Anthropic released Claude Sonnet 5 on June 30, 2026, as its most agentic mid-tier model yet, with strong gains in coding, tool use, and production workflows at competitive pricing. This followed Sonnet 4.6 in February 2026 and earlier 2025 updates, reflecting a pattern of roughly quarterly-to-biannual Sonnet refreshes that emphasize practical agentic performance over raw scale. Trader sentiment for the next release hinges on Anthropic’s internal cadence, competitive pressure from OpenAI and Google models, and any signals from upcoming developer events or API changes. No official timeline has been confirmed for a Sonnet 6 or equivalent, leaving room for shifts based on capability milestones or regulatory factors.
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...?
August 31
5%
October 31
55%
December 31
84%
$4,134 Vol.
August 31
5%
October 31
55%
December 31
84%
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: Jul 1, 2026, 6:46 PM ET
Resolver
0x65070BE91...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.
Resolver
0x65070BE91...Anthropic released Claude Sonnet 5 on June 30, 2026, as its most agentic mid-tier model yet, with strong gains in coding, tool use, and production workflows at competitive pricing. This followed Sonnet 4.6 in February 2026 and earlier 2025 updates, reflecting a pattern of roughly quarterly-to-biannual Sonnet refreshes that emphasize practical agentic performance over raw scale. Trader sentiment for the next release hinges on Anthropic’s internal cadence, competitive pressure from OpenAI and Google models, and any signals from upcoming developer events or API changes. No official timeline has been confirmed for a Sonnet 6 or equivalent, leaving room for shifts based on capability milestones or regulatory factors.
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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