• Episode E155 “In conversation with Tucker Carlson, plus OpenAI chaos explained” was released on December 1, 2023.(podscripts.co) In that episode Jason Calacanis says that “Sam will be on the pod in the coming weeks” while discussing OpenAI and Sam Altman.(fireflies.ai)
• The next time Sam Altman actually appears as a full guest on the All-In Podcast is episode E178, “In conversation with Sam Altman,” released May 10–11, 2024.(allin.onpodcastai.com) Multiple episode listings and summaries confirm this as his post-December-2023 guest appearance.
• The gap from December 1, 2023 to May 10, 2024 is about 5½ months (roughly 23 weeks), far longer than what is normally meant by “the coming weeks” or “within a few weeks.” Since the prediction explicitly constrained the timing to that short window, it was not met even though Altman did eventually appear on the show.

Therefore, the prediction that Sam Altman would appear as a guest on a future All-In episode within a few weeks of the December 1, 2023 episode is wrong.