Pricing comparison
Fern combines docs and SDKs in one workflow, which is also Sourced's lane. On this page: side-by-side pricing, what scales with usage, and where Sourced's compatibility report changes the migration math.
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02Pricing, side by side
Pricing verified May 2026. Fern's SDK pricing changes per language; confirm on their official page before buying.
Docs previews + TypeScript + Python SDKs from one OpenAPI spec.
Docs + SDK workflow with a strong OpenAPI-native generator.
01Details
OpenAPI-native generation with idiomatic per-language output.
Mature docs platform with custom components.
Multi-language coverage on the SDK side.
02Details
Compatibility report diffs the new SDK against your current package before publish — Sourced-specific.
Pricing per API project with no usage-based scaling.
llms.txt emitted by default; Fern is partial here.
·Example output
One API project with two live SDKs included.
Five live SDK targets, release checks, and repo/publishing readiness.
Only charged after a live SDK is published, not during testing.
Pricing stays simple even when docs and SDKs grow.
| Example | Why it matters | Current result |
|---|---|---|
| Pricing model | Combines live SDK cost basis with simpler per-API-project packaging. | Launch $99/mo, Scale $349/mo, extra live SDKs $99/mo. |
| Billing catalog | Defines Free, Launch, Scale, and Enterprise plans. | Checkout and customer portal wiring are part of the launch plan. |
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