vioscaleAI
Comparison

One API vs TensorZero

On the evidence we track, TensorZero leads this comparison with a composite score of 56/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

One API full profile →TensorZero full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
One API46
★TensorZero56
Score
vioscaleAI score
One API46 / 100medium · 54%
TensorZero56 / 100low · 48%
Pricing
Free tier
One API✓
TensorZero✓
Model
One APIcommercial
TensorZeroopen_source
Price level
One APIfree
TensorZerofree
Integrations
Count
One API12
TensorZero4
Security
Trust center
One APIhttps://github.com/security
TensorZero–
Vulnerabilities
Adoption
Dependent repos
One API0
TensorZero0
Github stars
One API37,155
TensorZero11,707
Activity
Commits last 30d
One API0
TensorZero–
Release
Cadence days
One API19
TensorZero6
History
One API20 items
TensorZero20 items
License
Spdx
One APIMIT
TensorZeroApache-2.0
Language
Primary
One APIJavaScript
TensorZeroRust
Content
Faq
One API6 items
TensorZero6 items

Capabilities

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

Capabilities
Openai compatible API
One API✓
TensorZero✓
Automatic failover
One API✓
TensorZero✓
Routing strategy
One APILoad based
TensorZero-
Caching
One API-
TensorZero-
Virtual key management
One API✓
TensorZero✓
Budget spend controls
One API✓
TensorZero-
Rate limiting
One API✓
TensorZero-
Guardrails moderation
One API-
TensorZero-
Request cost observability
One API✓
TensorZero✓
Streaming support
One API✓
TensorZero-
Deployment model
One APISelf hosted
TensorZeroSelf hosted
Open source
One API✓
TensorZero✓
Pricing model
One APIOpen source self host
TensorZeroOpen source self host

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

TensorZero

Leader

A self-hosted platform that combines deployment, monitoring, evaluation, and optimization for language model applications. It enables teams to manage multiple model providers through a single interface, measure performance across different configurations, and automatically improve routing strategies and prompts.

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 ↗

TensorZero

Leader
Open source
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✓
TensorZero✓
Deployment
Self-hosted
One API✓
TensorZero✓

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

TensorZero

Leader
4 total - 3 not shared
  • Ollama
  • Slack
  • Teams
Independently observed
Still deciding?

One API or TensorZero: 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.