Science and Technology Polymarket August 21, 2026
Anthropic eyes next Mythos-class model release after Claude Fable 5
Next Mythos-Class Model released by…?
Polymarket prices this September 30 at 77%. The reporting broadly agrees.
Anthropic, a leading artificial intelligence research company, is reportedly working on the next generation of its highly advanced AI model, the Mythos-class. Traders put the release at 77%, even though the reporting suggests a focus on improving the current model rather than a full-scale release. The company's previous model, Claude Fable 5, was released on June 9, 2026, and has been making waves in the AI research community. With the release date set for September 30, 2026, the anticipation is building among AI enthusiasts and researchers.
Background
Anthropic has been at the forefront of AI research, and its Mythos-class models have been highly regarded for their capabilities. The company's previous model, Claude Fable 5, was released in June 2026 and has been making progress in various areas, including natural language processing and reasoning. The upcoming release of the next Mythos-class model is expected to bring significant improvements and advancements in AI capabilities.
The precedent
- No AI model has achieved human-level performance in all areas of reasoning and natural language processing.
Context compiled by Crowdtells from the public record — verify before relying on it.
What the coverage agrees on
- Anthropic is working on the next generation of its AI model, the Mythos-class.
- The release date is set for September 30, 2026.
- The company's previous model, Claude Fable 5, was released in June 2026.
How outlets frame it
- TechCrunch: emphasizes the potential advancements in AI capabilities and the focus on improving the current model rather than a full-scale release.
What to watch
The upcoming release of the next Mythos-class model is expected to be a major development in the field of AI research. The release date is set for September 30, 2026, and traders are closely watching the market for any signs of progress or delays.
The numbers behind this
Polymarket prices this September 30 at 77%.
24h -4.0 pts 7d +2.0 pts
$164K traded · $27.6K in the last day · $13.7K resting liquidity · $61.4K open interest
Resolves on: On June 9, 2026, Anthropic released the Mythos-class model Claude Fable 5. This market will resolve to "Yes" if Anthropic releases the next Mythos-class model and makes it available to the general public by the listed date (ET). Otherwise, this market will resolve to "No." Any model whose official name includes “Mythos,” or that Anthropic officially describes as a “Mythos-class” model or similar, will qualify for this market’s resolution. For this market to resolve to "Yes," the qualifying model (as defined above) 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…
Pricing Polymarket 77%
Sources
- Claude Fable 5 Model (Mythos) | First Test Vibe Coding Princess Diana (NB1qMVjI9M) mshale.com
- Anthropic’s Model 2 Beats Mythos 5, But the Public Will Not Get It beincrypto.com
- Anthropic Mythos Release Date Odds: Kalshi Prices 16-17% Before 2027 stokastic.com
- An unreleased Anthropic model made progress on one of math’s biggest unsolved problems techcrunch.com
Frequently asked questions
Next Mythos-Class Model released by…?
Polymarket prices this September 30 at 77%. The reporting broadly agrees.
What do the sources agree on?
Anthropic is working on the next generation of its AI model, the Mythos-class. The release date is set for September 30, 2026. The company's previous model, Claude Fable 5, was released in June 2026.
When does this market resolve?
This market resolves on: On June 9, 2026, Anthropic released the Mythos-class model Claude Fable 5. This market will resolve to "Yes" if Anthropic releases the next Mythos-class model and makes it available to the general public by the listed date (ET). Otherwise, this market will resolve to "No." Any model whose official name includes “Mythos,” or that Anthropic officially describes as a “Mythos-class” model or similar, will qualify for this market’s resolution. For this market to resolve to "Yes," the qualifying model (as defined above) 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…
How are these odds set?
Prediction-market odds are prices set by people trading real money on the outcome, so the price reads as the crowd’s implied probability — not a guarantee or financial advice.
AI-written briefing grounded in 4 sources and the live market, edited by Samuel Jo. Odds are crowd probabilities, not advice — how this works.