❯ Rumors put several flagship models in testing next week, with an Opus 5.5 checkpoint said to exist

unconfirmedLeak accounts on social platforms claim Sonnet 5.2, Opus 5.2 and two other models are in testing, with confirmations or hints around Grok 4.7 and GPT-6-Sol; a separate post says a leaker found a new checkpoint for Opus 5.5 (codenamed claude-wafer-eap), with release possibly imminent. None of this is officially confirmed; the sourcing is a handful of accounts citing one another.

how to read itWhat stands out is not the list but its density — one roster naming the next tier from Anthropic, OpenAI, Google and xAI at once. For context, the last time density looked like this was three weeks ago, when four labs did each ship a top model in the same week. But the leak accounts have given contradictory version numbers more than once: Opus’s next release was described as both 5.2 and 5.5 on the same day.

how to use itUntil an official statement, the only use for this list is scheduling, not model selection. Teams doing technical selection should not change plans this week; teams planning content can leave a window. The confirmation point is clean: a new version number appearing on Anthropic’s or OpenAI’s official release page. Before that, every version number here is hearsay.

▪ SIGNALOpus’s next version was called two different numbers on the same day — high leak density is not high credibility.