Primary source: https://www.businessinsider.com/anthropic-mythos-latest-ai-model-too-powerful-to-be-released-2026-4?utm_source=chatgpt.com

Resolution criteria

This market resolves to YES if:

1. Anthropic releases a model explicitly named "Claude Mythos" (or simply "Mythos") to the public. Version numbers do not matter. (So "Claude Mythos 5.0" will still count)

2. Anthropic releases a new model, previously referred to as a "Mythos-class" model, that is officially branded and released to the public under the name "Mythos".

This market resolves to NO if neither condition is met by Jan 1, 2028, or if Anthropic permanently shutters the project without such a release.

Official resolution will be determined by public announcements via the official Anthropic News page or their official corporate communications.

Background

In April 2026, reports emerged that Anthropic had developed a highly capable AI model internally referred to as "Mythos," which was deemed too powerful for public release at that time. Anthropic has indicated that this specific iteration will not be released to the public. However, the company has suggested that future "Mythos-class" models—models possessing similar architectural or performance characteristics—may be developed and released openly. This market tracks whether the "Mythos" branding is eventually applied to a publicly available release, either through the original model or a successor.

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