Stainless Alternative: Migrate Your OpenAPI SDKs to Octri
Stainless wound down its hosted SDK generator in 2026. Octri is the all-in-one alternative: docs and SDKs in 10 languages from your OpenAPI spec, plus built-in monitoring. Migrate free.
Stainless built some of the best SDK tooling developers had used. In May 2026 the team joined Anthropic and wound down the hosted generator. No new signups, no new projects. If you're reading this, you probably have an API that ran on it and a decision to make about what replaces it.
Octri is the obvious landing spot. Same core job: one OpenAPI spec in, a polished docs site and production-ready SDKs across 10 languages out. It also does the one thing Stainless never did. The SDKs monitor themselves in production.
Migrating from Stainless? We'll move your spec over personally during the beta, at no cost. Start free or email sales@octri.dev.
What actually changed with Stainless
- New generation stopped. You can no longer create new SDKs or projects on the hosted platform.
- Your existing SDKs are safe. Anything already generated is yours. Keep it, modify it, extend it however you like.
- What you lose going forward: new SDK generation, automatic regeneration on spec changes, and hosted docs updates. Your published packages won't keep pace with your API on their own anymore.
If your API is still evolving, that last point is the problem. A frozen SDK drifts out of sync with your endpoints. The drift stays invisible until an integrator hits it.
Octri vs. Stainless (legacy) at a glance
| Octri | Stainless (legacy) | |
|---|---|---|
| Docs + SDKs from one OpenAPI spec | ✅ | ✅ |
| SDK languages | 10 (TS, Python, Go, Rust + 6 more) | 8 |
| Regenerate + republish on every merge | ✅ | ✅ (while active) |
| Built-in production SDK monitoring | ✅ de-minified stack traces, tagged to release | ❌ |
| AI-native docs (MCP server, llms.txt, ask-the-docs) | ✅ | Partial |
| Accepting new projects | ✅ | ❌ (wound down) |
| Starting price | Free → $49/mo | n/a |
Migrate in three steps
- Point Octri at the same OpenAPI spec. The source of truth you already gave Stainless. No rewrite. Generating an SDK covers the upload, the two settings to check first, and the build.
- Pick your languages. Start with the ones you shipped before, add others anytime (+$50/mo each). All ten, with install instructions and per-language options.
- Connect GitHub. Every merged PR regenerates your docs and SDKs and republishes to npm, PyPI, crates.io, pkg.go.dev, and the rest. The automation you had, back again. See publishing.
That's the parity path. The upgrade comes free.
If you shaped your old SDKs with a config file, the equivalents live in SDK Studio: client shape for naming and namespacing, retries and timeouts, pagination, and authentication. Inside SDK Studio is the tour.
The thing Stainless never did: monitored SDKs
Once a generated SDK ships inside a customer's app, it's a black box. You don't know when it throws, on which endpoint, for which release. Octri closes that gap. Every SDK it generates reports its own production errors, de-minified and tagged to the exact release. Think of how Sentry works, except you never wire up Sentry. You upload source maps from CI with @octri/monitoring-cli, and the service pairs them on read so a minified production trace resolves back to your source.
In practice, you see which endpoints are breaking for real integrators, ranked by how often. You fix them before the support ticket lands. Migrating off Stainless is a good moment to pick that up, not just to rebuild what you already had.
Start at monitoring setup, which is a toggle and an SDK rebuild, then readable stack traces for the release-matching rule that makes traces resolve. Why generated SDKs break silently explains why we built it this way.
FAQ
Will my package names change? You choose your package names in Octri. If you want to keep publishing under the same names to the same registries, you can (subject to your registry ownership). See publishing for package names and registry connections, and note that Go and Swift publish by git tag rather than to a registry.
Is my existing Stainless-generated SDK still safe to use? Yes. You keep everything Stainless already generated. Octri handles your next generation and everything after it.
Can I keep auto-publishing on merge? Yes. Connect GitHub and Octri regenerates and republishes on every merged PR.
Do I have to turn on monitoring? No, it's opt-in. Your SDKs work fine with it off. We think you'll want it on. Setup is a toggle, then a rebuild so the telemetry config is compiled into your clients.
How much does it cost? Free to start (50 endpoints, 1 language, monitoring included), then $49 / $99 / $199. A fraction of enterprise SDK tooling.
Ready to migrate? Start free and you'll have regenerated, monitored SDKs from your spec in a couple of minutes. Prefer a hand? Email sales@octri.dev and we'll move it for you.
This reflects publicly available information as of July 2026, including Stainless's own announcements about its hosted generator. Details change, so check the source for the latest. Product names and marks belong to their respective owners; Octri is not affiliated with or endorsed by them.
