**Anthropic’s June 30, 2026 launch of Claude Sonnet 5**—its most agentic mid-tier model yet with improved reasoning, tool use, browser/terminal autonomy, and coding benchmarks approaching Opus 4.8 at lower cost—drives current trader expectations for the next Sonnet iteration. Historical cadence shows Sonnet 4.6 arriving in February 2026 after Sonnet 4.5 the prior September, pointing to a roughly four-to-seven-month cycle. With no official timeline announced, market-implied odds cluster around an early-to-mid-October release, reflecting competitive pressure from OpenAI and Google model updates plus Anthropic’s pattern of frequent incremental improvements. Key upcoming catalysts include any developer conference mentions, API changelog signals, or competitive benchmark releases that could accelerate or delay the next version.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$15,346 Vol.
Sep 30, 2026
September 30
22%
October 31
90%
December 31
98%
$15,346 Vol.
September 30
$910 Vol.
22%
October 31
$6,941 Vol.
90%
December 31
$3,757 Vol.
98%
This market will resolve to "Yes" if Anthropic's next Claude Sonnet model is made available to the general public by the specified date (ET). Otherwise, this market will resolve to "No."
Claude Sonnet refers to a model by Anthropic explicitly named Sonnet. Qualifying models include Claude Sonnet 5.1, Claude Sonnet 5.5, Sonnet 6, or any other Sonnet variants. Models under any other name, such as Opus, Haiku, Fable, or Mythos, will not qualify, unless the model is explicitly and officially named Sonnet 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 June 30, 2026 launch of Claude Sonnet 5**—its most agentic mid-tier model yet with improved reasoning, tool use, browser/terminal autonomy, and coding benchmarks approaching Opus 4.8 at lower cost—drives current trader expectations for the next Sonnet iteration. Historical cadence shows Sonnet 4.6 arriving in February 2026 after Sonnet 4.5 the prior September, pointing to a roughly four-to-seven-month cycle. With no official timeline announced, market-implied odds cluster around an early-to-mid-October release, reflecting competitive pressure from OpenAI and Google model updates plus Anthropic’s pattern of frequent incremental improvements. Key upcoming catalysts include any developer conference mentions, API changelog signals, or competitive benchmark releases that could accelerate or delay the next version.
This market will resolve to "Yes" if Anthropic's next Claude Sonnet model is made available to the general public by the specified date (ET). Otherwise, this market will resolve to "No."
Claude Sonnet refers to a model by Anthropic explicitly named Sonnet. Qualifying models include Claude Sonnet 5.1, Claude Sonnet 5.5, Sonnet 6, or any other Sonnet variants. Models under any other name, such as Opus, Haiku, Fable, or Mythos, will not qualify, unless the model is explicitly and officially named Sonnet 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 Sonnet refers to a model by Anthropic explicitly named Sonnet. Qualifying models include Claude Sonnet 5.1, Claude Sonnet 5.5, Sonnet 6, or any other Sonnet variants. Models under any other name, such as Opus, Haiku, Fable, or Mythos, will not qualify, unless the model is explicitly and officially named Sonnet 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, 9:06 AM ET
Volume
$15,346End Date
Jan 1, 2027Market Opened
Sep 3, 2026, 9:06 AM ETResolver
0x65070BE91...This market will resolve to "Yes" if Anthropic's next Claude Sonnet model is made available to the general public by the specified date (ET). Otherwise, this market will resolve to "No."
Claude Sonnet refers to a model by Anthropic explicitly named Sonnet. Qualifying models include Claude Sonnet 5.1, Claude Sonnet 5.5, Sonnet 6, or any other Sonnet variants. Models under any other name, such as Opus, Haiku, Fable, or Mythos, will not qualify, unless the model is explicitly and officially named Sonnet 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 June 30, 2026 launch of Claude Sonnet 5**—its most agentic mid-tier model yet with improved reasoning, tool use, browser/terminal autonomy, and coding benchmarks approaching Opus 4.8 at lower cost—drives current trader expectations for the next Sonnet iteration. Historical cadence shows Sonnet 4.6 arriving in February 2026 after Sonnet 4.5 the prior September, pointing to a roughly four-to-seven-month cycle. With no official timeline announced, market-implied odds cluster around an early-to-mid-October release, reflecting competitive pressure from OpenAI and Google model updates plus Anthropic’s pattern of frequent incremental improvements. Key upcoming catalysts include any developer conference mentions, API changelog signals, or competitive benchmark releases that could accelerate or delay the next version.
This market will resolve to "Yes" if Anthropic's next Claude Sonnet model is made available to the general public by the specified date (ET). Otherwise, this market will resolve to "No."
Claude Sonnet refers to a model by Anthropic explicitly named Sonnet. Qualifying models include Claude Sonnet 5.1, Claude Sonnet 5.5, Sonnet 6, or any other Sonnet variants. Models under any other name, such as Opus, Haiku, Fable, or Mythos, will not qualify, unless the model is explicitly and officially named Sonnet 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 Sonnet refers to a model by Anthropic explicitly named Sonnet. Qualifying models include Claude Sonnet 5.1, Claude Sonnet 5.5, Sonnet 6, or any other Sonnet variants. Models under any other name, such as Opus, Haiku, Fable, or Mythos, will not qualify, unless the model is explicitly and officially named Sonnet 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
$15,346End Date
Jan 1, 2027Market Opened
Sep 3, 2026, 9:06 AM ETResolver
0x65070BE91...**Anthropic’s June 30, 2026 launch of Claude Sonnet 5**—its most agentic mid-tier model yet with improved reasoning, tool use, browser/terminal autonomy, and coding benchmarks approaching Opus 4.8 at lower cost—drives current trader expectations for the next Sonnet iteration. Historical cadence shows Sonnet 4.6 arriving in February 2026 after Sonnet 4.5 the prior September, pointing to a roughly four-to-seven-month cycle. With no official timeline announced, market-implied odds cluster around an early-to-mid-October release, reflecting competitive pressure from OpenAI and Google model updates plus Anthropic’s pattern of frequent incremental improvements. Key upcoming catalysts include any developer conference mentions, API changelog signals, or competitive benchmark releases that could accelerate or delay the next version.
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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