OpenPipe

license

Apache-2.0(OSI, OpenPipe Inc.

source

public

methods

RL(GRPO)+SFT trajectory training

managed-tier

OpenPipe hosted training/serving SaaS on top of the OSS lib

core-gated

gated

Core ART library is OSI-licensed (Apache-2.0) and fully public; OpenPipe's revenue product is a managed training/hosting platform layered on top, so open_core.

• https://github.com/OpenPipe/ART/blob/main/LICENSE recorded 2026-06-04

  Apache-2.0 license text (OpenPipe, Inc. 2025; LGPL-3.0 notice for vendored portions)

• https://github.com/OpenPipe/ART recorded 2026-06-04

  ART = open source GRPO RL trainer; v0.5.17 release; active dev