Best AI Gateway Solutions

Top AI Gateway Solutions for GenAI Builders

Explore leading AI gateway solutions for GenAI. Compare platforms, understand key capabilities, and see how Portkey provides a unified gateway, observability, governance, guardrails, and MCP support for production AI.

What is an AI Gateway?

An AI gateway is a centralized orchestration platform that helps teams manage, secure, and scale large language models (LLMs) in production environments. It removes the complexity of working directly with individual providers, offering a unified interface to connect applications with one or more LLMs.

Core functions of an AI gateway

Request orchestration

Analyzes incoming queries, normalizes inputs, and routes them to the most suitable model based on latency, cost, and use-case parameters.

Centralized management

Provides a single platform to handle API keys, authentication, model updates, and environment configurations.

Performance optimization

Uses caching, batching, and parallel processing to improve latency and reduce compute and token costs.

Security and compliance

Enforces strong data-protection controls, PII masking, and content moderation to meet organizational and regulatory requirements.

Monitoring and observability

Tracks usage, latency, token counts, and costs while logging every request for debugging and auditability.

Why GenAI Builders Need a Gateway Layer

Moving GenAI from prototypes to production quickly exposes gaps that traditional infrastructure can’t fill.

Teams suddenly juggle multiple providers, scattered keys, and growing compliance risks — all while trying to keep latency, cost, and quality under control.

The production challenges

Fragmented model ecosystem:

Different APIs, credentials, and usage patterns across providers make scaling brittle.

Limited visibility

Without centralized logs and metrics, teams can’t trace errors, measure latency, or monitor token spend.

Key sprawl and security risk

Keys are shared across users or environments, creating compliance and access issues.

Inconsistent reliability

Provider downtimes, quota limits, and slow responses disrupt workflows and customer experience.

Governance blind spots:

No unified way to enforce content policies, moderate outputs, or track who’s calling which model.

Top AI Gateway Solutions in 2026

Platform Focus Area Key Features Ideal For
Portkey End-to-end production control plane. Open source. Unified API for 1,600+ LLMs, observability, guardrails, governance, prompt management, MCP integration GenAI builders and enterprises scaling to production
OpenRouter Developer-first multi-model routing Unified API for multiple LLMs, simple routing, community model access Individual developers and small teams experimenting with multiple models
LiteLLM Open-source LLM proxy OpenAI-compatible proxy supporting 1600+ LLMs, OSS extensibility Platform teams running multi-provider LLM routing with self-managed infrastructure
Vercel AI Gateway Frontend integration & caching Route AI requests from frontend apps, built-in caching, model proxy via Edge Functions Web developers integrating AI features in client apps
TrueFoundry Gateway MLOps workflow management Model deployment, serving, and monitoring; integrates with internal ML pipelines ML and platform engineering teams
Kong AI Gateway API gateway with AI routing extensions API lifecycle management, rate limiting, policy enforcement via plugins Enterprises already using Kong for APIs
Solo.io Gloo Gateway Cloud-native API gateway Envoy-based routing, service mesh integrations, AI traffic policies Cloud-native teams and service mesh users
F5 AI Gateway Enterprise-grade traffic control Load balancing, security filtering, integration with F5 BIG-IP Large enterprises with existing F5 infrastructure
IBM AI Gateway AI governance and enterprise compliance Integrates with watsonx, supports enterprise IAM and auditing Regulated industries (finance, healthcare)
Azure AI Gateway Managed Microsoft ecosystem solution Routing, telemetry, Azure OpenAI and model catalog integration Enterprises fully on Azure stack
Cequence AI gateway API security platform API defense, traffic inspection, and threat prevention Security teams and enterprises that need strong API protection and threat prevention.
Custom Gateway Solutions In-house or OSS-built layers Fully customizable; requires ongoing maintenance and scaling effort Advanced engineering teams needing full control

In-Depth Analysis of the Top 10 AI Gateway Solutions

Dive deeper into each solution, covering their core strengths, weaknesses, pricing, customer base, and market reputation, to help teams choose the right gateway for their GenAI production stack.

