COMPARISON GUIDE

API Gateway Comparison 2026

Route, authenticate, rate-limit, and monitor your APIs from a single entry point. Honest comparison of 6 API gateways with pricing, free tiers, protocol support, and code examples.

Updated March 2026 · 12 min read

Why Use an API Gateway?

An API gateway centralizes cross-cutting concerns so you don't duplicate logic in every microservice.

🔒

Unified Authentication

One API key or OAuth token works across all your services. No need to implement auth in every backend independently.

Rate Limiting & Quotas

Protect backends from abuse with centralized rate limiting, burst control, and per-key usage quotas.

📊

Analytics & Monitoring

Track API usage, latency, error rates, and per-endpoint metrics in one dashboard instead of per-service.

🤖

AI Agent Orchestration

Give AI agents access to dozens of tools (search, screenshots, crypto, DNS) through a single authenticated endpoint.

🔀

Load Balancing

Distribute traffic across multiple backend instances. Handle failover, health checks, and canary deployments.

🛠

Request Transformation

Modify headers, rewrite URLs, transform payloads, and add CORS headers without changing backend code.

How API Gateways Work

All API gateways follow the same fundamental pattern, regardless of vendor.

1

Client Request

Client sends HTTP request to the gateway's public endpoint with an API key or token.

2

Auth & Rate Check

Gateway validates credentials, checks rate limits, and applies security policies.

3

Route & Transform

Request is routed to the correct backend service. Headers and payloads may be transformed.

4

Response & Log

Backend response is returned to client. Metrics, logs, and usage are recorded.

Side-by-Side Comparison

Feature comparison of the top API gateways in 2026.

Gateway Free Tier Open Source Self-Hosted Cloud Managed Protocols Auth Methods
Kong Freemium 30-day trial; OSS free Konnect REST, gRPC, GraphQL, WebSocket, Kafka API Key, OAuth, JWT, OIDC, mTLS
AWS API Gateway Freemium 1M calls/mo (12 months) Only REST, HTTP, WebSocket IAM, API Key, Lambda Auth, Cognito
Tyk Freemium 48-hour trial; OSS free REST, GraphQL, gRPC, TCP API Key, OAuth, JWT, OIDC
Traefik Free OSS Fully free (OSS) Hub HTTP/2, HTTP/3, gRPC, WebSocket, TCP, UDP API Key, JWT, OAuth, OIDC, LDAP
Apigee Enterprise None Only REST, GraphQL, SOAP OAuth, JWT, API Key, mTLS, SAML
Frostbyte Agent Gateway AI-Native 200 free credits, no signup REST, MCP (Model Context Protocol) API Key, USDC on-chain payment

Protocol Support Matrix

Not all gateways support the same protocols. Choose based on your architecture.

Protocol Kong AWS Tyk Traefik Apigee Frostbyte
REST / HTTP
gRPC
GraphQL
WebSocket
TCP / UDP
HTTP/3 (QUIC)
Kafka / Streaming
SOAP / XML
MCP (AI Agents) Plugin Plugin Native

Gateway Deep Dives

Detailed look at each gateway's strengths, weaknesses, and ideal use cases.

🦁 Kong Gateway

Free OSS edition with all core features. Konnect cloud from $105/mo (Plus).

The most popular open-source API gateway. 40+ plugins for auth, rate limiting, logging, transformations. Runs on Nginx/OpenResty with Lua plugins. Powers billions of API calls at companies like Nasdaq, PayPal, and Samsung.

  • 40+ free plugins
  • Multi-protocol (gRPC, GraphQL, Kafka)
  • Huge community, battle-tested
  • Run anywhere: Docker, K8s, bare metal
  • Complex to configure at scale
  • Konnect cloud costs add up fast
  • Lua plugin ecosystem has a learning curve

☁️ AWS API Gateway

1M REST or HTTP API calls/month free for 12 months. Then $1–$3.50 per million.

Fully managed, zero-ops gateway deeply integrated with Lambda, Cognito, CloudWatch, and the rest of AWS. Two types: HTTP APIs (cheaper, simpler) and REST APIs (more features, more expensive). Best if you're already on AWS.

