Open-source AI infrastructure
Compare Everstack and Bifrost by Maxim AI on licence terms, which capabilities are enterprise-only, raw gateway performance, and scope past the request.
Bifrost's pricing page puts guardrails, Cluster Mode, Adaptive Load Balancing with real-time health monitoring, RBAC, audit logs, log exports, SSO via SAML and OIDC, and vault integrations on the Enterprise tier. Putting high availability and guardrails behind the paid tier makes the free build a development gateway more than a production one. Everstack ships those under Apache-2.0.
Bifrost is Apache-2.0 across the repository with no enterprise directory, verified against its LICENSE file, with 7,675 GitHub stars and commits landing daily. So is Everstack. Both projects keep the source tree clean and put commercial differentiation in the product tier instead.
Bifrost claims under 100 microseconds of overhead at 5,000 requests per second, and 50x faster than LiteLLM. We have not independently benchmarked that and will not repeat or dispute it as fact. If proxy overhead is a hard constraint for you, measure both against your own traffic rather than trusting anyone's table, including this one.