**Anthropic's latest Haiku model, Claude Haiku 4.5, launched on October 15, 2025, and remains the current efficiency-tier offering as of mid-September 2026.** While Sonnet advanced to version 5 in June, Opus reached version 5 in July, and a new higher tier debuted with Fable 5.1 and Mythos 5.1 on September 1, the Haiku line has seen no successor announced. Historical patterns show Haiku updates typically follow Sonnet releases to deliver comparable coding, agentic, and tool-use performance at lower cost and higher speed, often within weeks. Traders are watching for signals such as internal leaks, competitive pressure from other labs' small models, or Anthropic's next product update, though the company has not published a fixed schedule and Haiku 4.5 carries a retirement notice no earlier than October 2026.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedNEW
Oct 15, 2026
October 15
37%
October 31
61%
December 31
56%
$9,502 Vol.
October 15
$204 Vol.
37%
October 31
$987 Vol.
61%
December 31
$4,559 Vol.
56%
This market will resolve to "Yes" if Anthropic's next Claude Haiku model is made available to the general public by the specified date (ET). Otherwise, this market will resolve to "No."
Claude Haiku refers to a model by Anthropic explicitly named Haiku. Qualifying models include Claude Haiku 4.6, Claude Haiku 5.0, Haiku 5, or any other Haiku variants. Models under any other name, such as Sonnet, Opus, Fable, or Mythos, will not qualify, unless the model is explicitly and officially named Haiku by Anthropic.
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 be either clearly defined and publicly announced by Anthropic as being accessible to the general public or otherwise made publicly accessible and explicitly labeled within 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 latest Haiku model, Claude Haiku 4.5, launched on October 15, 2025, and remains the current efficiency-tier offering as of mid-September 2026.** While Sonnet advanced to version 5 in June, Opus reached version 5 in July, and a new higher tier debuted with Fable 5.1 and Mythos 5.1 on September 1, the Haiku line has seen no successor announced. Historical patterns show Haiku updates typically follow Sonnet releases to deliver comparable coding, agentic, and tool-use performance at lower cost and higher speed, often within weeks. Traders are watching for signals such as internal leaks, competitive pressure from other labs' small models, or Anthropic's next product update, though the company has not published a fixed schedule and Haiku 4.5 carries a retirement notice no earlier than October 2026.
This market will resolve to "Yes" if Anthropic's next Claude Haiku model is made available to the general public by the specified date (ET). Otherwise, this market will resolve to "No."
Claude Haiku refers to a model by Anthropic explicitly named Haiku. Qualifying models include Claude Haiku 4.6, Claude Haiku 5.0, Haiku 5, or any other Haiku variants. Models under any other name, such as Sonnet, Opus, Fable, or Mythos, will not qualify, unless the model is explicitly and officially named Haiku by Anthropic.
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 be either clearly defined and publicly announced by Anthropic as being accessible to the general public or otherwise made publicly accessible and explicitly labeled within 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.
Claude Haiku refers to a model by Anthropic explicitly named Haiku. Qualifying models include Claude Haiku 4.6, Claude Haiku 5.0, Haiku 5, or any other Haiku variants. Models under any other name, such as Sonnet, Opus, Fable, or Mythos, will not qualify, unless the model is explicitly and officially named Haiku by Anthropic.
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 be either clearly defined and publicly announced by Anthropic as being accessible to the general public or otherwise made publicly accessible and explicitly labeled within 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 3, 2026, 9:07 AM ET
Volume
$9,502End Date
Jan 1, 2027Market Opened
Sep 3, 2026, 9:07 AM ETResolver
0x65070BE91...This market will resolve to "Yes" if Anthropic's next Claude Haiku model is made available to the general public by the specified date (ET). Otherwise, this market will resolve to "No."
Claude Haiku refers to a model by Anthropic explicitly named Haiku. Qualifying models include Claude Haiku 4.6, Claude Haiku 5.0, Haiku 5, or any other Haiku variants. Models under any other name, such as Sonnet, Opus, Fable, or Mythos, will not qualify, unless the model is explicitly and officially named Haiku by Anthropic.
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 be either clearly defined and publicly announced by Anthropic as being accessible to the general public or otherwise made publicly accessible and explicitly labeled within 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 latest Haiku model, Claude Haiku 4.5, launched on October 15, 2025, and remains the current efficiency-tier offering as of mid-September 2026.** While Sonnet advanced to version 5 in June, Opus reached version 5 in July, and a new higher tier debuted with Fable 5.1 and Mythos 5.1 on September 1, the Haiku line has seen no successor announced. Historical patterns show Haiku updates typically follow Sonnet releases to deliver comparable coding, agentic, and tool-use performance at lower cost and higher speed, often within weeks. Traders are watching for signals such as internal leaks, competitive pressure from other labs' small models, or Anthropic's next product update, though the company has not published a fixed schedule and Haiku 4.5 carries a retirement notice no earlier than October 2026.
This market will resolve to "Yes" if Anthropic's next Claude Haiku model is made available to the general public by the specified date (ET). Otherwise, this market will resolve to "No."
Claude Haiku refers to a model by Anthropic explicitly named Haiku. Qualifying models include Claude Haiku 4.6, Claude Haiku 5.0, Haiku 5, or any other Haiku variants. Models under any other name, such as Sonnet, Opus, Fable, or Mythos, will not qualify, unless the model is explicitly and officially named Haiku by Anthropic.
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 be either clearly defined and publicly announced by Anthropic as being accessible to the general public or otherwise made publicly accessible and explicitly labeled within 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.
Claude Haiku refers to a model by Anthropic explicitly named Haiku. Qualifying models include Claude Haiku 4.6, Claude Haiku 5.0, Haiku 5, or any other Haiku variants. Models under any other name, such as Sonnet, Opus, Fable, or Mythos, will not qualify, unless the model is explicitly and officially named Haiku by Anthropic.
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 be either clearly defined and publicly announced by Anthropic as being accessible to the general public or otherwise made publicly accessible and explicitly labeled within 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
$9,502End Date
Jan 1, 2027Market Opened
Sep 3, 2026, 9:07 AM ETResolver
0x65070BE91...**Anthropic's latest Haiku model, Claude Haiku 4.5, launched on October 15, 2025, and remains the current efficiency-tier offering as of mid-September 2026.** While Sonnet advanced to version 5 in June, Opus reached version 5 in July, and a new higher tier debuted with Fable 5.1 and Mythos 5.1 on September 1, the Haiku line has seen no successor announced. Historical patterns show Haiku updates typically follow Sonnet releases to deliver comparable coding, agentic, and tool-use performance at lower cost and higher speed, often within weeks. Traders are watching for signals such as internal leaks, competitive pressure from other labs' small models, or Anthropic's next product update, though the company has not published a fixed schedule and Haiku 4.5 carries a retirement notice no earlier than October 2026.
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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