Microsoft do not publish a seat minimum for ChatGPT Enterprise or Microsoft 365 Copilot. Claude Enterprise starts at 20 seats self-serve and 50 through sales.

Claude Enterprise charges $20 a seat a month, billed annually, with a 20-seat self-serve minimum, and model usage billed on top (as of September 2026). Harriet has no seat minimum and no annual commitment. Pricing is quoted per organization for the people actually provisioned, plus model usage through your own keys or managed credits.

Claude Team suits a small group that only wants Claude, from 2 seats at $20 to $25 a seat. It leaves out audit logs, SCIM provisioning and data retention controls, caps at 150 seats, and governs only Claude. Harriet adds that governance across every provider at once.

Same shape, different vendor. ChatGPT Enterprise gives you OpenAI models with enterprise controls on annual plans, and OpenAI does not publish its price. Its console governs only OpenAI. Harriet is the layer above both, one place to provision, budget and audit AI across vendors.

It can be, if your company already runs on Microsoft 365. Copilot is a $30 a user a month add-on to a qualifying Microsoft 365 plan, on an annual subscription, and it offers OpenAI and Anthropic models. Microsoft states that Anthropic models are outside the EU Data Boundary and off by default for EU and UK tenants, so check that before you count on Claude there.

Yes. Harriet runs on your own Anthropic keys, so any committed-spend deal you already have keeps working, and Claude stays available to the teams that use it. You can also use managed credits instead, for one invoice across every model.

No. Harriet is an independent London-based platform, SOC 2 Type II certified with EU data residency available. Claude and Claude Enterprise are Anthropic products, ChatGPT is OpenAI's, Copilot is Microsoft's and Gemini is Google's.