> Generative AI Studio, Model Garden, and PaLM 2 for Text and Chat are moving from trusted tester availability to preview, meaning everyone with a Google Cloud account has access.

> Codey, Imagen, Embeddings API for images, and RLHF are available in Vertex AI through our trusted tester program, and Chirp, PaLM 2, Embeddings API, and Generative AI Studio for text are available in preview in Vertex AI to everyone with a Google Cloud account.

It seems like you are right and general PaLM 2 is available. Fine-tuned code-generation model (Codey) is not publicly available yet.