Anthropic’s June 9, 2026 launch of Claude Fable 5—the first generally available Mythos-class model above the Opus tier—has anchored trader sentiment around the company’s development cadence for the next iteration. The prior preview arrived in April and full public access followed roughly two months later, supported by ongoing safety classifier refinements and Project Glasswing deployments that delivered benchmark gains in cybersecurity and biology tasks. With the market assigning 72% implied probability to a September 30 release, traders are weighing Anthropic’s responsible scaling policy timeline, recent redeployment of Mythos 5 access in July, and competitive pressure from other frontier labs against the technical and regulatory hurdles of scaling agentic capabilities while maintaining safeguards.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedNext Mythos-Class Model released by…?
Next Mythos-Class Model released by…?
$109,043 Vol.
Sep 30, 2026
August 31
20%
September 15
44%
September 30
75%
$109,043 Vol.
August 31
$31,003 Vol.
20%
September 15
$21 Vol.
44%
September 30
$35,946 Vol.
75%
On June 9, 2026, Anthropic released the Mythos-class model Claude Fable 5.
This market will resolve to "Yes" if Anthropic releases the next Mythos-class model and makes it available to the general public by the listed date (ET). Otherwise, this market will resolve to "No."
Any model whose official name includes “Mythos,” or that Anthropic officially describes as a “Mythos-class” model or similar, will qualify for this market’s resolution.
For this market to resolve to "Yes," the qualifying model (as defined above) 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 be clearly defined and publicly announced by Anthropic as being accessible to the general public.
If a qualifying model is made publicly accessible and labeled with the relevant version name within the company’s official website, this will qualify as “publicly announced”. 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 under the rules will not qualify.
The primary resolution source for this market will be official information from Anthropic; however, a consensus of credible reporting will also be used.Anthropic’s June 9, 2026 launch of Claude Fable 5—the first generally available Mythos-class model above the Opus tier—has anchored trader sentiment around the company’s development cadence for the next iteration. The prior preview arrived in April and full public access followed roughly two months later, supported by ongoing safety classifier refinements and Project Glasswing deployments that delivered benchmark gains in cybersecurity and biology tasks. With the market assigning 72% implied probability to a September 30 release, traders are weighing Anthropic’s responsible scaling policy timeline, recent redeployment of Mythos 5 access in July, and competitive pressure from other frontier labs against the technical and regulatory hurdles of scaling agentic capabilities while maintaining safeguards.
On June 9, 2026, Anthropic released the Mythos-class model Claude Fable 5.
This market will resolve to "Yes" if Anthropic releases the next Mythos-class model and makes it available to the general public by the listed date (ET). Otherwise, this market will resolve to "No."
Any model whose official name includes “Mythos,” or that Anthropic officially describes as a “Mythos-class” model or similar, will qualify for this market’s resolution.
For this market to resolve to "Yes," the qualifying model (as defined above) 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 be clearly defined and publicly announced by Anthropic as being accessible to the general public.
If a qualifying model is made publicly accessible and labeled with the relevant version name within the company’s official website, this will qualify as “publicly announced”. 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 under the rules will not qualify.
The primary resolution source for this market will be official information from Anthropic; however, a consensus of credible reporting will also be used.
This market will resolve to "Yes" if Anthropic releases the next Mythos-class model and makes it available to the general public by the listed date (ET). Otherwise, this market will resolve to "No."
Any model whose official name includes “Mythos,” or that Anthropic officially describes as a “Mythos-class” model or similar, will qualify for this market’s resolution.
For this market to resolve to "Yes," the qualifying model (as defined above) 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 be clearly defined and publicly announced by Anthropic as being accessible to the general public.
If a qualifying model is made publicly accessible and labeled with the relevant version name within the company’s official website, this will qualify as “publicly announced”. 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 under the rules will not qualify.
The primary resolution source for this market will be official information from Anthropic; however, a consensus of credible reporting will also be used.
