vioscale
Comparison

LiteLLM vs OpenRouter

No clear leader: LiteLLM (81.0) and OpenRouter (79.8) 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.

LiteLLM full profile →OpenRouter full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
LiteLLM81
OpenRouter80
Score
Vioscale score
LiteLLM81 / 100low · 36%updating
OpenRouter80 / 100low · 36%updating
Pricing
Free tier
LiteLLM✓
OpenRouter✓
Model
LiteLLMfreemium
OpenRouterfreemium
Price level
LiteLLMlow
OpenRouterlow
Transparent
LiteLLM✓
OpenRouter✓
Integrations
Count
LiteLLM140
OpenRouter80
Security
Gdpr
LiteLLM–
OpenRouter✓
Market
Availability

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 provides a centralized control point for managing multiple large language models from different providers. It offers virtual key management, spend tracking, budget controls, and intelligent request routing without charging per token.

Independently observed

OpenRouter

OpenRouter aggregates 500+ language models from 80+ providers through a single, OpenAI-compatible API interface. It offers automatic fallback routing, cost control, usage analytics, and data policy management for teams deploying AI applications at scale.

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 tier. Enterprise pricing based on annual request volume, not per-token.

  • Open SourceFree
    • 100+ LLM providers
    • Virtual keys, users & teams
    • Spend tracking
    • Prometheus metrics
    • Logging and alerting
    • +3 more
  • EnterpriseContact sales
    • Everything in Open Source, plus:
    • SSO + SCIM provisioning
    • OIDC / JWT authentication
    • Audit logs on every request
    • Secret manager integration
    • +7 more
as of verify ↗

OpenRouter

HybridFree tier

Free tier available. Pay-as-you-go at 5.5% platform fee. Enterprise from $25k/month.

  • FreeFree
    • 25+ free models
    • 4 free providers
    • Chat and API access
    • Community support
  • Pay-as-you-go5.5% platform fee on model usage, fee discounts available
    • 500+ models from 80+ providers
    • Automatic fallback routing
    • Activity logs and export
    • Auto-routing and preferred vendor selection
    • Budgets and spend controls
    • +4 more
  • EnterpriseContact sales
    • 500+ models, 80+ providers
    • Custom data policies and model/provider routing policies
    • Managed policy enforcement
    • SSO/SAML authentication
    • Contractual SLAs
    • +5 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✗
Hybrid
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

32 total - 30 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
  • +6 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

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