Anthropic’s June 30, 2026 launch of Claude Sonnet 5, positioned as its most agentic mid-tier model yet with strong gains in tool use, autonomous planning, coding, and benchmarks approaching Opus 4.8 at lower cost, reset expectations for the next Sonnet iteration. The company’s accelerated cadence—Sonnet 4.5 in September 2025, 4.6 in February 2026, then Sonnet 5 just four months later—reflects competitive pressure from OpenAI and Google on agentic performance and pricing. With Sonnet 5 now default across free and Pro plans plus API availability at $3/$15 per million tokens, traders watch for signals on the subsequent release, such as new capability benchmarks, developer conferences, or rival model launches that could compress timelines further. No firm date for a follow-on Sonnet has been announced.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedNext Claude Sonnet released by...?
Next Claude Sonnet released by...?
$14,846 Vol.
Sep 30, 2026
September 30
22%
October 31
92%
December 31
97%
$14,846 Vol.
September 30
$815 Vol.
22%
October 31
$6,536 Vol.
92%
December 31
$3,757 Vol.
97%
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, positioned as its most agentic mid-tier model yet with strong gains in tool use, autonomous planning, coding, and benchmarks approaching Opus 4.8 at lower cost, reset expectations for the next Sonnet iteration. The company’s accelerated cadence—Sonnet 4.5 in September 2025, 4.6 in February 2026, then Sonnet 5 just four months later—reflects competitive pressure from OpenAI and Google on agentic performance and pricing. With Sonnet 5 now default across free and Pro plans plus API availability at $3/$15 per million tokens, traders watch for signals on the subsequent release, such as new capability benchmarks, developer conferences, or rival model launches that could compress timelines further. No firm date for a follow-on Sonnet has been announced.
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
$14,846End 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, positioned as its most agentic mid-tier model yet with strong gains in tool use, autonomous planning, coding, and benchmarks approaching Opus 4.8 at lower cost, reset expectations for the next Sonnet iteration. The company’s accelerated cadence—Sonnet 4.5 in September 2025, 4.6 in February 2026, then Sonnet 5 just four months later—reflects competitive pressure from OpenAI and Google on agentic performance and pricing. With Sonnet 5 now default across free and Pro plans plus API availability at $3/$15 per million tokens, traders watch for signals on the subsequent release, such as new capability benchmarks, developer conferences, or rival model launches that could compress timelines further. No firm date for a follow-on Sonnet has been announced.
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
$14,846End Date
Jan 1, 2027Market Opened
Sep 3, 2026, 9:06 AM ETResolver
0x65070BE91...Anthropic’s June 30, 2026 launch of Claude Sonnet 5, positioned as its most agentic mid-tier model yet with strong gains in tool use, autonomous planning, coding, and benchmarks approaching Opus 4.8 at lower cost, reset expectations for the next Sonnet iteration. The company’s accelerated cadence—Sonnet 4.5 in September 2025, 4.6 in February 2026, then Sonnet 5 just four months later—reflects competitive pressure from OpenAI and Google on agentic performance and pricing. With Sonnet 5 now default across free and Pro plans plus API availability at $3/$15 per million tokens, traders watch for signals on the subsequent release, such as new capability benchmarks, developer conferences, or rival model launches that could compress timelines further. No firm date for a follow-on Sonnet has been announced.
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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