vioscaleAI
Comparison

LiteLLM vs OpenRouter

No leader: the top candidate OpenRouter has only 0.34 confidence (low), below the 0.35 needed to declare a winner. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

LiteLLM full profile →OpenRouter full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
LiteLLM58
OpenRouter67
Score
vioscaleAI score
LiteLLM58 / 100low · 35%
OpenRouter67 / 100low · 34%
Pricing
Free tier
LiteLLM✓
OpenRouter✓
Model
LiteLLMfreemium
OpenRouterfreemium
Price level
LiteLLMlow
OpenRouterlow
Transparent
LiteLLM✗
OpenRouter✓
Integrations
Count
LiteLLM140
OpenRouter80
Security
Gdpr
LiteLLM–
OpenRouter✓
Trust center
LiteLLM–
OpenRouterhttps://openrouter.ai/privacy
Market
Availability
Content
Faq
LiteLLM5 items
OpenRouter6 items

Capabilities

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

Capabilities
Openai compatible API
LiteLLM✓
OpenRouter✓
Automatic failover
LiteLLM✓
OpenRouter✓
Routing strategy
LiteLLMCost based
OpenRouterCost based
Caching
LiteLLM-
OpenRouterExact
Virtual key management
LiteLLM✓
OpenRouter✓
Budget spend controls
LiteLLM✓
OpenRouter✓
Rate limiting
LiteLLM✓
OpenRouter✓
Guardrails moderation
LiteLLMBuilt in
OpenRouter-
Request cost observability
LiteLLM✓
OpenRouter✓
Streaming support
LiteLLM-
OpenRouter✓
Deployment model
LiteLLMSelf hosted
OpenRouterManaged SaaS
Open source
LiteLLM✓
OpenRouter✓
Pricing model
LiteLLMOpen source self host
OpenRouterUsage based saas

What each one is

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

LiteLLM

An open-source AI gateway that abstracts access to over 140 language model providers behind a single OpenAI-compatible API, enabling teams to implement spend tracking, request routing, and governance controls without changing application code.

Independently observed

OpenRouter

OpenRouter provides a unified, OpenAI-compatible API that consolidates access to over 500 language models from 80+ providers. It features automatic failover for reliability, cost-optimized routing, transparent provider pricing with modest platform fees, and support for multiple deployment and authentication methods.

Independently observed

Pricing

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

LiteLLM

HybridFree tier30-day trial

Free open-source self-hosted tier; Enterprise priced to scale

  • Open SourceFree
    • 100+ LLM providers, one OpenAI API
    • Virtual keys, users & teams
    • Spend tracking
    • Budgets + rate limits
    • LLM fallbacks
    • +3 more
  • EnterpriseContact sales
    • Everything in Open Source, plus:
    • SSO + SCIM
    • OIDC / JWT auth
    • Audit logs
    • Secret managers + key rotation
    • +5 more
as of verify ↗

OpenRouter

HybridFree tier

Free tier with 50 requests/day, or pay-as-you-go at 5.5% markup

  • FreeFree
    • Chat and API access
    • 25+ free models
    • 4 free providers
    • 50 requests/day rate limit
    • Community support
  • Standard5.5% platform fee on provider pricing
    • Pay-as-you-go usage billing
    • 500+ models
    • 80+ providers
    • Email support
    • Budgets and spend controls
    • +2 more
  • BusinessContact sales
    • Fee discounts available
    • 500+ models
    • 80+ providers
    • Custom rate limits
    • Invoicing options
  • EnterpriseContact sales
    • Custom pricing
    • 500+ models
    • 80+ providers
    • Dedicated support team
    • Contractual SLAs
    • +2 more
as of verify ↗

Platform & deployment

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

Platforms
Web
LiteLLM✓
OpenRouter✓
CLI
LiteLLM✓
OpenRouter✓
Deployment
Cloud / SaaS
LiteLLM✓
OpenRouter✓
Self-hosted
LiteLLM✓
OpenRouter✗
On-premise
LiteLLM✓
OpenRouter✗
Air-gapped
LiteLLM✓
OpenRouter✗

Integrations

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

In common (2)
  • OpenAI
  • Anthropic

LiteLLM

36 total - 34 not shared
  • Azure
  • AWS Bedrock
  • Cloudflare
  • Google VertexAI
  • Meta Llama
  • Mistral AI
  • NLP Cloud
  • OVHCloud
  • vLLM
  • Nvidia NIM
  • Slack
  • Discord
  • Microsoft Teams
  • PagerDuty
  • Prometheus
  • AWS Secrets Manager
  • Google Cloud Secret Manager
  • MCP servers
  • Gemini
  • Bedrock
  • VertexAI
  • Langfuse
  • Langsmith
  • Datadog
  • +10 more
Independently observed

OpenRouter

11 total - 9 not shared
  • Vercel AI SDK
  • Claude Code
  • Cursor
  • OpenAI SDK
  • Google
  • Meta
  • Mistral
  • Model Context Protocol (MCP)
  • Terraform
Independently observed
Still deciding?

LiteLLM or OpenRouter: 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.