vioscaleAI
Comparison

One API 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.

One API full profile →OpenRouter full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
One API46
OpenRouter67
Score
vioscaleAI score
One API46 / 100medium · 54%
OpenRouter67 / 100low · 34%
Pricing
Free tier
One API✓
OpenRouter✓
Model
One APIcommercial
OpenRouterfreemium
Price level
One APIfree
OpenRouterlow
Transparent
One API–
OpenRouter✓
Integrations
Count
One API12
OpenRouter80
Security
Gdpr
One API–
OpenRouter✓
Trust center
Vulnerabilities
Adoption
Dependent repos
One API0
OpenRouter–
Github stars
One API37,155
OpenRouter–
Activity
Commits last 30d
One API0
OpenRouter–
Release
Cadence days
One API19
OpenRouter–
History
One API20 items
OpenRouter–
License
Spdx
One APIMIT
OpenRouter–
Language
Primary
One APIJavaScript
OpenRouter–
Market
Availability
One API–
OpenRouterAvailable worldwide
Content
Faq
One API6 items
OpenRouter6 items

Capabilities

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

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

What each one is

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

One API

An open-source system for managing and redistributing API access across multiple large language model providers—including OpenAI, Claude, Gemini, and others—through a single OpenAI-compatible API. Deploys as a self-contained binary or Docker container.

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.

One API

Open sourceFree tier
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
One API✓
OpenRouter✓
CLI
One API✗
OpenRouter✓
Deployment
Cloud / SaaS
One API✗
OpenRouter✓
Self-hosted
One API✓
OpenRouter✗

Integrations

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

In common (1)
  • OpenAI

One API

26 total - 25 not shared
  • Azure OpenAI
  • Anthropic Claude
  • Google Gemini
  • DeepSeek
  • ByteDance Douyin
  • ChatGLM
  • Baidu ERNIE Bot
  • iFLYTEK Spark
  • Alibaba Tongyi Qianwen
  • 360 Brain
  • Tencent Hunyuan
  • Cloudflare Gateway
  • Alibaba Qwen
  • Tencent Yuan
  • Baidu Wenxin
  • Byte Doubao
  • 360 AI Brain
  • Claude
  • Gemini
  • Doubao
  • Ernie
  • Spark
  • Qwen
  • 360 Smart Brain
  • +1 more
Independently observed

OpenRouter

11 total - 10 not shared
  • Vercel AI SDK
  • Claude Code
  • Cursor
  • OpenAI SDK
  • Anthropic
  • Google
  • Meta
  • Mistral
  • Model Context Protocol (MCP)
  • Terraform
Independently observed
Still deciding?

One API 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.