Comparison
Multi-language SDK generator with config-driven workflows — and how that lines up against a TypeScript-only, zero-touch generator that auto-rebuilds on every schema change.
Last reviewed: April 23, 2026
TL;DR
Speakeasy is the most visible name in automated SDK generation. Its positioning is breadth: eight supported languages, tight integration with GitHub Actions, and a workflow model where the generated SDK source lives in your repository. If your company already maintains a polyglot SDK catalog and has an engineering team comfortable owning the pipeline, Speakeasy's depth is hard to beat.
SDK Factory is narrower on purpose. We publish one thing — a TypeScript SDK, built from the OpenAPI URL you point us at — and we rebuild it automatically every time your schema changes. There is no GitHub app to install, no workflow YAML in your API repo, and no CLI to run on a schedule. The difference shows up on day one: onboarding is a URL paste, not a PR into your infrastructure.
Neither approach is strictly better. If you need Python + Go + Java SDKs as well, SDK Factory won't serve you; Speakeasy will. If you want a single TypeScript SDK that stays fresh without anyone thinking about it, SDK Factory is the shorter path.
Compiled from Speakeasy’s public documentation at the time of the last review date above.
The concrete shape of the integration — a file that lives in your repo vs a URL pasted into a dashboard. Same outcome, very different footprint.
workflowVersion: 1.0.0
speakeasyVersion: latest
sources:
my-api:
inputs:
- location: ./openapi.yaml
targets:
my-api-ts:
target: typescript
source: my-api
publish:
npm:
token: ${{ secrets.NPM_TOKEN }}Past the pitch — what actually happens on day one, when the schema drifts, and when the upstream breaks.
Speakeasy
Install the Speakeasy GitHub App, run `speakeasy configure` locally, commit the generated .speakeasy/ directory, open a PR, merge, wait for the GitHub Action to run and publish.
SDK Factory
Open the dashboard, paste the OpenAPI URL, pick a registry, click publish. No PR, no merge, no runner waiting. First version is in your registry within minutes.
Speakeasy
Developer edits the spec, commits, opens a PR; the Speakeasy bot opens a follow-up PR updating the generated SDK. Both PRs need review before the SDK ships.
SDK Factory
Polling detects the new hash automatically, rebuilds and publishes a patch version. Consumers see it the next time they `npm install`. No PRs on either side.
Speakeasy
The Action fails, the PR is blocked, the team triages. Logs live inside the GitHub Actions run — you own the recovery.
SDK Factory
The pipeline flags the App as REQUIRE_ACTION, stops crawling, surfaces the upstream error in the dashboard, and holds the last good version of the SDK in place on the registry.
Free tier for OSS and small use, paid tiers scale with SDK count + features, enterprise pricing on request
Free (1 app). $10/mo Premium (5 apps). $30/mo Pro (unlimited apps + rollback). Published publicly, no sales call.
View our pricingSDK Factory consumes the OpenAPI document at a URL it can GET. If Speakeasy reads it from a local file, publish the same file at a stable HTTPS URL (static hosting, an API endpoint, or a GitHub raw link are all fine). We poll — we don't need webhooks.
Use a distinct package name during migration (e.g. `@acme/api-client-next` while the Speakeasy build still owns `@acme/api-client`). That lets both SDKs exist in your registry so consumers can switch on their own schedule.
Keep Speakeasy's pipeline running. Install SDK Factory's SDK in a small internal consumer first; eyeball the types, the request shape, and the error surface. The two SDKs won't be symbol-identical — every generator has its own naming — so budget a short refactor PR per consumer.
Once every consumer is on the SDK Factory SDK, delete the .speakeasy/ workflow file from your repo, uninstall the Speakeasy GitHub App from your organisation, and revoke the NPM token it was using.
If you want `@acme/api-client` back on the primary name, publish SDK Factory under that name once you deprecate the Speakeasy output. Use npm's deprecate to mark the old SDK's latest-minus-one versions, then retire them.
Yes. Point SDK Factory at the same OpenAPI URL, publish under a new package name (or the same one to a private registry), and switch consumers over gradually. Our generated code isn't a drop-in replacement at the symbol level — every generator has its own function naming conventions — so plan a short migration PR on the consumer side.
Not today. We ship TypeScript, period. If you need Python / Go / Java alongside TS, Speakeasy is the better choice for that workload. We think the TS-only focus is what lets us ship a better single SDK — but that's a tradeoff, not a free lunch.
It doesn't leak into your repositories. Each build produces a tarball stored in S3 (keyed by deployment ID) which is then published to your configured registry. If you need to audit what shipped, you can download the exact published tarball from our dashboard. No committed-code audit trail, but a reproducible artifact trail.
We rebuild and publish a new version to your registry. We do not semver automatically based on diff — the version number comes from `openapi.info.version` in your schema, so you control when the major bumps. We do detect whether the hash actually changed (after canonicalisation, so cosmetic reformats don't trigger a build) before kicking a new pipeline.
We poll the schema URL on a short cycle, canonicalise the document (sorted keys, stable refs, whitespace stripped) and hash it with SHA-256. Same hash as last check means nothing shipped. Different hash triggers a build. Cosmetic reformats and key reorderings do not cause spurious rebuilds.
One app on the Free tier, no card required. Decide whether it’s a better fit than Speakeasy with your actual schema, not a benchmark.