
-3%
SpaceX IPO closing market cap above $3T?
24h Vol
$169.4K
Liquidity
$152.5K
Spread
1%
12/31/2027
View marketTechnology
Polymarket market
Track live probability, outcome prices, volume, liquidity, and resolution details for Will the next Claude Opus 4.8 model added to the Arena Leaderboard debut at a score between 1510 and 1520?. The market currently shows a live probability of 5%, $1.1K in 24h volume, and $1.4K in liquidity.
Probability
5%
24h Volume
$1.1K
Liquidity
$1.4K
This market asks a very specific question about Anthropic’s Claude Opus 4.8: when the next qualifying version first appears on the Arena.AI text leaderboard, will its score land in the 1510–1520 band? Because the resolution depends on a single leaderboard entry at a fixed time the next day, small differences in the posted score can decide the outcome. The market is currently tilted toward No, which suggests traders expect the debut score to fall outside that bracket.
The event is the first appearance of a newly added Claude model labeled as Opus 4.8 on the Arena.AI / lmarena.ai Text Arena overall leaderboard. Resolution uses the leaderboard’s published Score column at 12:00 PM ET on the calendar day after that first appearance, and only models explicitly labeled Opus 4.8 qualify, including variants such as claude-opus-4.8, claude-opus-4.8-thinking, or claude-opus-4.8-preview. If the score is exactly on a bracket boundary, the higher bracket counts, so a score of 1520 would resolve into the next band rather than this one.
Leaderboard debuts for major AI models often draw attention because they can shape how people compare model families, capabilities, and product positioning. Here, the uncertainty is not just whether Claude Opus 4.8 shows up, but what exact score the leaderboard assigns at the designated time and whether that score lands in one narrow 10-point range. Readers watching this market are effectively asking how the model will land on a public benchmark-style ranking the first time it is listed under the right name.
The main price mover is the actual first listing of a qualifying Claude Opus 4.8 model on the Text Arena leaderboard and the score shown there at the required checkpoint time. Any update that clarifies the exact model name, whether multiple Opus 4.8 variants were added the same day, or whether the posted score sits near 1510 or 1520 can matter a lot because the market resolves from that single score column. Changes to model labeling, delays in leaderboard publication, or the appearance of a different Claude variant such as Sonnet or Haiku would not count for this market, and that distinction can quickly push the market away from Yes.
Related markets

-3%
24h Vol
$169.4K
Liquidity
$152.5K
Spread
1%
12/31/2027
View marketThe current market price implies roughly a 5% 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.
Before this resolves, the key things to verify are the model name, the first calendar date it appears on the Arena.AI text leaderboard, and the Score value shown at 12:00 PM ET the following day. The rules say to use the Text Arena | Overall tab with style control off, and to rely only on the published Score column rather than any more granular or rounded information elsewhere on the page. If more than one qualifying Opus 4.8 model is added on the same date, the highest-scoring one is used; if the model appears a day later, it does not count. The market page does not list an end date, so the practical cutoff is the leaderboard snapshot tied to the qualifying debut date.
Track live probability, outcome prices, volume, liquidity, and resolution details for Will the next Claude Opus 4.8 model added to the Arena Leaderboard debut at a score between 1510 and 1520?. The market currently shows a live probability of 5%, $1.1K in 24h volume, and $1.4K in liquidity.
Track live technology prediction markets focused on AI, major tech events, product launches, innovation forecasts, and emerging industry trends.
Yes
4.5%
No
95.5%
Polymarket has not provided a clear end date for this market yet.
This market will resolve according to the score the next Claude Opus 4.8 model added to the Arena.AI Leaderboard (arena.ai/leaderboard/text) has at 12:00 PM ET on the calendar date following the date on which it first appears on the leaderboard. Otherwise, this market will resolve to "No". If the relevant score falls exactly between two brackets, this market will resolve to the higher bracket. Any Claude model newly added to the leaderboard and labeled as "Opus 4.8" may qualify (e.g., claude-opus-4.8, claude-opus-4.8-thinking, claude-opus-4.8-preview, or similar). Claude models labeled only as Sonnet, Haiku, or another non-Opus 4.8 variant will not qualify. Results from the "Score" column under the "Text Arena | Overall" Leaderboard tab at https://lmarena.ai/leaderboard/text with style control off will be used to resolve this market. This market will resolve solely based on the specified score in the Score column of the leaderboard, regardless of any underlying granular or unrounded data presented elsewhere. If multiple qualifying models are added to the leaderboard on the same calendar date (ET), the highest-scoring model will be used for resolution. Models added to the leaderboard on the calendar date following the initial qualifying model’s first appearance will not be considered. A qualifying model must be newly added to the Arena.AI Leaderboard. Whether the model was previously released, publicly accessible, in beta, or otherwise available before appearing on the leaderboard is irrelevant for this market. The resolution source for this market is the Chatbot Arena LLM Leaderboard found at arena.ai/leaderboard/text. If this resolution source is unavailable at 12:00 PM ET on the calendar date following the date on which the qualifying model first appears on the leaderboard, this market will resolve based on the first subsequent instance at which such a score becomes available on the leaderboard. If it remains unavailable through the end of the seventh day after the qualifying model first appears on the leaderboard or if no qualifying model release occurs by June 30, 2026, 11:59 PM ET, this market will resolve to the lowest bracket.
Probability signal
The current price implies a lower-probability outcome, which can make the market more sensitive to surprise news.
Liquidity context
Liquidity is present but not especially deep, so spreads and order-book movement still matter.
Spread
The bid-ask spread is wider, so the headline probability may be less precise than it looks.
Recent movement
The 24h move is notable, so recent news or market activity may have changed trader expectations.
The current displayed probability is 5%, 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.

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