Braintrust

source

closed

license

Apache-2.0(OSI, client SDKs only, Python/TS/Go/Ruby/C#)

platform

proprietary(Brainstore custom DB, evals/tracing/automation all SaaS)

self-host

enterprise-only(hybrid)

Open SDKs but a closed SaaS core (Brainstore backend, dashboards, automation are proprietary); no OSS core, so 'closed' (not open_core) like LangSmith/Galileo per recipe's closed examples. The Apache-2.0 client SDK is instrumentation only and does not open the product.

• https://github.com/braintrustdata/braintrust-sdk recorded 2026-06-04

  Apache-2.0 license on client SDK; platform itself at braintrust.dev

• https://www.braintrust.dev/ recorded 2026-06-04

  proprietary backend (Brainstore custom DB), SaaS + hybrid enterprise deployment