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icon for Next Mythos-Class Model released by…?

Next Mythos-Class Model released by…?

icon for Next Mythos-Class Model released by…?

Next Mythos-Class Model released by…?

Sep 30

Sep 30

$1,023,303 Vol.

Sep 1, 2026
Polymarket

$1,023,303 Vol.

Polymarket

September 1

$94,732 Vol.

31%

September 2

$52,179 Vol.

45%

September 4

$27,333 Vol.

77%

September 3

$2,610 Vol.

73%

September 7

$21,071 Vol.

81%

September 9

$99,032 Vol.

81%

September 15

$63,582 Vol.

88%

September 30

$203,559 Vol.

93%

October 31

$38,550 Vol.

98%

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 release of the first public Mythos-class models, Claude Fable 5 and restricted Mythos 5, set the current baseline after the April Mythos Preview, establishing a roughly three-month iteration cycle that traders now use to time expectations. Recent U.S. government approvals for expanded partner access and ongoing safety classifier refinements have kept focus on Anthropic, while competitive pressure from OpenAI’s new frontier releases and other labs’ agentic coding advances adds uncertainty about whether a rival could claim the next “Mythos-class” designation. Key upcoming catalysts include potential developer conferences, benchmark updates, and any official announcements in the first week of September that could resolve near-term date markets and shift sentiment on the leader.

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.
Volume
$1,023,303
End Date
Sep 30, 2026
Market Opened
Aug 28, 2026, 5:20 AM ET
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.
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 release of the first public Mythos-class models, Claude Fable 5 and restricted Mythos 5, set the current baseline after the April Mythos Preview, establishing a roughly three-month iteration cycle that traders now use to time expectations. Recent U.S. government approvals for expanded partner access and ongoing safety classifier refinements have kept focus on Anthropic, while competitive pressure from OpenAI’s new frontier releases and other labs’ agentic coding advances adds uncertainty about whether a rival could claim the next “Mythos-class” designation. Key upcoming catalysts include potential developer conferences, benchmark updates, and any official announcements in the first week of September that could resolve near-term date markets and shift sentiment on the leader.

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.
Volume
$1,023,303
End Date
Sep 30, 2026
Market Opened
Aug 28, 2026, 5:20 AM ET
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.

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Frequently Asked Questions

"Next Mythos-Class Model released by…?" is a prediction market on Polymarket with 11 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "October 31" at 98%, followed by "September 30" at 93%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 98¢ implies that the market collectively assigns a 98% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "Next Mythos-Class Model released by…?" has generated $1 million in total trading volume since the market launched on Jun 10, 2026. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "Next Mythos-Class Model released by…?," browse the 11 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Next Mythos-Class Model released by…?" is "October 31" at 98%, meaning the market assigns a 98% chance to that outcome. The next closest outcome is "September 30" at 93%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Next Mythos-Class Model released by…?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.