  • Zero infrastructure management
  • Deep AWS integration (Lambda, Cognito)
  • Pay-per-request (no idle cost)
  • Automatic scaling
  • AWS lock-in
  • No gRPC or GraphQL
  • REST API type is 3.5x pricier than HTTP
  • Limited transformation capabilities

🚀 Tyk

Free open-source edition. Cloud: 48-hour trial, then usage-based pricing (contact sales).

Written in Go for high performance. Claims 10x faster than competitors. Includes developer portal, API versioning, and granular access control. Strong GraphQL and gRPC support. Open-source edition is feature-complete.

  • Fast (Go-based, claims 10x speed)
  • Built-in developer portal
  • API versioning included
  • GraphQL + gRPC support
  • Cloud pricing not transparent
  • Smaller community than Kong
  • No WebSocket support
  • Enterprise features require license

🖧 Traefik

Fully free open-source proxy. Traefik Hub (managed) has separate pricing.

Cloud-native reverse proxy and API gateway. Default ingress controller for K3s and many Kubernetes distributions. Auto-discovers services, handles Let's Encrypt automatically, supports HTTP/3. Best for Kubernetes-native architectures.

  • Completely free (no feature lockout)
  • Auto-service discovery
  • HTTP/3, TCP, UDP support
  • Kubernetes-native by default
  • Less API management features
  • No built-in developer portal
  • Hub pricing not transparent
  • Better as ingress than API gateway

🏭 Apigee (Google)

No free tier. Base environment starts at $365/month + $20 per million API calls.

Enterprise API management platform from Google Cloud. 50+ policy types, advanced analytics, API monetization, developer portals, and threat detection. Overkill for startups, but unmatched for large enterprises with complex API programs.

  • 50+ built-in policy types
  • API monetization tools
  • Advanced threat detection
  • Google Cloud integration
  • Expensive ($365/mo minimum)
  • No free tier or open-source option
  • Cloud-only (no self-hosting)
  • Complex setup and steep learning curve

❄️ Frostbyte Agent Gateway

200 free API credits. No signup required. USDC on-chain top-up available.

Purpose-built API gateway for AI agents and developers who need instant access to 40+ tools (IP geolocation, screenshots, crypto prices, DNS, web scraping, code execution, and more). Single API key, unified billing, zero config. MCP (Model Context Protocol) native.

  • 40+ built-in API tools included
  • No signup required to start
  • MCP native for AI agents
  • USDC crypto payments accepted
  • Not open source
  • REST and MCP only
  • Smaller scale than enterprise gateways
  • No self-hosting option

Self-Hosted vs. Managed Cloud

The biggest architectural decision when choosing an API gateway.

Factor Self-Hosted (Kong, Tyk, Traefik) Managed Cloud (AWS, Apigee, Frostbyte)
Cost at low volumeServer costs only ($5-50/mo VPS)Free tier or pay-per-request
Cost at high volumeFixed server costs, scales linearlyPer-request pricing, can get expensive
Setup timeHours to days (Docker, K8s, config)Minutes (API key, start calling)
MaintenanceYou handle updates, scaling, monitoringProvider handles everything
CustomizationFull control, custom plugins, any languageLimited to provider's feature set
Data sovereigntyYour servers, your dataProvider stores logs and metadata
Vendor lock-inMinimal (standard HTTP proxying)High (proprietary APIs, config formats)
Best forTeams with DevOps capacity, custom needsSmall teams, rapid prototyping, AI agents

Pricing at Scale

What each gateway costs at different traffic levels (managed/cloud tiers).

Kong Konnect Plus

$105/mo

1M calls included. $200 per additional 1M. Max 10M/mo.

AWS HTTP API

$1/M calls

1M free (12 months). $0.90/M above 300M/mo. Pay-per-use.

AWS REST API

$3.50/M calls

1M free (12 months). More features than HTTP API. Tiered pricing.

Tyk Cloud

Contact Sales

Usage-based pricing. Professional tier has unlimited requests.

Apigee Base

$365/mo

Plus $20/M API calls. 50 QPS limit. 20 API proxies max.

Frostbyte

Free / USDC

200 free credits. Top up with USDC on-chain. No minimum spend.

