What is 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.
One API pricing
We don't have One API's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What One API does
The capabilities that matter for llm gateways, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Openai compatible API
- ✓
- Automatic failover
- -
- Routing strategy
- -
- Caching
- -
- Virtual key management
- ✓
- Budget spend controls
- ✓
- Rate limiting
- ✓
- Guardrails moderation
- -
- Request cost observability
- ✓
- Streaming support
- ✓
- Deployment model
- Self hosted
- Open source
- ✓
- Pricing model
- Open source self host
Platform & deployment
Independently observed- CLI
- Web
- Self-hosted
Integrations (13)
Independently observed- OpenAI
- Azure OpenAI
- Anthropic Claude
- Google Gemini
- DeepSeek
- ByteDance Douyin
- ChatGLM
- Baidu ERNIE Bot
- iFLYTEK Spark
- Alibaba Tongyi Qianwen
- 360 Brain
- Tencent Hunyuan
- Cloudflare Gateway
Security & compliance
Known vulnerabilities: 2 (1 in the last 12 months), max severity MODERATE sourcea count reflects scale & disclosure, not quality
One API alternatives
Other llm gateways we track, ranked by the same independent score.
- Cloudflare AI GatewayMonitor and manage AI application traffic and costslow · 37%
- LiteLLMUnified API gateway that routes requests across 100+ LLM providers through a single OpenAI-compatible interfacelow · 36%
- OpenRouterA unified API gateway providing single-point access to hundreds of AI language models from multiple providerslow · 36%
- UnifyVirtual AI teammates that automate work across your existing toolsmedium · 55%
- Eden AIUnified gateway providing access to hundreds of AI models from multiple providers through a single standardized APIhigh · 76%
- Not Diamondlow · 5%
The Vioscale score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for One API, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Capabilities | 87 | 0.08 | 7.3 | ✓ |
| Price level | 100 | 0.05 | 5.2 | ✓ |
| Release cadence | 89 | 0.05 | 4.7 | ✓ |
| Integrations | 33 | 0.09 | 3.1 | ✓ |
| Stars | 86 | 0.03 | 2.2 | ✓ |
| Reliability | 0 | 0.07 | 0.0 | - |
| Dependent projects | 0 | 0.06 | 0.0 | ✓ |
| Development activity | 0 | 0.09 | 0.0 | ✓ |
| Security posture | 0 | 0.07 | 0.0 | - |
| Package downloads | 0 | 0.14 | 0.0 | - |
| Security score | 0 | 0.04 | 0.0 | - |
| Pricing transparency | 0 | 0.08 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 0 | mediumsource · 2026-08-26 · 65% |
Adoption
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Open source: Yes · Pricing model: open-source-self-host · Rate limiting: Yes · Deployment model: self-hosted · Streaming support: Yes · Budget spend controls: Yes | mediumsource · 2026-08-21 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 13 | mediumsource · 2026-08-21 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | JavaScript | highsource · 2026-08-26 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-08-26 · 95% |
Pricing
Release
Security
| Attribute | Value | Evidence |
|---|---|---|
| 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 | highsource · 2026-08-26 · 90% |