Anthropic established the Mythos-class tier above its Opus models with the June 9, 2026 public release of Claude Fable 5, a safeguarded version of the underlying architecture also deployed as limited-access Claude Mythos 5 for cybersecurity partners. This benchmark—emphasizing advanced agentic capabilities in coding, research, and threat analysis—has intensified competition among leading AI labs, where OpenAI, Google DeepMind, and xAI are advancing their own frontier large language models toward comparable scale and performance. Trader sentiment reflects ongoing uncertainty around safety guardrails, compute constraints, and internal testing timelines, with any verified demonstration of equivalent or superior capabilities from a rival likely to shift implied probabilities rapidly ahead of major developer conferences or earnings updates.
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…?
$226,344 Vol.
Sep 14, 2026
August 31
45%
September 9
65%
September 15
72%
September 30
82%
October 31
86%
$226,344 Vol.
August 31
$67,062 Vol.
45%
September 9
$2,920 Vol.
65%
September 15
$12,939 Vol.
72%
September 30
$102,291 Vol.
82%
October 31
$0 Vol.
86%
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 established the Mythos-class tier above its Opus models with the June 9, 2026 public release of Claude Fable 5, a safeguarded version of the underlying architecture also deployed as limited-access Claude Mythos 5 for cybersecurity partners. This benchmark—emphasizing advanced agentic capabilities in coding, research, and threat analysis—has intensified competition among leading AI labs, where OpenAI, Google DeepMind, and xAI are advancing their own frontier large language models toward comparable scale and performance. Trader sentiment reflects ongoing uncertainty around safety guardrails, compute constraints, and internal testing timelines, with any verified demonstration of equivalent or superior capabilities from a rival likely to shift implied probabilities rapidly ahead of major developer conferences or earnings updates.
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: Aug 6, 2026, 9:37 AM ET
Volume
$226,344End Date
Oct 1, 2026Market Opened
Aug 6, 2026, 9:37 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 established the Mythos-class tier above its Opus models with the June 9, 2026 public release of Claude Fable 5, a safeguarded version of the underlying architecture also deployed as limited-access Claude Mythos 5 for cybersecurity partners. This benchmark—emphasizing advanced agentic capabilities in coding, research, and threat analysis—has intensified competition among leading AI labs, where OpenAI, Google DeepMind, and xAI are advancing their own frontier large language models toward comparable scale and performance. Trader sentiment reflects ongoing uncertainty around safety guardrails, compute constraints, and internal testing timelines, with any verified demonstration of equivalent or superior capabilities from a rival likely to shift implied probabilities rapidly ahead of major developer conferences or earnings updates.
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
$226,344End Date
Oct 1, 2026Market Opened
Aug 6, 2026, 9:37 AM ETResolver
0x65070BE91...Anthropic established the Mythos-class tier above its Opus models with the June 9, 2026 public release of Claude Fable 5, a safeguarded version of the underlying architecture also deployed as limited-access Claude Mythos 5 for cybersecurity partners. This benchmark—emphasizing advanced agentic capabilities in coding, research, and threat analysis—has intensified competition among leading AI labs, where OpenAI, Google DeepMind, and xAI are advancing their own frontier large language models toward comparable scale and performance. Trader sentiment reflects ongoing uncertainty around safety guardrails, compute constraints, and internal testing timelines, with any verified demonstration of equivalent or superior capabilities from a rival likely to shift implied probabilities rapidly ahead of major developer conferences or earnings updates.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions