Codex cli is open source rust project (Claude Code is not). Whisper is an open weight ASR/STT model. GPT-OSS is an open weight LLM that can run locally and is still very capable. CLIP is an open source model used for image encoding. Just some of the open contributions from OpenAI

All these were released way late for a company called "Open" AI. But go on, keep defending the billion dollar corporation.