Market Opened: Jun 10, 2026, 11:10 AM ET
Volume
$109,043End Date
Sep 30, 2026Market Opened
Jun 10, 2026, 11:10 AM ETResolver
0x65070BE91...On June 9, 2026, Anthropic released the Mythos-class model Claude Fable 5.
This market will resolve to "Yes" if Anthropic releases the next Mythos-class model and makes it available to the general public by the listed date (ET). Otherwise, this market will resolve to "No."
Any model whose official name includes “Mythos,” or that Anthropic officially describes as a “Mythos-class” model or similar, will qualify for this market’s resolution.
For this market to resolve to "Yes," the qualifying model (as defined above) 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 be clearly defined and publicly announced by Anthropic as being accessible to the general public.
If a qualifying model is made publicly accessible and labeled with the relevant version name within the company’s official website, this will qualify as “publicly announced”. 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 under the rules will not qualify.
The primary resolution source for this market will be official information from Anthropic; however, a consensus of credible reporting will also be used.Anthropic’s June 9, 2026 launch of Claude Fable 5—the first generally available Mythos-class model above the Opus tier—has anchored trader sentiment around the company’s development cadence for the next iteration. The prior preview arrived in April and full public access followed roughly two months later, supported by ongoing safety classifier refinements and Project Glasswing deployments that delivered benchmark gains in cybersecurity and biology tasks. With the market assigning 72% implied probability to a September 30 release, traders are weighing Anthropic’s responsible scaling policy timeline, recent redeployment of Mythos 5 access in July, and competitive pressure from other frontier labs against the technical and regulatory hurdles of scaling agentic capabilities while maintaining safeguards.
On June 9, 2026, Anthropic released the Mythos-class model Claude Fable 5.
This market will resolve to "Yes" if Anthropic releases the next Mythos-class model and makes it available to the general public by the listed date (ET). Otherwise, this market will resolve to "No."
Any model whose official name includes “Mythos,” or that Anthropic officially describes as a “Mythos-class” model or similar, will qualify for this market’s resolution.
For this market to resolve to "Yes," the qualifying model (as defined above) 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 be clearly defined and publicly announced by Anthropic as being accessible to the general public.
If a qualifying model is made publicly accessible and labeled with the relevant version name within the company’s official website, this will qualify as “publicly announced”. 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 under the rules will not qualify.
The primary resolution source for this market will be official information from Anthropic; however, a consensus of credible reporting will also be used.
This market will resolve to "Yes" if Anthropic releases the next Mythos-class model and makes it available to the general public by the listed date (ET). Otherwise, this market will resolve to "No."
Any model whose official name includes “Mythos,” or that Anthropic officially describes as a “Mythos-class” model or similar, will qualify for this market’s resolution.
For this market to resolve to "Yes," the qualifying model (as defined above) 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 be clearly defined and publicly announced by Anthropic as being accessible to the general public.
If a qualifying model is made publicly accessible and labeled with the relevant version name within the company’s official website, this will qualify as “publicly announced”. 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 under the rules will not qualify.
The primary resolution source for this market will be official information from Anthropic; however, a consensus of credible reporting will also be used.
Volume
$109,043End Date
Sep 30, 2026Market Opened
Jun 10, 2026, 11:10 AM ETResolver
0x65070BE91...Anthropic’s June 9, 2026 launch of Claude Fable 5—the first generally available Mythos-class model above the Opus tier—has anchored trader sentiment around the company’s development cadence for the next iteration. The prior preview arrived in April and full public access followed roughly two months later, supported by ongoing safety classifier refinements and Project Glasswing deployments that delivered benchmark gains in cybersecurity and biology tasks. With the market assigning 72% implied probability to a September 30 release, traders are weighing Anthropic’s responsible scaling policy timeline, recent redeployment of Mythos 5 access in July, and competitive pressure from other frontier labs against the technical and regulatory hurdles of scaling agentic capabilities while maintaining safeguards.
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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