
+0.5%
SpaceX IPO closing market cap above $3T?
24h Vol
$77.2K
Liquidity
$144.1K
Spread
2%
12/31/2027
View marketTechnology
Polymarket market
Track live probability, outcome prices, volume, liquidity, and resolution details for Will a Claude Mythos model be released by July 31, 2026?. The market currently shows a live probability of 80%, $20.7K in 24h volume, and $19.3K in liquidity.
Probability
80%
24h Volume
$20.7K
Liquidity
$19.3K
This market asks whether Anthropic will publicly release a model called Claude Mythos, or another model Anthropic confirms is the one exposed in the March 26, 2026 leak, by July 31, 2026. It is worth watching because the market is tied to a specific unreleased AI system, not just any new Claude update, and the resolution depends on how Anthropic labels and makes it available.
The event is about a rumored Anthropic model named Claude Mythos, which was described in a leak as a major step up in coding, reasoning, and cybersecurity. For a Yes outcome, the model must be released to the general public by the deadline in Eastern Time, and it must be either explicitly named Claude Mythos or clearly confirmed as the leaked model by Anthropic or broad credible reporting. Products named Claude Haiku, Sonnet, Opus 4.7, 5.0, or similar do not count unless they are confirmed to be the same model.
There is uncertainty around both timing and product identity. Anthropic has reportedly acknowledged early access testing, but that does not guarantee a public launch before July 31, and the market also has to decide whether a future release is close enough to the leaked model to qualify. That makes the question less about whether Anthropic is working on something new and more about whether the specific Mythos release arrives publicly on time.
A formal Anthropic announcement naming Claude Mythos would be the clearest Yes signal, especially if it includes open beta access, public signups, or another form of public availability. Price could also move if Anthropic launches a differently named model and credible reporting or the company itself confirms it is the same leaked system, because the resolution rules allow that to count. By contrast, news of private testing, closed beta access, or unrelated Claude releases would matter only if they change expectations about a public Mythos launch before the deadline.
Related markets

+0.5%
24h Vol
$77.2K
Liquidity
$144.1K
Spread
2%
12/31/2027
View marketThe current market price implies roughly a 80% chance for the leading outcome, based on live Polymarket pricing. That number is not a prediction from PredictionNinja and it is not a guarantee; it is the current crowd-priced view of the market and can change quickly when new information appears.
Readers should watch for the exact product name, the access level, and whether the model is actually public rather than invite-only or internal. The resolution source is the market’s stated criteria, with Anthropic statements and consensus credible reporting used to identify whether a released model is the leaked Claude Mythos. The deadline is July 31, 2026 at 00:00 UTC in the market data, and the main ambiguity is whether a new Claude release is explicitly tied to the leaked model or is simply another model family update.
Track live probability, outcome prices, volume, liquidity, and resolution details for Will a Claude Mythos model be released by July 31, 2026?. The market currently shows a live probability of 80%, $20.7K in 24h volume, and $19.3K in liquidity.
Track live technology prediction markets focused on AI, major tech events, product launches, innovation forecasts, and emerging industry trends.
Yes
80%
No
20%
This market is currently listed with an end date of Jul 31, 2026. Market timelines can change if the underlying event is postponed, rescheduled, or resolved early.
A data leak on March 26, 2026, exposed Anthropic's unreleased "Claude Mythos" model, described as their most capable yet with significant advances in coding, reasoning, and cybersecurity, which the company has confirmed is now in early access testing. You can read more about that here: https://fortune.com/2026/03/26/anthropic-says-testing-mythos-powerful-new-ai-model-after-data-leak-reveals-its-existence-step-change-in-capabilities/. This market will resolve to "Yes" if Anthropic releases "Claude Mythos" or a model confirmed to be the same model referenced in the leak described above, and that model is made available to the general public by the listed date (ET). Otherwise, this market will resolve to "No." A qualifying model must be named "Claude Mythos" (e.g., Claude Mythos 1, Claude Mythos 5, Claude Mythos X, would count) or be confirmed to be the same model referenced in the leak by Anthropic or by a consensus of credible reporting. Products labeled as Claude Haiku, Sonnet, and Opus 4.7/5.0 or similar will not count for this market's resolution unless they are confirmed to be the same model referenced in the leak. 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 must be clearly defined and publicly announced by Anthropic as being accessible to the general public. If a qualifying model is made publicly accessible and labeled with the relevant version name within the company’s official website, this will qualify as “publicly announced”. 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 under the rules will not qualify. The primary resolution source for this market will be official information from Anthropic; however, a consensus of credible reporting will also be used.
Probability signal
The current price implies a strong favorite, so new information would need to be meaningful to move the market sharply.
Liquidity context
Liquidity is relatively deep for a prediction market page, so quoted prices may be more reliable than very thin markets.
Spread
The bid-ask spread is tight, which usually points to a more actively priced market.
Recent movement
The 24h move is notable, so recent news or market activity may have changed trader expectations.
The current displayed probability is 80%, based on the latest normalized Polymarket data available to PredictionNinja.
The rules and resolution criteria are pulled from the market description provided by Polymarket when available.
Prediction markets can move whenever traders react to new information, liquidity changes, injuries, announcements, news, or other event-specific developments.
No. PredictionNinja displays market data and context for research only. It is not financial, legal, betting, or investment advice.

--
24h Vol
$86.9K
Liquidity
$238.8K
Spread
0%
6/30/2026
View market
--
24h Vol
$803.2K
Liquidity
$319.8K
Spread
0%
6/30/2026
View market
-25%
24h Vol
$10.3K
Liquidity
$7.5K
Spread
3%
6/30/2026
View market
+1.5%
24h Vol
$17K
Liquidity
$6.7K
Spread
1%
Live
View market
+1.5%
24h Vol
$24.7K
Liquidity
$51.3K
Spread
0%
12/31/2027
View market