Anthropic’s June 2026 launch of Claude Fable 5—the first publicly available Mythos-class large language model with safety classifiers—and the restricted Mythos 5 variant via Project Glasswing reset the frontier benchmark for agentic coding, cybersecurity, and reasoning capabilities. Traders now focus on how competitors respond, with OpenAI’s GPT-5.6 family, Google DeepMind models, and xAI releases viewed as the likeliest challengers given their ongoing scaling and benchmark pursuits. Recent developments include Anthropic’s August expansion of Mythos 5 into enterprise beta for defensive tools and Chinese claims of GLM-5.3 parity on exploit benchmarks, underscoring the competitive and regulatory pressure on unrestricted releases. Key upcoming catalysts include fall developer conferences, earnings reports, and any new government guidance on frontier model access that could accelerate or delay public launches. Market-implied odds reflect this tight race amid rapid capability gains and safety constraints.
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…?
$204,239 Vol.
Aug 31, 2026
August 31
18%
September 9
25%
September 15
54%
September 30
60%
$204,239 Vol.
August 31
$56,340 Vol.
18%
September 9
$726 Vol.
25%
September 15
$10,746 Vol.
54%
September 30
$94,354 Vol.
60%
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 2026 launch of Claude Fable 5—the first publicly available Mythos-class large language model with safety classifiers—and the restricted Mythos 5 variant via Project Glasswing reset the frontier benchmark for agentic coding, cybersecurity, and reasoning capabilities. Traders now focus on how competitors respond, with OpenAI’s GPT-5.6 family, Google DeepMind models, and xAI releases viewed as the likeliest challengers given their ongoing scaling and benchmark pursuits. Recent developments include Anthropic’s August expansion of Mythos 5 into enterprise beta for defensive tools and Chinese claims of GLM-5.3 parity on exploit benchmarks, underscoring the competitive and regulatory pressure on unrestricted releases. Key upcoming catalysts include fall developer conferences, earnings reports, and any new government guidance on frontier model access that could accelerate or delay public launches. Market-implied odds reflect this tight race amid rapid capability gains and safety constraints.
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
$204,239End Date
Oct 1, 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 2026 launch of Claude Fable 5—the first publicly available Mythos-class large language model with safety classifiers—and the restricted Mythos 5 variant via Project Glasswing reset the frontier benchmark for agentic coding, cybersecurity, and reasoning capabilities. Traders now focus on how competitors respond, with OpenAI’s GPT-5.6 family, Google DeepMind models, and xAI releases viewed as the likeliest challengers given their ongoing scaling and benchmark pursuits. Recent developments include Anthropic’s August expansion of Mythos 5 into enterprise beta for defensive tools and Chinese claims of GLM-5.3 parity on exploit benchmarks, underscoring the competitive and regulatory pressure on unrestricted releases. Key upcoming catalysts include fall developer conferences, earnings reports, and any new government guidance on frontier model access that could accelerate or delay public launches. Market-implied odds reflect this tight race amid rapid capability gains and safety constraints.
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
$204,239End Date
Oct 1, 2026Market Opened
Jun 10, 2026, 11:10 AM ETResolver
0x65070BE91...Anthropic’s June 2026 launch of Claude Fable 5—the first publicly available Mythos-class large language model with safety classifiers—and the restricted Mythos 5 variant via Project Glasswing reset the frontier benchmark for agentic coding, cybersecurity, and reasoning capabilities. Traders now focus on how competitors respond, with OpenAI’s GPT-5.6 family, Google DeepMind models, and xAI releases viewed as the likeliest challengers given their ongoing scaling and benchmark pursuits. Recent developments include Anthropic’s August expansion of Mythos 5 into enterprise beta for defensive tools and Chinese claims of GLM-5.3 parity on exploit benchmarks, underscoring the competitive and regulatory pressure on unrestricted releases. Key upcoming catalysts include fall developer conferences, earnings reports, and any new government guidance on frontier model access that could accelerate or delay public launches. Market-implied odds reflect this tight race amid rapid capability gains and safety constraints.
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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