Portkey

Portkey is an AI Gateway and production control plane built specifically for GenAI workloads. It provides a single interface to connect, observe, and govern requests across 1,600+ LLMs. Portkey extends the gateway with observability, guardrails, governance, and prompt management, enabling teams to deploy AI safely and at scale.

Strengths

Primarily designed for production teams, so lightweight prototypes may find it more advanced than needed.

Deep observability

Detailed logs, latency metrics, token and cost analytics by app, team, or model.

Guardrails and moderation

Request and response filters, jailbreak detection, PII redaction, and policy-based enforcement.

Governance and access control

Workspaces, roles, data residency, audit trails, and SSO/SCIM integration.

Prompt management and versioning

Reusable templates, variable substitution, and environment promotion.

Multi-model routing and reliability controls

Latency- or cost-based routing, fallbacks, canary deployments, and circuit breakers.

MCP integration

Register tools and servers with built-in observability and governance for agent use cases.

Developer experience

Modern SDKs (Python, JS, TS), streaming support, evaluation hooks, and test harnesses.

Limitations
Pricing Structure

Portkey offers a usage-based pricing model with a free tier for initial development and testing. Enterprise plans include advanced governance, audit logging, and dedicated regional deployments.

Ideal For / Typical Users

GenAI builders, enterprise AI teams, and platform engineers running multi-provider LLM workloads who need observability, compliance, and reliability in production.

OpenRouter

OpenRouter is a developer-focused AI gateway that provides a single API for accessing and routing requests across multiple LLM providers. It abstracts provider-specific APIs and billing behind a unified endpoint, making it easy to experiment with different models without managing separate accounts or credentials.

Strengths

A single API and pricing layer that makes it easy to manage multiple providers, enables fast model switching and easy comparison during experimentation.

No infrastructure to manage; developers can start routing requests immediately.

Designed to handle very large request volumes.

Requests can be transparently routed around provider outages or errors to maintain availability.

Limitations
Pricing Structure

Usage-based pricing with plan-dependent access to models, providers, and routing.

Ideal For / Typical Users

Individual developers and small teams looking for easy multi-model access and routing without managing provider accounts or infrastructure.

LiteLLM

LiteLLM is an open-source, self-hosted AI gateway that provides an OpenAI-compatible interface for routing requests across multiple LLM providers. It is commonly deployed as an internal gateway layer that teams run and operate themselves.

Strengths

A single API and pricing layer that enables fast model switching and easy provider comparison during experimentation.

Full control over deployment, networking, and data flow.

Can be integrated with custom logging, auth, or policy layers.

Widely used as a lightweight internal gateway.

Limitations
Pricing Structure

Free, open-source self-hosting with paid enterprise plans for hosted and advanced capabilities.

Ideal For / Typical Users

Teams routing across multiple LLM providers while managing the rest of the infrastructure in-house, especially platform teams comfortable operating self-hosted gateways.

Vercel AI Gateway

Vercel AI Gateway is an extension of Vercel’s developer platform designed to help frontend and edge applications call LLMs efficiently. It abstracts model access behind a single endpoint integrated with Vercel’s Edge Functions, letting developers stream responses directly to users with minimal setup. The focus is on latency, caching, and ease of use rather than deep governance or observability.

Strengths

Tightly coupled with Vercel Edge Functions and the ai SDK for instant model calls from web apps.

Zero-config setup within existing Vercel deployments.

Optimized for fast token delivery to improve UX in chat or completion UIs.

Basic request-level metrics surfaced through Vercel’s dashboard.

Limitations
Pricing Structure

Included within Vercel’s platform plans. The gateway has a free tier with request limits and usage-based pricing beyond that, tied to overall Vercel bandwidth and function execution.

Ideal For / Typical Users

Frontend developers and product teams deploying AI-powered web applications that need fast, cached inference with minimal infrastructure overhead.

