Anthropic’s quiet testing of Claude Fable 5.2, including leaked outputs demonstrating advanced JavaScript animation and mascot generation, has become the main catalyst shifting trader views toward a near-term release. Following the June 2026 launch of Fable 5 and the quicker September 1 release of the cheaper, less-restricted Fable 5.1, the company appears to be iterating rapidly on its Mythos-class large language model. Early benchmarks and user reports suggest meaningful gains in coding, reasoning, and multimodal tasks over prior versions, amid competition from models like GLM-5.2 and OpenAI’s GPT lineup. Traders are watching for confirmation of an Opus 5.5 rollout this week and any public statements on Fable timelines or safeguards, as regulatory scrutiny and internal safety classifiers could still influence the exact public availability date.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$27,509 Vol.
Oct 31, 2026
October 31
79%
December 31
91%
$27,509 Vol.
October 31
$24,907 Vol.
79%
December 31
$2,602 Vol.
91%
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.Anthropic’s quiet testing of Claude Fable 5.2, including leaked outputs demonstrating advanced JavaScript animation and mascot generation, has become the main catalyst shifting trader views toward a near-term release. Following the June 2026 launch of Fable 5 and the quicker September 1 release of the cheaper, less-restricted Fable 5.1, the company appears to be iterating rapidly on its Mythos-class large language model. Early benchmarks and user reports suggest meaningful gains in coding, reasoning, and multimodal tasks over prior versions, amid competition from models like GLM-5.2 and OpenAI’s GPT lineup. Traders are watching for confirmation of an Opus 5.5 rollout this week and any public statements on Fable timelines or safeguards, as regulatory scrutiny and internal safety classifiers could still influence the exact public availability date.
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.
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.
Market Opened: Sep 2, 2026, 8:11 PM ET
Volume
$27,509End Date
Dec 31, 2026Market Opened
Sep 2, 2026, 8:11 PM ETResolver
0x65070BE91...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.Anthropic’s quiet testing of Claude Fable 5.2, including leaked outputs demonstrating advanced JavaScript animation and mascot generation, has become the main catalyst shifting trader views toward a near-term release. Following the June 2026 launch of Fable 5 and the quicker September 1 release of the cheaper, less-restricted Fable 5.1, the company appears to be iterating rapidly on its Mythos-class large language model. Early benchmarks and user reports suggest meaningful gains in coding, reasoning, and multimodal tasks over prior versions, amid competition from models like GLM-5.2 and OpenAI’s GPT lineup. Traders are watching for confirmation of an Opus 5.5 rollout this week and any public statements on Fable timelines or safeguards, as regulatory scrutiny and internal safety classifiers could still influence the exact public availability date.
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.
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.
Volume
$27,509End Date
Dec 31, 2026Market Opened
Sep 2, 2026, 8:11 PM ETResolver
0x65070BE91...Anthropic’s quiet testing of Claude Fable 5.2, including leaked outputs demonstrating advanced JavaScript animation and mascot generation, has become the main catalyst shifting trader views toward a near-term release. Following the June 2026 launch of Fable 5 and the quicker September 1 release of the cheaper, less-restricted Fable 5.1, the company appears to be iterating rapidly on its Mythos-class large language model. Early benchmarks and user reports suggest meaningful gains in coding, reasoning, and multimodal tasks over prior versions, amid competition from models like GLM-5.2 and OpenAI’s GPT lineup. Traders are watching for confirmation of an Opus 5.5 rollout this week and any public statements on Fable timelines or safeguards, as regulatory scrutiny and internal safety classifiers could still influence the exact public availability date.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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