Dreams research preview now supports Claude Opus 5.

The change matters for Dreams testing because Claude Opus 5 is now an available model.

It sits in Supported models, so Dreams model selection now includes Claude Opus 5.

• Aug 12, 2026OpenAI made it easier to bring documents and saved files into conversations and resume work.
• Aug 12, 2026OpenAI added mobile Voice safeguards that check inactive background conversations and end sessions without a response.
• Aug 12, 2026ChatGPT web now preserves pasted formatting, adds saved files from Library, multi-selects items, and expands search.

This is the world we build in. It moves this fast. We move with it.