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
An API gateway centralizes cross-cutting concerns so you don't duplicate logic in every microservice.
One API key or OAuth token works across all your services. No need to implement auth in every backend independently.
Protect backends from abuse with centralized rate limiting, burst control, and per-key usage quotas.
Track API usage, latency, error rates, and per-endpoint metrics in one dashboard instead of per-service.
Give AI agents access to dozens of tools (search, screenshots, crypto, DNS) through a single authenticated endpoint.
Distribute traffic across multiple backend instances. Handle failover, health checks, and canary deployments.
Modify headers, rewrite URLs, transform payloads, and add CORS headers without changing backend code.
All API gateways follow the same fundamental pattern, regardless of vendor.
Client sends HTTP request to the gateway's public endpoint with an API key or token.
Gateway validates credentials, checks rate limits, and applies security policies.
Request is routed to the correct backend service. Headers and payloads may be transformed.
Backend response is returned to client. Metrics, logs, and usage are recorded.
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 |
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 |
Detailed look at each gateway's strengths, weaknesses, and ideal use cases.
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.
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.
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.
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.
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.
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.
The biggest architectural decision when choosing an API gateway.
| Factor | Self-Hosted (Kong, Tyk, Traefik) | Managed Cloud (AWS, Apigee, Frostbyte) |
|---|---|---|
| Cost at low volume | Server costs only ($5-50/mo VPS) | Free tier or pay-per-request |
| Cost at high volume | Fixed server costs, scales linearly | Per-request pricing, can get expensive |
| Setup time | Hours to days (Docker, K8s, config) | Minutes (API key, start calling) |
| Maintenance | You handle updates, scaling, monitoring | Provider handles everything |
| Customization | Full control, custom plugins, any language | Limited to provider's feature set |
| Data sovereignty | Your servers, your data | Provider stores logs and metadata |
| Vendor lock-in | Minimal (standard HTTP proxying) | High (proprietary APIs, config formats) |
| Best for | Teams with DevOps capacity, custom needs | Small teams, rapid prototyping, AI agents |
What each gateway costs at different traffic levels (managed/cloud tiers).
1M calls included. $200 per additional 1M. Max 10M/mo.
1M free (12 months). $0.90/M above 300M/mo. Pay-per-use.
1M free (12 months). More features than HTTP API. Tiered pricing.
Usage-based pricing. Professional tier has unlimited requests.
Plus $20/M API calls. 50 QPS limit. 20 API proxies max.
200 free credits. Top up with USDC on-chain. No minimum spend.
Making API calls through each 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
# 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
// 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 });
Call the gateway right from your browser. No API key needed for basic endpoints.
Click "Look Up IP" to see the gateway in action.
Match your requirements to the right gateway.
You need pre-built tools (search, screenshots, crypto, DNS) behind a single API key. No infrastructure to manage.
Use Frostbyte Agent Gateway
You want Lambda integration, Cognito auth, and pay-per-request pricing. Zero ops, tight AWS ecosystem fit.
Use AWS API Gateway (HTTP API)
You want open source, 40+ plugins, multi-protocol support (gRPC, GraphQL, Kafka), and self-hosting freedom.
Use Kong Gateway
You need a lightweight, cloud-native ingress controller with auto-discovery, HTTP/3, and Let's Encrypt automation.
Use Traefik
You need API monetization, 50+ security policies, compliance, and an enterprise developer portal on Google Cloud.
Use Apigee
You want a Go-based gateway with built-in developer portal, API versioning, and strong GraphQL/gRPC support.
Use Tyk
200 free API credits. 40+ tools. No signup. Single API key for IP geolocation, screenshots, crypto, DNS, web scraping, and more.
Get Your Free API Key →