Best AI Gateway for Enterprise Teams in 2026: Full Comparison

Every AI gateway on the market can route a request to an LLM and log the response. That part of the job has been commoditized for a while now. The comparison gets harder for engineering leaders and platform architects evaluating these tools for a Fortune 1000 rollout, where the questions aren't about basic routing but about whether the CISO signs off, whether data ever leaves the company's network, and whether the platform can be procured and deployed the way the rest of enterprise infrastructure is.

Three platforms come up repeatedly in that evaluation: TrueFoundry, Portkey, and LiteLLM. TrueFoundry was built from the ground up for VPC and on-prem deployment alongside model serving. Portkey is a widely adopted hosted gateway with a genuine enterprise tier. LiteLLM is the open-source proxy nearly every engineering team has tried at least once, with an enterprise license layered on top.

This comparison is written for the buyer running that procurement process, not for a solo developer picking a weekend project. Everything below reflects publicly available product documentation and pricing at the time of writing.

The evaluation dimensions that separate enterprise gateways from developer tools

Provider coverage and basic request logging are table stakes at this point. Every serious AI gateway supports the major model providers and gives you a dashboard of some kind. The dimensions below are the ones that actually determine whether a platform clears procurement.

• Deployment model. Can the gateway run inside your VPC, on-prem, or fully air-gapped, or is it hosted-only with your traffic passing through someone else's infrastructure regardless of what tier you're on?
• Compliance certifications. SOC2 Type II, ISO 27001, HIPAA, and GDPR aren't optional for regulated industries, and it matters whether these apply to the base product or only kick in on a specific paid tier and deployment configuration.
• Identity and access management. SSO through your existing IdP, SCIM provisioning, and RBAC down to the model or route level are what let IT actually manage who can do what, instead of everyone sharing a handful of API keys.
• MCP and agent governance. As agentic workflows spread across engineering orgs, the gateway needs to control which tools an agent can call, not just which models it can query.
• Model deployment alongside the gateway. Enterprises running fine-tuned or open-weight models need a serving layer, not just a proxy in front of hosted APIs from other vendors.
• Performance at scale. Latency overhead and throughput matter more as request volume grows into the millions per day across business units.

TrueFoundry: built for VPC-first, compliance-first enterprise deployment

TrueFoundry was designed around the assumption that enterprise customers need the gateway running inside their own infrastructure, not the other way around. The platform deploys as a SaaS-only gateway, a gateway-plane-only setup, or a fully self-hosted control and compute plane inside your Kubernetes cluster (EKS, GKE, AKS, or OpenShift), with the compute plane's outbound-only WebSocket connection meaning no inbound ports need to open in your firewall.

TrueFoundry's infrastructure carries SOC2, ISO 27001, GDPR, and HIPAA compliance, with data encrypted at rest and in transit and a globally distributed gateway across 12+ regions and multiple cloud providers for automated failover. On the identity side, SSO integrates with your existing authentication server, and SCIM provisioning is available for teams that want new hires synced automatically rather than manually onboarded.

• Deployment flexibility: Full VPC, on-prem, air-gapped, or hybrid deployment, with your models, datasets, and artifacts staying inside your own cloud account or on-prem infrastructure.
• MCP and agent governance: A dedicated MCP gateway with tool-level RBAC, so admins register approved MCP servers centrally and control exactly what each team's agents can reach.
• Performance: Roughly 3 to 4 ms of latency overhead, handling 350+ requests per second on a single vCPU.
• Model access: 1,000+ LLMs through one OpenAI-compatible API, so switching providers or models is a config change, not a rewrite.
• Model deployment included: Serving backends like vLLM, TGI, and Triton run in the same control plane as the gateway, so teams running their own fine-tuned models don't need a separate platform.

Best for: enterprises in regulated industries or Fortune 1000 organizations that need the gateway running inside their own VPC or on-prem environment, with model deployment and MCP governance handled in the same platform rather than stitched together from separate tools.

Portkey

Portkey has built one of the more complete hosted AI gateways on the market, and its enterprise tier genuinely addresses many of the criteria above rather than treating them as an afterthought. The core gateway gives you a single endpoint across 250+ models, with automatic fallbacks, load balancing, conditional routing, and semantic caching to cut latency and cost on repeated queries.

The Enterprise plan adds RBAC, SSO, and granular budgets on top of private cloud and VPC hosting, data export, and data isolation. Compliance certifications, including SOC2 Type II, ISO 27001, GDPR, and HIPAA, apply at this tier, alongside 24/7 support with guaranteed response times and a choice of managed SaaS, hybrid, or fully air-gapped deployment.

• Core gateway: Unified API across 250+ models with detailed logs, tracing, and cost tracking per request.
• Reliability: Automatic fallbacks, retries, and circuit breakers built into the routing layer.
• Enterprise governance: RBAC, SSO, and VPC hosting available, though these live behind the enterprise tier rather than the base product.
• Pricing: Free developer tier, a $49/month production tier, and custom enterprise pricing that typically runs $2,000 to $10,000+ a month depending on volume, retention, and deployment model.

Where the gap shows up relative to TrueFoundry is model deployment. Portkey is a gateway in front of models hosted elsewhere; it doesn't include a serving layer for teams running their own fine-tuned or open-weight models, so those teams end up running Portkey alongside a separate model-serving platform.

Best for: teams that want a mature hosted gateway with strong reliability and observability features, and are comfortable running model serving as a separate concern from the gateway itself.

LiteLLM

LiteLLM's popularity comes from being free, open source, and thoroughly documented, which makes it the default first stop for engineering teams that want a unified proxy without going through procurement. You self-host it, point your applications at one endpoint, and get logging, retries, and basic routing across providers.

