Tetrate alternative
A Tetrate alternative built for self-serve
Tetrate comes from the service-mesh world, and its AI gateway reflects that: FinOps, cost attribution, and governance at platform scale, deployed and operated like infrastructure. If you have a platform team and a mesh, that's a strength. If you're a developer who just wants a governed endpoint today, it's a lot of gateway to stand up.
RemKey is the same governance promise without the platform lift. There's nothing to deploy or operate: you get one OpenAI-/Anthropic-compatible base URL, swap it in, and you have classifier routing, PII and injection guardrails, MCP tool-call governance, and a signed audit trail. Cost control comes from the routing itself, cheap prompts stop paying premium prices, rather than from a separate FinOps layer you configure.
This isn't a knock on Tetrate's depth; it's a different buyer. RemKey is for the team that wants security-grade LLM governance to be a 60-second turn-on, not a quarter-long platform project.
Tetrate vs RemKey
| Capability | Tetrate | RemKey |
|---|---|---|
| Deployment model | Platform / self-hosted, mesh-adjacent | ✓ Hosted edge, base-URL swap, nothing to run |
| Time to first governed request | ✗ Platform onboarding | ✓ ~60 seconds |
| Cost control | ✓ FinOps / attribution layer | ✓ Classifier routing (cheap prompts, cheap tier) |
| Classifier routing | Rule/policy routing | ✓ LLM classifier (96% acc. vs 33% keyword) |
| PII + injection guardrails | Governance policies | ✓ Fail-closed on every request |
| Signed, tamper-evident audit trail | Enterprise logging | ✓ Hash-chained + Ed25519-signed |
| MCP tool-call governance | ✗ Not a focus | ✓ Fail-closed allowlist, logged |
| Self-serve, no platform team | ✗ Built for platform teams | ✓ Built for the developer |
Comparison reflects the self-serve experience and public positioning. We credit what Tetrate does well and only claim deltas that are real.
Who each is for
Choose Tetrate if…
Large enterprises with a platform/mesh team who want AI FinOps and governance operated as owned infrastructure alongside their service mesh.
Choose RemKey if…
Developers and lean teams who want the same security-grade governance as a hosted endpoint they turn on today, no platform to deploy, no mesh required.
Migration is a translate step, not a rewrite. Paste your Tetrate config into RemKey's importer. You get an upgrade report, the list of provider keys to connect, and a grandfathered free window so switching costs nothing while you validate.