TrueFoundry AI Gateway

TrueFoundry is an MLOps platform that helps teams deploy, monitor, and manage machine learning models and LLM-based applications. Its AI Gateway component is part of a broader MLOps suite, focused on infrastructure automation, model deployment, and workflow management rather than pure multi-provider orchestration. The gateway is positioned for teams that already have ML pipelines and need a controlled way to serve LLMs within those workflows.

Strengths

Tightly connected with model deployment, experiment tracking, and model registry features.

Autoscaling, rollout strategies, and Kubernetes-native deployments for teams that prefer infrastructure ownership.

Supports deploying fine-tuned or proprietary LLMs alongside hosted providers.

Metrics for model performance, resource usage, and API health within the same interface.

Limitations
Pricing Structure

No broad public free tier; pricing is generally provided on request.

Ideal For / Typical Users

ML platform teams, data science groups, and enterprises building custom model pipelines who want model hosting and serving integrated with their DevOps/MLOps workflows.

Kong AI Gateway

Kong is a widely adopted API gateway and service connectivity platform used by engineering teams to manage API traffic at scale. Its AI Gateway capabilities are delivered through plugins and extensions built on top of Kong Gateway and Kong Mesh.

Strengths

Industry-standard rate limiting, authentication, transformations, and traffic policies.

AI-related plugins support routing to LLM providers, applying policies, and transforming requests.

Integrates with WAFs, OAuth providers, RBAC, and audit frameworks.

Deployable as OSS, enterprise self-hosted, or cloud-managed via Kong Konnect.

Limitations
Pricing Structure

AI gateway is a part of their API gateway offering.

Ideal For / Typical Users

Enterprises already using Kong as their API gateway or service mesh who want to extend existing infrastructure to support basic LLM routing, without adding a new platform.

Solo.io Gloo Gateway

Gloo Gateway is a cloud-native API gateway built on Envoy to secure, observe, and control AI applications. While not AI-native, Solo has introduced AI traffic policies and LLM-aware routing extensions built on top of Gloo’s existing API and mesh infrastructure.

Strengths

Deep integration with Istio, Envoy, and Kubernetes, making it a natural fit for cloud-native platforms.

Supports transformations, throttling, authentication, and custom routing logic applicable to LLM endpoints.

Optimized for large microservices architectures with low-latency routing.

mTLS, OPA/OPA-Gatekeeper policies, JWT validation, and audit controls.

Limitations
Pricing Structure

Pricing is typically custom-quoted for mid-size and enterprise customers.

Ideal For / Typical Users

Platform engineering teams and enterprises running Kubernetes, Istio, or Envoy-based service meshes that want to add light AI routing on top of existing traffic infrastructure.

F5 AI Gateway

F5’s AI Gateway builds on F5’s long-standing expertise in application delivery, traffic management, and enterprise security. Its value lies in bringing AI request flows under the same operational umbrella as existing enterprise apps and APIs.

Strengths

Load balancing, health checks, and availability controls across AI endpoints.

Integrates with F5 WAF, bot protection, TLS termination, and API security layers.

Built for large-scale, low-latency environments with demanding throughput needs.

Suitable for enterprises with datacenter or private cloud requirements.

AI calls can reuse existing security, authentication, and rate-limiting policies across apps.

Limitations
Pricing Structure

AI-related extensions typically require premium modules or add-ons. Pricing is not public and is usually enterprise-negotiated.

Ideal For / Typical Users

Large enterprises with existing F5 or NGINX infrastructure that want to bring AI traffic into the same security, routing, and availability framework without introducing a new platform.

IBM AI Gateway

IBM’s AI Gateway sits within the broader watsonx ecosystem, designed to give enterprises a governed, auditable, and policy-driven interface for accessing foundation models.

Strengths

Integrates with watsonx.governance for explainability, lineage, approvals, and risk tracking.

Works with LDAP, Active Directory, IAM roles, SSO, and audit systems.

Built for industries requiring strict oversight (finance, healthcare, public sector).

Role-based permissions, workspace separation, project-level isolation, and audit trails.

Supports IBM’s own foundation models, open-source models, and integrations with selected third-party providers.

