vioscaleAI
Comparison

Envoy AI Gateway vs Keywords AI

No clear leader: Keywords AI (62.4) and Envoy AI Gateway (59.3) 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.

Envoy AI Gateway full profile →Keywords AI full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Envoy AI Gateway59
Keywords AI62
Score
vioscaleAI score
Envoy AI Gateway59 / 100medium · 54%
Keywords AI62 / 100medium · 68%
Pricing
Free tier
Envoy AI Gateway✓
Keywords AI✓
Model
Envoy AI Gatewayopen_source
Keywords AIfreemium
Price level
Envoy AI Gatewayfree
Keywords AIhigh
Starting price
Envoy AI Gateway–
Keywords AI$199
Transparent
Envoy AI Gateway–
Keywords AI✓
Integrations
Count
Envoy AI Gateway16
Keywords AI2
Security
Gdpr
Envoy AI Gateway–
Keywords AI✓
Hipaa
Envoy AI Gateway–
Keywords AI✓
Iso27001
Envoy AI Gateway–
Keywords AI✓
Soc2
Envoy AI Gateway–
Keywords AI✓
Trust center
Vulnerabilities
Reliability
Sla pct
Envoy AI Gateway–
Keywords AI99.9
Adoption
Dependent repos
Envoy AI Gateway0
Keywords AI–
Github stars
Envoy AI Gateway2,229
Keywords AI–
Activity
Commits last 30d
Envoy AI Gateway68
Keywords AI–
Release
Cadence days
Envoy AI Gateway6
Keywords AI–
History
Envoy AI Gateway20 items
Keywords AI–
License
Spdx
Envoy AI GatewayApache-2.0
Keywords AI–
Language
Primary
Envoy AI GatewayGo
Keywords AI–
Market
Availability
Envoy AI Gateway–
Keywords AIAvailable worldwide · Popular in US
Content
Faq
Envoy AI Gateway6 items
Keywords AI7 items

Capabilities

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

Capabilities
Openai compatible API
Envoy AI Gateway✓
Keywords AI✓
Automatic failover
Envoy AI Gateway✓
Keywords AI✓
Routing strategy
Envoy AI GatewayCustom
Keywords AICustom
Caching
Envoy AI GatewaySemantic
Keywords AIExact
Virtual key management
Envoy AI Gateway✓
Keywords AI✓
Budget spend controls
Envoy AI Gateway✓
Keywords AI✓
Rate limiting
Envoy AI Gateway✓
Keywords AI✓
Guardrails moderation
Envoy AI Gateway-
Keywords AI-
Request cost observability
Envoy AI Gateway✓
Keywords AI✓
Streaming support
Envoy AI Gateway✓
Keywords AI-
Deployment model
Envoy AI GatewaySelf hosted
Keywords AIManaged SaaS
Open source
Envoy AI Gateway✓
Keywords AI-
Pricing model
Envoy AI GatewayOpen source self host
Keywords AIUsage based saas

What each one is

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

Envoy AI Gateway

An open-source gateway built on Envoy that centralizes AI traffic management by forwarding OpenAI-compatible requests to various LLM providers with automatic failover, token-based rate limiting, and Kubernetes-native deployment.

Independently observed

Keywords AI

Provides tools for monitoring language model performance, managing prompts, and evaluating language model outputs for engineering teams

Independently observed

Pricing

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

Envoy AI Gateway

Open sourceFree tier

Open-source. Commercial managed hosting and enterprise self-hosted options available.

as of verify ↗

Keywords AI

from $199/moHybridFree tier

Free tier available. Team plan $199/month. Usage add-ons from $1/1k scores and $8/100k logs. Enterprise on request.

  • FreeFree
    • Full platform
    • 2 evaluators
    • 5 prompts
    • Log management
    • Community Discord
  • Team$199/month
    • Everything in Free
    • Unlimited datasets
    • Unlimited evaluators
    • Unlimited prompts
    • Private Slack channel
    • +2 more
  • EnterpriseContact sales
    • Custom packages
    • Volume discount
    • Custom SLAs
    • Dedicated support engineer
    • HIPAA BAA
as of verify ↗

Platform & deployment

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

Platforms
Web
Envoy AI Gateway✗
Keywords AI✓
CLI
Envoy AI Gateway✓
Keywords AI✓
Deployment
Cloud / SaaS
Envoy AI Gateway✓
Keywords AI✓
Self-hosted
Envoy AI Gateway✓
Keywords AI✓
On-premise
Envoy AI Gateway✓
Keywords AI✗
Hybrid
Envoy AI Gateway✓
Keywords AI✗

Integrations

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

Envoy AI Gateway

28 total
  • OpenAI
  • AWS Bedrock
  • Azure OpenAI
  • Google Vertex AI
  • Google Gemini
  • Anthropic
  • Groq
  • Together AI
  • Mistral
  • Cohere
  • DeepInfra
  • DeepSeek
  • Hunyuan
  • Tencent LLM Knowledge Engine
  • SambaNova
  • Grok
  • OIDC
  • cert-manager
  • GCP Vertex AI
  • Gemini
  • vLLM
  • MCP
  • Kubernetes
  • AWS STS
  • +4 more
Independently observed

Keywords AI

4 total
  • PostHog
  • Vercel AI
  • n8n
  • OpenTelemetry
Independently observed
Still deciding?

Envoy AI Gateway or Keywords AI: 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.