Comparison

Emissary vs Kong Gateway

No clear leader: Kong Gateway (53.8) and Emissary (51.3) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Emissary51
Kong Gateway54
Score
vioscaleAI score
Emissary51 / 100medium · 54%
Kong Gateway54 / 100medium · 74%
Pricing
Free tier
Emissary✓
Kong Gateway✓
Model
Emissaryopen_source
Kong Gatewayopen_source
Price level
Emissaryfree
Kong Gatewayfree
Transparent
Emissary✓
Kong Gateway✗
Integrations
Count
Emissary7
Kong Gateway12
Reliability
Sla pct
Emissary–
Kong Gateway99.99
Status page
Emissary–
Kong Gateway✓
Adoption
Dependent repos
Emissary4
Kong Gateway1
Github stars
Emissary4,521
Kong Gateway44,260
Activity
Commits last 30d
Emissary56
Kong Gateway10
Release
Cadence days
Emissary18
Kong Gateway42
History
Emissary20 items
Kong Gateway20 items
License
Spdx
EmissaryApache-2.0
Kong GatewayApache-2.0
Language
Primary
EmissaryPython
Kong GatewayLua
Market
Content
Faq
Emissary5 items
Kong Gateway8 items

Capabilities

Feature-by-feature on the axes that matter for api gateways. “-” means undocumented, not absent.

Deployment
Hosting
EmissarySelf-hosted only
Kong GatewayCloud + self-hosted
Kubernetes-native
Emissary✓
Kong Gateway✓
Traffic
Rate limiting
Emissary✓
Kong Gateway✓
Request/response transformation
Emissary-
Kong Gateway✓
Security
OAuth2 / OIDC / JWT
Emissary-
Kong Gateway✓
Mutual TLS
Emissary✓
Kong Gateway✓
Protocols
GraphQL gateway
Emissary-
Kong Gateway-
gRPC support
Emissary✓
Kong Gateway-
Delivery
Developer portal
Emissary-
Kong Gateway✓
Monetization
Emissary-
Kong Gateway✓
Ecosystem
Plugin ecosystem
Emissary-
Kong GatewayExtensive
Insight
Observability
Emissary✓
Kong Gateway✓

What each one is

The product in its own terms, so the numbers below have context.

Emissary

A gateway built on Envoy Proxy that provides Layer 7 load balancing, ingress traffic management with support for multiple protocols including gRPC and HTTP/2, and Kubernetes-native configuration through declarative routing policies.

Independently observed

Kong Gateway

Kong Gateway is a scalable API and LLM gateway platform designed for cloud-native deployments. It provides traffic management, authentication, rate limiting, request transformation, and advanced AI capabilities.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Emissary

Open source
as of verify ↗

Kong Gateway

Open source

Open source core; Kong Konnect cloud platform offers free trial and commercial subscriptions

as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Emissary–
Kong Gateway✓
Linux
Emissary–
Kong Gateway✓
CLI
Emissary–
Kong Gateway✓
Deployment
Cloud / SaaS
Emissary✓
Kong Gateway✓
Self-hosted
Emissary✓
Kong Gateway✓
Hybrid
Emissary✗
Kong Gateway✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

In common (1)
  • Prometheus

Emissary

7 total - 6 not shared
  • Consul
  • Linkerd
  • Istio
  • Knative
  • Grafana
  • Datadog
Independently observed

Kong Gateway

19 total - 18 not shared
  • AWS Bedrock
  • Azure Content Safety
  • Google Cloud Model Armor
  • OpenAI
  • Anthropic
  • Llama 3
  • Kubernetes
  • Helm
  • Git
  • Stripe
  • Twilio
  • Llama
  • DocuSign
  • Insomnia
  • Apache Kafka
  • Redis
  • cert-manager
  • AWS Lambda
Independently observed
Still deciding?

Emissary or Kong Gateway: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.