Stainless
Generated hand-crafted-feeling API SDKs in many languages from an OpenAPI specification.
why this verdict
Cancel it — switch to Speakeasy
Speakeasy and OpenAPI Generator now cover the same core job on a free tier, so the $99/mo is optional.
- A named launch, not a vibe named, unlinked
- Anthropic hiring the team; the hosted SDK generator was wound down. Anthropic, May 18, 2026 — no announcement link recorded yet.
- How much of the job it covers all of it editorial call
- The whole core job — the thing the subscription was actually for.
- Is there a free way to do it? yes
- 2 of 3 listed replacements have a usable free tier: Speakeasy and OpenAPI Generator.
- What the call is worth $1,188/yr
- $99/mo at the entry paid tier — $1,188 a year per seat.
- Threatened by
- Anthropic
- Since
- May 18, 2026
- List price
- $99/mo
- Per year
- $1,188
The backstory
Stainless generated typed client libraries from an OpenAPI spec and was used by several well-known API companies to publish their official SDKs. In May 2026 its founder announced the team was joining Anthropic to work on the Claude Platform, and Stainless began winding down its hosted products including the SDK generator. New signups and new projects were closed, and existing customers were pointed to a transition path. When the product itself stops accepting users, the verdict writes itself.
Escape hatches
switching could free up $1,188/yrSDK generation plus a hosted documentation portal
buildwithfern.com open_in_newMulti-language SDK generation with a free single-SDK tier
speakeasy.com open_in_newFree community generator supporting dozens of targets
openapi-generator.tech open_in_new2 of 3 replacements have a usable free tier.
