Side by side
Ramp Router vs TensorZero
Both stand on llm gateway software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIWeb
Ramp Router combines cross-provider model access with routing, fallbacks, and request-level usage tracking. Its stated audience is in the United States, and token charges apply at list price under the free routing offer.
Visit Ramp Router
Free plan APILinuxSelf-hosted+1
TensorZero brings gateway, observability, and experimentation capabilities together in a self-hosted, open-source stack. Its archived, unmaintained status is a substantial consideration before choosing it.
Visit TensorZeroThe facts
| Ramp Router | TensorZero | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Web | API, Linux, Self-hosted, Web |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | router.com | tensorzero.com |
| On llm gateway software | #20 of 34 | #16 of 34 |
Ramp Router: what it does well
- Provides OpenAI- and Anthropic-compatible APIs.
- Can route eligible requests to another available model.
- Includes spend tracking, usage analytics, and budget controls.
- No Ramp card, company account, or LLC is required.
What to know first
- Availability is currently described for the United States.
- Enterprise features are described as coming soon.
- Free routing is offered through 2026; tokens use list pricing.
TensorZero: what it does well
- Unified API for documented model providers
- Supports fallbacks, retries, and traffic routing
- Stores data in a user-configured database
- Deploys with Docker or Kubernetes and Helm
- Free under the Apache 2.0 License
What to know first
- No longer maintained
- GitHub repository is archived and read-only
- Self-hosted deployment is required
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