Anthropic introduced Opus 5.5, after which OpenAI released updates to the GPT models -6. According to TechCrunch AI, about 90 minutes passed between these events.

The publication ties this sequence to a period of intense competition around leading AI models. The provided material does not include details on release characteristics, product availability, or user responses.

The significance of the event is currently limited to the pace of announcements: it shows high update activity by the two companies. There is not enough data about Muse or the grounds for inferring a leadership shift in the source.