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Has OpenAI launched or confirmed Arena anonymous model fe-pichu?

UnconfirmedLast checked
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Verdict

Unconfirmed. On Oct 27, 2026 an X post by @leo114119 said a new OpenAI-linked model appeared on Arena with test codename fe-pichu and attached a screenshot. Others have pointed at OpenAI based on tokenizer and Arena context, but OpenAI has not announced or confirmed fe-pichu. Kept Unconfirmed (not Debunked); not added to the daily brief.

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What we are checking

Arena anonymous model fe-pichu (widely attributed toward OpenAI; not officially announced)
Original source
X post by @leo114119
Oct 27, 2026
Claim deadline
No stated deadline
Review due
Nov 26, 2026 ET

How we track and resolve claims →

Timeline

Unconfirmed

On Oct 27, 2026 @leo114119 posted that an OpenAI-linked new model appeared on Arena with test codename fe-pichu, attaching a screenshot; not an official OpenAI announcement. (post text: "Open 新模型在Arena出现了。。。测试代号：fe-pichu....")

Source: X post by @leo114119
Quick answers
Has OpenAI confirmed it?
No. OpenAI has not confirmed it as of Oct 28.
How we label rumors
Unconfirmed
Circulating with at least one public source we can link to; no official confirmation.
Reported
Reported by a news outlet; not confirmed by the company.
Confirmed
Confirmed by the company or another official source.
Debunked
Denied by the company, retracted by the original source, or shown to be false by the evidence.

We record what sources show, with dates. We don't predict or score how likely a rumor is.

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