Comparison

One API vs OpenRouter

On the evidence we track, OpenRouter leads this comparison with a composite score of 80/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

One API full profile →OpenRouter full profile →

Machine formatsJSON Markdown GraphQLor send Accept: application/json

One API48

★OpenRouter80

Attribute comparison across 2 tools
Attribute	One API	OpenRouterLeader
Vioscale score	48 / 100low · 27%	80 / 100low · 36%
Pricing
Free tierpricing.free_tier	-	✓
Modelpricing.model	commercial	freemium
Price levelpricing.price_level	free	low
Transparentpricing.transparent	-	✓
Integrations
Countintegrations.count	13	80
Security
Gdprsecurity.gdpr	-	✓
Vulnerabilitiessecurity.vulnerabilities	Count: 2 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fsongquanpeng%2Fone-api&per_page=100 · Last 12m: 1 · Max severity: MODERATE	-
Adoption
Dependent reposadoption.dependent_repos	0	-
Github starsadoption.github_stars	36,589	-
Activity
Commits last 30dactivity.commits_last_30d	0	-
Release
Cadence daysrelease.cadence_days	19	-
Historyrelease.history	20 items	-
License
Spdxlicense.spdx	MIT	-
Language
Primarylanguage.primary	JavaScript	-
Market
Availabilitymarket.availability	-	Available worldwide

Score

Vioscale score

One API48 / 100low · 27%

OpenRouter80 / 100low · 36%

Pricing

Free tier

One API–

OpenRouter✓

Model

One APIcommercial

OpenRouterfreemium

Price level

One APIfree

OpenRouterlow

Transparent

One API–

OpenRouter✓

Integrations

Count

One API13

OpenRouter80

Security

Gdpr

One API–

OpenRouter✓

Vulnerabilities

One APICount: 2 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fsongquanpeng%2Fone-api&per_page=100 · Last 12m: 1 · Max severity: MODERATE

OpenRouter–

Adoption

Dependent repos

One API0

OpenRouter–

Github stars

One API36,589

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

Capabilities

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

Capability comparison for Llm Gateways
Capability	One API	OpenRouter
Capabilities
Openai compatible API	✓	✓
Automatic failover	-	✓
Routing strategy	-	Cost based
Caching	-	Exact
Virtual key management	✓	✓
Budget spend controls	✓	✓
Rate limiting	✓	✓
Guardrails moderation	-	-
Request cost observability	✓	✓
Streaming support	✓	✓
Deployment model	Self hosted	Managed SaaS
Open source	✓	✓
Pricing model	Open source self host	Usage based saas

Capabilities

Openai compatible API

One API✓

OpenRouter✓

Automatic failover

One API-

OpenRouter✓

Routing strategy

One API-

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

Leader

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.

One API

Open source

as of 2026-08-21verify ↗

OpenRouter

Leader

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 2026-08-21verify ↗

Platform & deployment

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

Platform and deployment support comparison
Supports	One API	OpenRouter
WebPlatforms	✓	✓
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✗	✓
Self-hostedDeployment	✓	✗

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

13 total - 12 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

Independently observed

OpenRouter

Leader

11 total - 10 not shared

Vercel AI SDK
Claude Code
Cursor
OpenAI SDK
Anthropic
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.