Comparison

LiteLLM vs One API

On the evidence we track, LiteLLM leads this comparison with a composite score of 81/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

LiteLLM full profile →One API full profile →

Machine formatsJSON Markdown GraphQLor send Accept: application/json

★LiteLLM81

One API48

Attribute comparison across 2 tools
Attribute	LiteLLMLeader	One API
Vioscale score	81 / 100low · 36%	48 / 100low · 27%
Pricing
Free tierpricing.free_tier	✓	-
Modelpricing.model	freemium	commercial
Price levelpricing.price_level	low	free
Transparentpricing.transparent	✓	-
Integrations
Countintegrations.count	140	13
Security
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

LiteLLM81 / 100low · 36%

One API48 / 100low · 27%

Pricing

Free tier

LiteLLM✓

One API–

Model

LiteLLMfreemium

One APIcommercial

Price level

LiteLLMlow

One APIfree

Transparent

LiteLLM✓

One API–

Integrations

Count

LiteLLM140

One API13

Security

Vulnerabilities

LiteLLM–

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

Adoption

Dependent repos

LiteLLM–

One API0

Github stars

LiteLLM–

One API36,589

Activity

Commits last 30d

LiteLLM–

One API0

Release

Cadence days

LiteLLM–

One API19

History

LiteLLM–

One API20 items

License

Spdx

LiteLLM–

One APIMIT

Language

Primary

LiteLLM–

One APIJavaScript

Market

Availability

LiteLLMAvailable worldwide

One API–

Capabilities

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

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

Capabilities

Openai compatible API

LiteLLM✓

One API✓

Automatic failover

LiteLLM✓

One API-

Routing strategy

LiteLLMCost based

One API-

Caching

LiteLLM-

One API-

Virtual key management

LiteLLM✓

One API✓

Budget spend controls

LiteLLM✓

One API✓

Rate limiting

LiteLLM✓

One API✓

Guardrails moderation

LiteLLMBuilt in

One API-

Request cost observability

LiteLLM✓

One API✓

Streaming support

LiteLLM-

One API✓

Deployment model

LiteLLMSelf hosted

One APISelf hosted

Open source

LiteLLM✓

One API✓

Pricing model

LiteLLMOpen source self host

One APIOpen source self host

What each one is

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

LiteLLM

Leader

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

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

Pricing

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

LiteLLM

Leader

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 2026-08-19verify ↗

One API

Open source

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	LiteLLM	One API
WebPlatforms	✓	✓
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✓	✗
Self-hostedDeployment	✓	✓
On-premiseDeployment	✓	✗
HybridDeployment	✓	✗
Air-gappedDeployment	✓	✗

Platforms

Web

LiteLLM✓

One API✓

CLI

LiteLLM✓

One API✓

Deployment

Cloud / SaaS

LiteLLM✓

One API✗

Self-hosted

LiteLLM✓

One API✓

On-premise

LiteLLM✓

One API✗

Hybrid

LiteLLM✓

One API✗

Air-gapped

LiteLLM✓

One API✗

Integrations

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

In common (1)

OpenAI

LiteLLM

Leader

32 total - 31 not shared

Anthropic
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
+7 more

Independently observed

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

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