Code Examples

Making API calls through each gateway.

Proxying a request through the gateway

# Kong: Add a service and route, then call through the gateway
# Admin API (localhost:8001)
curl -X POST http://localhost:8001/services \
  --data "name=my-api" \
  --data "url=http://backend:3000"

curl -X POST http://localhost:8001/services/my-api/routes \
  --data "paths[]=/api/v1"

# Client calls go through the gateway (port 8000)
curl http://localhost:8000/api/v1/users \
  -H "apikey: your-kong-key"
# AWS API Gateway: Call your deployed REST API
# After creating API + resource + method + deployment in console
curl https://{api-id}.execute-api.us-east-1.amazonaws.com/prod/users \
  -H "x-api-key: your-aws-api-key"

# With IAM auth (using AWS CLI credentials)
aws apigateway test-invoke-method \
  --rest-api-id {api-id} \
  --resource-id {resource-id} \
  --http-method GET
# Frostbyte Agent Gateway: Call any of 40+ tools instantly
# No setup, no config — just call the endpoint

# Get your IP geolocation
curl https://frostbyte-landing.vercel.app/api/ip/json

# Take a screenshot (with API key)
curl https://frostbyte-landing.vercel.app/api/v1/agent-screenshot/screenshot \
  -H "X-API-Key: your-key" \
  -d '{"url":"https://example.com","format":"png"}'

# Get crypto prices (no key needed for basic endpoints)
curl https://frostbyte-landing.vercel.app/api/v1/defi-trading/prices

Adding rate limiting

# Kong: Add rate-limiting plugin to a service
curl -X POST http://localhost:8001/services/my-api/plugins \
  --data "name=rate-limiting" \
  --data "config.minute=100" \
  --data "config.hour=5000" \
  --data "config.policy=local"

# Response headers show remaining quota:
# X-RateLimit-Remaining-Minute: 99
# X-RateLimit-Limit-Minute: 100
# Traefik: Rate limiting in docker-compose labels
services:
  my-api:
    labels:
      - "traefik.http.middlewares.ratelimit.ratelimit.average=100"
      - "traefik.http.middlewares.ratelimit.ratelimit.burst=50"
      - "traefik.http.middlewares.ratelimit.ratelimit.period=1m"
      - "traefik.http.routers.my-api.middlewares=ratelimit"

# Or in traefik.yml:
http:
  middlewares:
    ratelimit:
      rateLimit:
        average: 100
        burst: 50
# Tyk: Rate limiting in API definition JSON
{
  "name": "My API",
  "api_id": "my-api",
  "global_rate_limit": {
    "rate": 100,
    "per": 60
  },
  "use_standard_auth": true,
  "auth": {
    "auth_header_name": "Authorization"
  }
}

# Per-key rate limits set via Tyk Dashboard or API

Using the gateway with JavaScript

// AWS API Gateway: Call with fetch
const response = await fetch(
  `https://${apiId}.execute-api.${region}.amazonaws.com/prod/users`,
  {
    headers: {
      'x-api-key': process.env.AWS_API_KEY,
      'Content-Type': 'application/json'
    }
  }
);
const data = await response.json();
console.log(data);
// Kong: Manage routes via Admin API
const response = await fetch('http://localhost:8001/services', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    name: 'user-service',
    url: 'http://backend:3000',
    retries: 3,
    connect_timeout: 5000
  })
});

// Add rate limiting plugin
await fetch('http://localhost:8001/services/user-service/plugins', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    name: 'rate-limiting',
    config: { minute: 100 }
  })
});
// Frostbyte: Call 40+ tools with one API key
const BASE = 'https://frostbyte-landing.vercel.app/api';
const KEY = 'your-api-key';
const headers = { 'X-API-Key': KEY };

// IP Geolocation
const geo = await fetch(`${BASE}/v1/agent-geo/geo/8.8.8.8`, { headers });

// Screenshot
const shot = await fetch(`${BASE}/v1/agent-screenshot/screenshot`, {
  method: 'POST',
  headers: { ...headers, 'Content-Type': 'application/json' },
  body: JSON.stringify({ url: 'https://example.com' })
});

// DNS Lookup
const dns = await fetch(`${BASE}/resolve/example.com`, { headers });

Live Demo: Try the Frostbyte Agent Gateway

Call the gateway right from your browser. No API key needed for basic endpoints.