Limitations
Pricing Structure

Typically sold via annual enterprise contracts, with pricing varying based on model usage, governance requirements, and deployment size.

Ideal For / Typical Users

Enterprises prioritizing compliance, auditability, and controlled AI deployment, especially those already using IBM’s governance tools or operating in regulated industries.

Azure AI Gateway

Azure AI Gateway is part of Microsoft’s Azure AI platform, providing a unified access layer to Azure OpenAI models, the Azure Model Catalog, and enterprise-managed deployments.

Strengths

Works seamlessly with Azure OpenAI, Azure AI Foundry, Azure AD, Key Vault, and Azure Monitor.

Unified routing to foundation models hosted within Azure’s model catalog.

Native support for Azure AD, managed identities, RBAC, network isolation, and keyless authentication.

Integrates with Azure Monitor and Application Insights for request metrics, latency traces, and logging.

Compliance, audit logs, and workspace-level access management built into the ecosystem.

Limitations
Pricing Structure

The gateway itself does not have a standalone billing model; costs derive from Azure service consumption.

Ideal For / Typical Users

Teams fully invested in the Microsoft Azure ecosystem that want a governed interface to Azure OpenAI and the Azure model catalog, with enterprise-grade identity and compliance controls.

Cequence AI Gateway

Cequence is best known for its API security platform, offering protection against bots, fraud, and malicious API traffic. The Cequence AI Gateway extends this security layer to AI and LLM endpoints, focusing on API defense, traffic inspection, and threat prevention rather than orchestration or model-level intelligence.

Strengths

Uses behavioral analytics, anomaly detection, and bot defense to protect AI endpoints from abuse.

Rate limiting, schema validation, traffic filtering, and risk scoring applied directly to AI calls.

Integrates WAF capabilities, bot management, API discovery, and runtime protection.

Supports on-prem, cloud, and hybrid models; integrates with existing API gateways.

Detailed logs of suspicious patterns, overuse, or attacks targeting LLM APIs.

Limitations
Pricing Structure

Pricing is usually provided through a custom annual contract.

Ideal For / Typical Users

Security teams and enterprises that need strong API protection and threat prevention for AI endpoints, especially those already using Cequence for broader API security operations.

Custom Gateway Solutions

Some engineering teams choose to build their own AI gateway or proxy layer using open-source components, internal microservices, or cloud primitives. These “custom gateways” often start as simple proxies for OpenAI or Anthropic calls and gradually evolve into internal platforms handling routing, logging, and key management. While they offer full control, they require significant ongoing engineering, security, and maintenance investment to keep up with the rapidly expanding LLM ecosystem.

Strengths

Every component can be tailored to internal needs.

Easy to enforce organization-specific data policies or network isolation.

Fits seamlessly into proprietary systems, legacy infrastructure, or internal developer platforms.

If only supporting a single provider or simple routing logic.

Limitations
Pricing Structure

No fixed pricing — the cost is measured in engineering hours, cloud resources, and operational overhead. Over time, most teams report that maintaining custom gateways costs more than adopting a purpose-built platform, especially once governance, observability, and multi-provider support become requirements.

Ideal For / Typical Users

Highly specialized engineering teams with unique compliance or architectural constraints that cannot be met by commercial platforms, and who have the bandwidth to maintain internal infrastructure.

Key Capabilities of AI Gateways

Unified Endpoint

Connect to any LLM via a single API.

Multi-Model Routing

Dynamically route requests to OpenAI, Anthropic, Mistral, etc.

Caching & Rate Limiting

Optimize latency and cost.

Key Management

Securely store and rotate provider keys.

Observability:

Track token usage, latency, and performance.

Governance & Guardrails:

Enforce content policies and access control.

Why Portkey is different

Governance at scale

Built for enterprise control from day one

HIPAA

COMPLIANT

GDPR

MCP-native capabilities

Portkey is the first AI gateway designed for MCP at scale. It provides:

Comprehensive visibility into every request
Unified SDKs and APIs

A single interface for 1,600+ LLMs and embeddings across OpenAI, Anthropic, Mistral, Gemini, Cohere, Bedrock, Azure, and local deployments.

