Inference Labs › Alternatives › vs TensorZero
Inference Labs vs TensorZero
Honest, dated comparison of Inference Labs and TensorZero -- router architecture, eval pipeline, pricing, public utilities, and when to pick each. Updated 2026-05-28.
TensorZero
Open-source framework unifying an LLM gateway, observability, optimization, evaluations, and experimentation.
Strengths
- Open source (Apache 2.0) and self-hostable end-to-end.
- Strong experimentation primitive: define metrics, run A/Bs, optimize prompts and routing weights.
- Native focus on the inner loop of LLM application development.
- Rust-based gateway core for low latency.
Inference Labs
Vendor-neutral multimodal router + cache + eval pipeline. BYO provider keys, per-workspace policy router, JSONL eval/SFT exports, MCP server for Claude Desktop.
Where Inference Labs differs
- Inference Labs ships as a hosted product first; you don't run the gateway, the DB, or the dashboard yourself.
- Public free pricing API + SVG badges + embeddable widgets are zero-auth utilities anyone can integrate.
- MCP server for Claude Desktop / Cursor / Windsurf, plus Python SDK with LangChain adapter.
- Built-in Stripe billing + credit ledger so customer payments and per-workspace budgeting work out of the box.
Feature-by-feature
| Capability | TensorZero | Inference Labs |
|---|---|---|
| Open-source core | Yes (Apache-2.0) | SDK + MCP are OSS; platform is hosted |
| Self-hostable | Yes | Yes (commercial license) |
| Built-in Stripe billing + credit ledger | No | Yes |
| Experimentation / A/B primitive | Yes (strong) | Roadmap |
| Free public pricing API | No | Yes |
| MCP server for Claude Desktop/Cursor | No | Yes |
Which one should you pick?
Pick TensorZero if…
you want to self-host the full stack and you value the experimentation / A/B primitive as a core workflow.
Pick Inference Labs if…
you want a hosted, ready-to-onboard layer with billing + customer accounts + a public price API you can build into your own tools.
Many teams adopt both: TensorZero for one workload (or its specific strength) and Inference Labs for the routing + evaluation layer. The platforms are not mutually exclusive.
Try Inference Labs free. 500 credits, no card required, takes 30 seconds to send your first routed request. Create an account → or read the 5-min quickstart.
Frequently asked
Is this comparison biased toward Inference Labs?
We try to be honest. We name TensorZero's real strengths up front, then describe where Inference Labs is genuinely different -- not better at everything. If you spot something factually wrong, email [email protected] and we will update the page.
Can I use both?
Yes. Inference Labs is BYO-provider-key and never requires you to drop another tool. Many users wire TensorZero for one surface (e.g. observability) and Inference Labs for the routing + eval pipeline.
Where can I see live pricing?
Our public dataset is at /api/prices.json (CC BY 4.0) and the human view is at /benchmarks.html. To estimate your spend, use the cost calculator.