IP Geolocation Lookup

Click "Look Up IP" to see the gateway in action.

Which API Gateway Should You Choose?

Match your requirements to the right gateway.

🤖 Building AI agents?

You need pre-built tools (search, screenshots, crypto, DNS) behind a single API key. No infrastructure to manage.

Use Frostbyte Agent Gateway

☁️ All-in on AWS?

You want Lambda integration, Cognito auth, and pay-per-request pricing. Zero ops, tight AWS ecosystem fit.

Use AWS API Gateway (HTTP API)

🛠 Need maximum flexibility?

You want open source, 40+ plugins, multi-protocol support (gRPC, GraphQL, Kafka), and self-hosting freedom.

Use Kong Gateway

☸️ Running Kubernetes?

You need a lightweight, cloud-native ingress controller with auto-discovery, HTTP/3, and Let's Encrypt automation.

Use Traefik

🏭 Enterprise-scale API program?

You need API monetization, 50+ security policies, compliance, and an enterprise developer portal on Google Cloud.

Use Apigee

🚀 High-performance microservices?

You want a Go-based gateway with built-in developer portal, API versioning, and strong GraphQL/gRPC support.

Use Tyk

Frequently Asked Questions

What is an API gateway?
An API gateway sits between clients and your backend services, handling authentication, rate limiting, routing, load balancing, and request transformation. Instead of exposing individual microservices directly, clients send all requests to a single entry point. The gateway validates API keys, enforces quotas, applies security policies, and forwards requests to the correct backend.
Do I need an API gateway?
If you have more than 2-3 services, yes. An API gateway centralizes authentication (one API key for all services), rate limiting (one policy instead of per-service), monitoring (one dashboard), and SSL termination. Without one, you duplicate auth logic in every service, manage multiple endpoints, and have no unified view of API usage.
What is the cheapest API gateway?
For self-hosted: Traefik, Kong, and Tyk all have free open-source editions. For managed cloud: AWS HTTP API Gateway costs $1 per million requests with a 1M request/month free tier. Frostbyte Agent Gateway offers 200 free API credits with no signup required. Apigee and Cloudflare API Gateway are the most expensive, starting at $365/month and $3,000+/month respectively.
Kong vs AWS API Gateway: which is better?
Kong is better if you need multi-cloud, open-source flexibility, or advanced protocols (gRPC, GraphQL, WebSocket). AWS API Gateway is better if you are already on AWS and want tight Lambda/Cognito integration with zero infrastructure management. Kong supports 40+ plugins and can run anywhere. AWS API Gateway is simpler but locks you into the AWS ecosystem.
Can I use an API gateway for AI agents?
Yes. API gateways are increasingly used as tool orchestration layers for AI agents. Frostbyte Agent Gateway is purpose-built for this, providing 40+ tools (IP geo, screenshots, crypto, DNS, etc.) behind a single API key. Kong and Traefik also support AI Gateway features for LLM routing and prompt management. Any gateway with REST routing can front AI tool APIs.
What protocols should an API gateway support?
At minimum: HTTP/HTTPS and REST. For modern architectures, you may also need gRPC (inter-service communication), GraphQL (flexible client queries), WebSocket (real-time), and TCP/UDP (low-level protocols). Kong and Traefik support all of these. AWS API Gateway supports REST, HTTP, and WebSocket. Apigee supports REST, GraphQL, and SOAP.
Is an open-source API gateway secure enough for production?
Yes. Kong, Traefik, and Tyk are used in production by thousands of organizations. Open-source gateways support API key auth, OAuth 2.0, JWT validation, mTLS, rate limiting, IP whitelisting, and CORS. The code is auditable, and security patches are typically released faster than proprietary alternatives. The main trade-off is that you manage the infrastructure yourself.

Try Frostbyte Agent Gateway — Free

200 free API credits. 40+ tools. No signup. Single API key for IP geolocation, screenshots, crypto, DNS, web scraping, and more.

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