One SDK for every foundation model
Stop rewriting calls between providers. Use one typed interface for OpenAI, Anthropic, Gemini, and self-hosted models.
Ship reliable models with routing, observability, cost controls, and SDKs that stay out of your way.
Stop rewriting calls between providers. Use one typed interface for OpenAI, Anthropic, Gemini, and self-hosted models.
Route around outages, latency spikes, and exhausted quotas with policies your team can understand.
See usage by application, team, model, and customer without stitching together brittle reports.
Connect once and route to every provider from a stable interface.
Build dynamic routing without hiding the decisions your team needs.
Set budgets, controls, and audit trails for every environment.
“Kestrel gave us one reliable layer across six models. Releases that took a week now ship in a day.”
“We can see why every request was routed and what it cost. That changed how we plan capacity.”
“The fallback policies are direct enough for developers and clear enough for compliance.”
| Production capability | Kestrel | Direct APIs | Other gateways |
|---|---|---|---|
| Automatic fallbacks | ✓ | — | ✓ |
| Budget-aware routing | ✓ | — | — |
| Prompt versioning | ✓ | — | ✓ |
| Regional routing | ✓ | — | ✓ |
| End-to-end traces | ✓ | — | ✓ |
tokens routed and governed weekly
request paths evaluated each minute
rolling availability across providers