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Is a mystery frontier model called 'Obsidian 3' about to be revealed?

UnconfirmedLast checked
AnthropicFirst seen

Current progress

No conclusive verdict. 36Kr, citing 新智元, reports that after Artificial Analysis released Intelligence Index v5 (Claude Opus 5.5 taking #1, Gemini 4 Carbon briefly overtaking it), a mystery model codenamed 'Obsidian 3' surfaced, with clues pointing to the same lab.

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What we are checking

A mysterious model codenamed 'Obsidian 3' surfaced on the Artificial Analysis Intelligence Index v5 right after Claude Opus 5.5 took the top spot and Gemini 4 Carbon was released, with clues pointing to Anthropic
Original source
36Kr (via 新智元)
Oct 29, 2026
Claim deadline
No stated deadline
Review due
Nov 28, 2026 ET

How we track and resolve claims →

Timeline

Unconfirmed

36Kr, citing 新智元, reports that after Artificial Analysis released Intelligence Index v5 (Claude Opus 5.5 taking #1, Gemini 4 Carbon briefly overtaking it), a mystery model codenamed 'Obsidian 3' surfaced, with clues pointing to the same lab.

Source: 36Kr (via 新智元)
Quick answers
Has Anthropic confirmed it?
No. Anthropic has not confirmed it as of Oct 29.
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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