The enterprise tier adds the governance layer that's missing from the open-source base: SSO and SAML integration, granular RBAC for model access, Prometheus metrics, custom callbacks, content-filtering guardrails, and audit logs. Enterprise Basic runs around $250/month; Enterprise Premium, which adds priority support and assistance with SOC2 and HIPAA certification work, runs closer to $30,000 a year.

• Core proxy: Free, self-hosted, with a large community and frequent updates.
• Enterprise governance: SSO, RBAC, audit logs, and guardrails available once you're on the licensed tier.
• Operational reality: Every tier is self-hosted, meaning your team provisions and operates the proxy cluster, Redis, Postgres, load balancers, monitoring, and incident response. Organizations typically dedicate a meaningful fraction of an engineer's time to this on an ongoing basis.
• Compliance: SOC2 and HIPAA support is something the Enterprise Premium tier assists with, rather than a certification LiteLLM itself already holds for the underlying infrastructure, since there's no infrastructure to certify; you're the one operating it.

Best for: engineering teams comfortable owning their own infrastructure operations who want a free, flexible proxy and are willing to pay for the enterprise license once governance features become necessary, without requiring the vendor to hold compliance certifications on infrastructure they don't run.

Head-to-head feature comparison

The table below evaluates all three platforms against the criteria that matter for enterprise procurement. TrueFoundry capabilities are based on its published documentation; Portkey and LiteLLM capabilities reflect their public docs and pricing pages at the time of writing.

CapabilityTrueFoundryPortkeyLiteLLMVPC / on-prem / air-gapped deploymentYes, full self-hosted control and compute planeYes, at Enterprise tierYes, always self-hostedWho operates the infrastructureTrueFoundry-managed or self-hosted, your choicePortkey-managed (hosted) or self-hosted at Enterprise tierAlways your teamSOC2 / ISO 27001 / HIPAA / GDPRYes, on core infrastructureYes, at Enterprise tierEnterprise Premium assists with certification workSSO / SCIMYes, bothSSO at Enterprise tierSSO at Enterprise tier, free for up to 5 usersMCP / agent governanceDedicated MCP gateway with tool-level RBACNot a core focus areaNot a built-in featureModel deployment includedYes, vLLM/TGI/Triton in the same control planeNo, gateway onlyNo, gateway onlyLatency overhead~3 to 4 ms, 350+ RPS on 1 vCPUNot publishedDepends on self-hosted deploymentModel access1,000+ LLMs, unified API250+ modelsBroad provider support via configEntry pricingContact for enterprise pricingFree tier, $49/month production, custom enterpriseFree self-hosted, $250 to $30,000/year enterprise

How to choose the right platform for your use case

Choose TrueFoundry if: you're in a regulated industry or a Fortune 1000 organization that needs the gateway and model serving running inside your own VPC or on-prem environment, with MCP and agent governance handled centrally rather than bolted on later.

Choose Portkey if: you want a mature hosted gateway with strong reliability and observability out of the box, and you're fine running model deployment as a separate, dedicated platform.

Choose LiteLLM if: your team is comfortable operating its own infrastructure, you want to start free, and you'll pay for the enterprise license only once you actually need SSO and audit logging.

FAQ

Q: What is the best AI gateway for enterprise teams?A: It depends on how much of the stack you want the vendor to run for you. TrueFoundry fits organizations that need VPC or on-prem deployment with model serving built in. Portkey suits teams that want a mature hosted gateway with strong reliability features. LiteLLM works for teams willing to operate their own proxy infrastructure in exchange for a free starting point.

Q: Is Portkey or LiteLLM free?A: Portkey has a free developer tier limited to 10,000 logs a month; LiteLLM's core proxy is fully open source and free to self-host, with enterprise features requiring a paid license starting around $250/month.

Q: Can I deploy TrueFoundry in my own VPC or on-prem?A: Yes. TrueFoundry runs in your VPC, on-prem, air-gapped, hybrid, or across multiple clouds, and no data leaves your domain, which is the main reason regulated enterprises choose it over hosted-only gateways.

Q: Is TrueFoundry SOC 2, HIPAA, and GDPR compliant?A: TrueFoundry's infrastructure carries SOC2, ISO 27001, GDPR, and HIPAA compliance, with RBAC, SSO, and immutable audit logging built in. Check the Trust Center at trust.truefoundry.com for current attestations.

Q: Does TrueFoundry support MCP and AI agents?A: Yes. It includes a dedicated MCP gateway with tool-level access control, so agents built on LangGraph, CrewAI, or custom frameworks can be deployed and governed centrally rather than each team wiring up its own MCP connections.

Related reading

• TrueFoundry vs Portkey vs Helicone: Enterprise AI Gateway Comparison: a related three-way comparison with a different third platform
• Understanding Portkey AI Gateway Pricing For 2026: a deeper breakdown of Portkey's pricing tiers
• LiteLLM Enterprise Pricing vs TrueFoundry: A Real Total Cost of Ownership Analysis: the total cost of ownership picture beyond the sticker price
• What is an LLM Gateway?: the architectural primer behind this post
• On-Premise AI Platform: for teams whose primary requirement is on-prem deployment

Conclusion

Portkey and LiteLLM both cover the baseline of what an AI gateway needs to do, and each is a legitimate choice depending on how much infrastructure your team wants to operate itself. The dividing line for enterprise procurement is usually deployment model and governance: whether the gateway can run inside your own VPC or on-prem environment with model serving and MCP governance handled in the same control plane. If that's the bar your organization needs to clear, book a demo to see how TrueFoundry handles enterprise-scale deployment without adding a second platform to the stack.

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