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![TheMattBerman Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::248742423.png) Matthew Berman [@TheMattBerman](/creator/twitter/TheMattBerman) on x 3004 followers
Created: 2025-07-20 13:52:43 UTC

8/ Here's the thing, this is stealth mode.

@OpenAI hasn't officially announced it. It could disappear from the arena tomorrow.

This is either:
X. Early GPT-5 testing infrastructure
X. o3's successor before official API launch
X. A specialized coding variant for enterprise




XXX engagements

![Engagements Line Chart](https://lunarcrush.com/gi/w:600/p:tweet::1946931277552079353/c:line.svg)

**Related Topics**
[specialized](/topic/specialized)
[arena](/topic/arena)
[open ai](/topic/open-ai)
[stealth](/topic/stealth)

[Post Link](https://x.com/TheMattBerman/status/1946931277552079353)