LiteLLM vs OpenRouter vs Portkey: Which LLM Gateway Fits an Enterprise? (2026)

Enterprise AI teams evaluating LLM gateways must balance model routing, cost tracking, access controls, auditability, deployment requirements, and governance of the downstream tools used by AI agents. LiteLLM offers extensive provider support and self-hosted flexibility but requires customer-operated infrastructure, while OpenRouter provides managed access to a large model catalog but has less emphasis on centralized MCP tool governance. Portkey, now incorporated into Palo Alto Networks’ Prisma AIRS AI Gateway, combines model routing, observability, MCP governance, and agent-level controls. Mintive positions its platform as a unified alternative that combines LLM routing with MCP tool governance, agent identities, role-based Virtual MCP bundles, security policies, cost attribution, SIEM integration, compliance-oriented audit records, and monitoring of supported local agent activity to address shadow AI risks. The comparison emphasizes that organizations with regulatory, security, or data-residency needs should assess deployment models, identity integration, policy enforcement, audit capabilities, contractual safeguards, and the extent to which a platform governs not only model requests but also agent access to enterprise systems.

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