Elon Musk Predicts Grok 5 Could Pass Claude Opus 5.5 in 2 or 3 Months
@Dimdv99 @tetsuoai Not as good. Opus 5.5 is a masterpiece. But Grok 5 should exceed Opus 5.5 and maybe that happens in 2 or 3 months, with continued acceleration thereafter.
Context
It is a public timeline from Elon Musk for overtaking Anthropic's strongest model, which users can check him against.
Earlier on Nov 10, Musk said Grok 4.8 had finished pretraining and would reach Bot users in a soft rollout this week. Claude Opus 5.5 is one of Anthropic's top models. A user asked Musk how Grok 4.8 would compare with Opus 5.5.
Deep dive
Asked by a user how Grok 4.8 would compare with Claude Opus 5.5, Elon Musk replied that it would not be as good, calling Opus 5.5 a masterpiece.
Musk added that Grok 5 should exceed Opus 5.5 and that this might happen in 2 or 3 months, with continued acceleration after that. His reply drew more than 1.1 million views, and Polymarket summarized it in a separate post that said Musk predicts Grok 5 will surpass Claude Opus 5.5 and could launch within the next 2 to 3 months.
The reply came in the same thread where Musk described the new Grok training and inference stack, which he said was built in house and derived from work done by the engineers behind Starlink.
This is a prediction, not a release. Musk gave no benchmarks, and the timeline is his own estimate. He also did not say what compute Grok 5 would be trained on or how it would be evaluated against Opus 5.5.
What to expect next
Watch the Grok 4.8 soft rollout this week for early signs of how the rebuilt stack performs, and for any official timeline for Grok 5 from xAI. If Grok 5 arrives in early 2027, it will be compared directly with Anthropic's latest models on coding and reasoning benchmarks, and the 2 to 3 month window gives a clear date to check the claim against.