Anthropic’s rapid iteration on its Opus line, including the July 24 release of Claude Opus 5 as a cost-effective flagship for coding and agentic workflows, has traders focused on the timing of the next major Opus update. The company’s pattern of incremental Opus refreshes—such as Opus 4.8 in May—combined with the early September launch of higher-tier Fable 5.1 and Mythos 5.1 models, points to continued pressure to match competitors like OpenAI’s GPT series and Google’s Gemini on benchmarks for reasoning, tool use, and long-context performance. Market-implied odds reflect expectations of a release in the coming weeks, driven by Anthropic’s cadence of official announcements and developer platform updates rather than leaks alone. Key catalysts ahead include any earnings commentary or new capability previews that could shift the competitive positioning of the Opus tier.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$104,235 Vol.
September 30
74%
October 31
99%
December 31
98%
$104,235 Vol.
September 30
74%
October 31
99%
December 31
98%
Claude Opus refers to a model by Anthropic explicitly named Opus. Qualifying models include Claude Opus 5.1, Claude Opus 5.5, Opus 6, or any other Opus variants. Models under any other name, such as Sonnet, Haiku, Fable, or Mythos, will not qualify, unless the model is explicitly and officially named Opus 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: Aug 17, 2026, 11:04 AM ET
Resolver
0x65070BE91...Claude Opus refers to a model by Anthropic explicitly named Opus. Qualifying models include Claude Opus 5.1, Claude Opus 5.5, Opus 6, or any other Opus variants. Models under any other name, such as Sonnet, Haiku, Fable, or Mythos, will not qualify, unless the model is explicitly and officially named Opus 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’s rapid iteration on its Opus line, including the July 24 release of Claude Opus 5 as a cost-effective flagship for coding and agentic workflows, has traders focused on the timing of the next major Opus update. The company’s pattern of incremental Opus refreshes—such as Opus 4.8 in May—combined with the early September launch of higher-tier Fable 5.1 and Mythos 5.1 models, points to continued pressure to match competitors like OpenAI’s GPT series and Google’s Gemini on benchmarks for reasoning, tool use, and long-context performance. Market-implied odds reflect expectations of a release in the coming weeks, driven by Anthropic’s cadence of official announcements and developer platform updates rather than leaks alone. Key catalysts ahead include any earnings commentary or new capability previews that could shift the competitive positioning of the Opus tier.
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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