FACT — deployment architecture (from Anthropic's administrator guide). The hierarchy is three levels:
- Tenant — exactly one per agency. Holds the connection to the agency's identity provider for SSO, automatic provisioning, verified email domains, and the pool of credits and seats issued by Anthropic. Managed by a short list of tenant administrators.
- Organizations — each with its own owners, members, seat assignments, configuration and spend caps, all sharing the tenant's single SSO connection. Split recommended where separate billing, separate bureau-level usage reporting, or different product settings are needed.
- Users — each belongs to exactly one organization. A role determines what they can manage (User / Owner / Primary Owner); a seat tier determines how much they can use (a named bundle of usage limits). A user with no seat can sign in but cannot send messages.
FACT — billing mechanics. A billing account holds a prepaid credit balance (a dollar amount drawn down as people use Claude) and a pool of seats (a fixed number of seats in each tier). Every organization links to exactly one billing account; several organizations may share one. Tenant administrators divide each billing account's seat pool among the organizations it funds and can set per-organization spend caps against a shared balance.
FACT — identity and access. Users arrive by SSO (Microsoft Entra, Okta or ADFS named) or by SCIM directory provisioning. Routing rules are the only way in: a new person who matches no rule cannot sign in. Routing rules are re-evaluated on every sign-in, so a rule change can move someone between organizations without a migration.
FACT — where inference happens. Anthropic's help centre is explicit: "Claude for Government is Anthropic's FedRAMP-High authorized product. It runs in the Claude Desktop app (Chat and Claude Code), connected to a dedicated government environment inside Palantir's FedRAMP High boundary." Independently corroborated: the April 2025 Palantir press release, reported by FedScoop, states Anthropic would use Palantir FedStart to make Claude available to government at FedRAMP High and DoD IL5, with Google Cloud hosting the Claude application on its FedRAMP High / IL5 accredited commercial cloud infrastructure (quote attributed to Karen Dahut, CEO of Google Public Sector).
FACT — where data stays. Conversation history stays local on the agency-managed device. Usage exports are metering data only, which Anthropic says lets agencies "answer ATO and IG requests without moving sensitive material". The application deploys through standard agency MDM platforms.
FACT — who holds the authorisation — the critical distinction.
| Route | Who holds the authorisation | What the agency's ATO covers | FedRAMP level |
|---|
| Claude for Government (this story) | Not Anthropic. Anthropic's own words place the environment "inside Palantir's FedRAMP High boundary." | The Anthropic-hosted government environment, inherited via the FedStart accreditation | FedRAMP High (Class D) via partner boundary |
| Claude API via Amazon Bedrock in AWS GovCloud | AWS | The agency's deployment on AWS GovCloud | FedRAMP High |
| Claude API via Vertex AI with Assured Workloads | Google Cloud | The agency's deployment on Vertex | FedRAMP High |
| Claude API from Anthropic directly | — | Not available: "The Claude API from Anthropic (including Claude Platform on AWS) is not FedRAMP authorized today" | None |
| Claude Enterprise | — | "independently assessed against federal security controls but isn't FedRAMP authorized today" | None (NIST 800-171 attestation instead) |
FACT — the FedRAMP Marketplace records, retrieved directly from fedramp.gov:
- Anthropic / "Claude", Package ID
FR2633053633 — Phase: Initial Implementation. Status: Not yet certified. Authorizations: 0. Certification Profile: Type 20x, Path Program, Class Unknown. Certified Since: N/A.
- Palantir Technologies / "Palantir Federal Cloud Service – Supporting Services (PFCS-SS)", Package ID
FR2315464863 — Phase: Ongoing Certification. Status: FedRAMP Certified, as of 11/19/2024. Authorizations: 6. Certification Profile: Type Rev5, Path Agency, Class Class D (High).
INTERPRETATION — and the honest limit of what that proves. The most defensible reading is the one Anthropic's own help centre gives: Claude for Government is delivered inside a Palantir-authored, Class D (High) boundary on Google Cloud accredited infrastructure, so an agency relies on an inherited accreditation through a delivery partner, not on an Anthropic-owned program-level authorisation. FedScoop independently reported in April 2025 that while Anthropic had "previously indicated it's interested in pursuing its own FedRAMP authorization", the FedStart announcement showed "the company is still pursuing the second strategy in the meantime" — i.e. running inside an already-authorised provider's environment.
But two alternative readings remain live and I cannot exclude them from public evidence: (i) the FR2633053633 20x entry may be Anthropic's own parallel program-track effort that has not yet been classed, and the FedStart-hosted environment may be tracked under a different package not surfaced in the listing retrieved; (ii) Marketplace records can lag operational reality. Anthropic's marketing phrasing — "Anthropic's FedRAMP-High authorized product" — and the Marketplace record showing 0 authorizations and Class Unknown are not fully reconcilable from public sources alone. I flag this as an unresolved tension rather than resolving it in Anthropic's favour.
FACT — scope limits inside the boundary. Anthropic's own comparison table marks, for Claude for Government: FedRAMP High Included; DoD IL5 Not included; Classified In pilot. Claude Enterprise: not included on all three.
FACT — terminology precision. "FedRAMP High" is the legacy name for the highest of the three FedRAMP impact levels, derived from a FIPS 199 categorisation where High means a breach could have severe or catastrophic consequences; it is the baseline used for highly sensitive unclassified work. Since the FedRAMP Consolidated Rules for 2026, impact levels have been replaced by Certification Classes A–D and "Authorization" has been renamed "Certification". The FedRAMP Marketplace now displays the equivalence literally: Palantir PFCS-SS is shown as "Class D (High)". Anthropic's GA marketing copy still uses the legacy "FedRAMP High authorized" phrasing, and its own Marketplace entry displays Class: Unknown. Readers reconciling vendor copy against federal records should expect that vocabulary mismatch.