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Next Fable Model (5.2+) released by October 31, 2026?
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OPENResearch 2h ago
82% chance
−7.0 pts 24hTop traders 12 Yes · 1 NoNews 2 todayNews
- match: Fable
- match: Fable
- match: Fable · Claude Fable
- Walrus Audio revives its Storybook Series with MKII versions of its much-loved Lore and Fable pedalsmatch: Fable
- match: Fable · Anthropic · Claude Fable
- match: Fable
Headlines link to the publisher. Kellian shows titles only.
AI research
What decides it
Yes only if Anthropic makes publicly available, between market creation and Oct 31, 2026 (ET), a model whose name or ID includes "Fable" at version 5.2 or higher (a Fable 6 counts). Open beta or open waitlist counts; closed or private access does not.
Latest
Anthropic's newsroom, with posts dated through Oct 14, shows no Fable announcement after Fable 5.1.
www.anthropic.comAnthropic introduced Claude Haiku 5.5, after Claude Sonnet 5.5 on Sep 28; neither name includes "Fable".
www.anthropic.comAnthropic introduced Claude Opus 5.5, saying it "performs at the level of Claude Fable 5.1 on most work."
www.anthropic.com
Case for Yes
Anthropic released Fable 5 (Jun 9) and Fable 5.1 (Sep 1) 84 days apart, and has shipped Opus, Sonnet and Haiku 5.5 since Sep 22. Reuters reported on Sep 19 that Anthropic was weighing a new model release ahead of an expected IPO.
Case for No
No Fable 5.2+ is announced as of Oct 14; the Fable page lists 5.1 as the latest. Amodei called on Sep 12 for slowing capability gains. The model in the Sep 19 report was not named, and Opus 5.5 followed three days later. Oct 31 is 60 days after Fable 5.1.
What to watch next Anthropic's newsroom and Fable page through Oct 31 ET for any Fable 5.2+ or Fable 6 announcement, and whether access is general (paid plans, API) rather than limited to vetted organizations.
Full research
What decides it
Yes only if Anthropic makes publicly available, between market creation and Oct 31, 2026 (ET), a model whose name or ID includes "Fable" at version 5.2 or higher (a Fable 6 counts). Open beta or open waitlist counts; closed or private access does not. Names without "Fable" never count: Opus 5.5, Sonnet 5.5, Haiku 5.5 or a Mythos model do not qualify, nor does Fable 5.1. Primary source is official Anthropic information, checked against credible reporting.
Earlier
Reuters reported Anthropic was considering releasing an unnamed new model ahead of an expected IPO, and was evaluating its safety as part of the decision.
arynews.tvAnthropic CEO Dario Amodei published an essay arguing "We must slow the pace at which we improve the capabilities of AI models."
www.nbcnewyork.comAnthropic announced Claude Fable 5.1, available to Pro, Max, Team and Enterprise users and via the API as claude-fable-5-1. The Fable page lists no later Fable version.
www.anthropic.comClaude Fable 5 launched; Anthropic's Fable page says access was disrupted on Jun 12 and restored on Jul 1, 2026.
www.anthropic.com
Sources
- Claude Fable (Anthropic) · www.anthropic.com
- Anthropic CEO calls for slowing AI race (NBC) · www.nbcnewyork.com
- Anthropic considers releasing new AI model ahead of IPO, sources say (Reuters via ARY News) · arynews.tv
- Introducing Claude Opus 5.5 (Anthropic) · www.anthropic.com
- Anthropic Newsroom · www.anthropic.com
Research, not advice.
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Rules
- Resolution criteria
- This market will resolve to "Yes" if Anthropic's next Fable model (5.2+) is made available to the general public between market creation and the specified date (ET). Otherwise, this market will resolve to "No". A qualifying model must have a name or model identifier that includes "Fable" and be designated as version 5.2 or higher, regardless of capitalization or surrounding prefixes, suffixes, dates, or descriptors. For example, a version 5.2 or higher named in the same manner as Claude Fable 5 or Claude Fable 5.1 would qualify, including a new whole-number generation such as Claude Fable 6, while models whose name does not include "Fable" or which retain a version designation below 5.2, such as Claude Fable 5.1 or Claude Mythos 5.1, will not qualify. A qualifying model must be launched and publicly accessible, including via open beta or open rolling waitlist signups. A closed beta or any form of private access will not suffice. The release must either be clearly defined and publicly announced by Anthropic as accessible to the general public, or otherwise be made publicly accessible and explicitly labeled on the company's official website. Labeling errors, placeholder text, or version names displayed on the website that do not correspond to a model that is actually accessible to the general public will not qualify. The primary resolution source for this market will be official information from Anthropic, with additional verification from a consensus of credible reporting.Kellian is not affiliated with Polymarket.
Kellian is not affiliated with Polymarket. Research, not financial advice.