Guardrails and safety
Prompt and context management

Template versioning, variable substitution, environment promotion, and approval flows to maintain clean, reproducible prompt pipelines. Portkey unifies everything teams need to build, scale, and govern GenAI systems — with the reliability and control that production demands.

Reliability automation

Sophisticated failover and routing built into the gateway:

Architecture overview

Portkey sits at the center of the GenAI stack as the control plane that every model call and tool interaction passes through. When an application, agent, or backend service sends a request, it first reaches Portkey’s gateway layer. This is where authentication, access rules, key management, routing logic, caching, rate limits, guardrails, and reliability controls are applied. Instead of each application implementing its own logic, Portkey standardizes this behavior across the entire organization.

From the gateway, the request is routed to the appropriate model provider or internal model. Portkey supports the full ecosystem — OpenAI, Anthropic, Mistral, Google Gemini, Cohere, Hugging Face, Bedrock, Azure OpenAI, Ollama, and custom enterprise-hosted LLMs. Provider differences, credentials, model versions, and health checks are all abstracted behind a single consistent interface.

Portkey also routes MCP tool calls. MCP servers are registered and discovered through Portkey, allowing agents to call external tools with the same governance, access controls, and observability as model requests.

Tool executions, context loads, errors, and policies are all enforced within the same control plane. Every interaction—whether a model call or a tool invocation—is captured by Portkey’s observability layer. Logs, transformed traces, latency breakdowns, token and cost analytics, error patterns, and replay data flow into a unified telemetry stream. This gives teams a real-time understanding of system behavior, performance, and spend without instrumenting anything manually.

All of this rolls up into Portkey’s governance layer, where organizations manage workspaces, roles, budgets, rate limits, data residency, audit trails, and policy-as-code. This is where compliance and operational controls are defined and consistently enforced across teams and applications.

Together, these layers form a single architecture: applications send requests, Portkey governs and routes them, providers execute them, and all telemetry flows back into a governed control plane. It replaces the fragmented mix of proxies, scripts, dashboards, and ad-hoc control mechanisms with one unified platform built for production-grade GenAI.

Use Cases

Portkey is designed to support a wide range of GenAI applications, from early prototypes evolving into production systems to large-scale enterprise deployments. Teams building AI copilots, agents, and workflows use Portkey as the backbone that keeps every model call and tool invocation reliable, governed, and traceable as projects grow from prototype to production.

As applications span multiple models, providers, and tools, Portkey ensures consistent behavior across all workflows without requiring developers to rewrite internal logic or maintain provider-specific complexity.

Enterprise AI teams use Portkey to centralize access to models and tools, replacing scattered provider keys, credentials, and policies with a single control plane that enforces budgets, quotas, permissions, and compliance rules.

Organizations with many teams and departments rely on Portkey to standardize AI access, making onboarding easier and ensuring that usage, safety, and governance requirements are applied uniformly.

Product and platform engineering teams use Portkey to move from experimentation to stable production, with clear visibility into latency, costs, token usage, and model behavior—without building internal dashboards or handling vendor fragmentation.

Companies using both hosted and internally deployed models use Portkey to unify provider and self-hosted LLM access behind the same gateway, making routing, governance, and observability consistent across all inference sources.

Integrations

Portkey connects to the full GenAI ecosystem through a unified control plane. Every integration works through the same consistent gateway. This gives teams one place to manage routing, governance, cost controls, and observability across their entire AI stack.

Get started

Portkey gives teams a single control plane to build, scale, and govern GenAI applications in production with multi-provider support, built-in safety and governance, and end-to-end visibility from day one. Start Building with Portkey

Frequently Asked Questions

What is an AI gateway?
How is an AI gateway different from a traditional API gateway?
Do I need a gateway if I only use one provider?
How long does it take to integrate Portkey?
Is Portkey SOC-compliant and enterprise-ready?

Portkey is a comprehensive platform designed to streamline and enhance AI integration for developers and organizations.