
-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 1480 and 1490?. The market currently shows a live probability of 18%, $447 in 24h volume, and $660.6 in liquidity.
Probability
18%
24h Volume
$447
Liquidity
$660.6
This market is watching the first Arena Leaderboard appearance of a Claude Opus 4.8 model and asking whether its posted Text Arena score lands in a narrow 1480–1490 band. The result depends on the score shown on the leaderboard at a specific time the next day, so the exact model label and the published Score column both matter.
The event is tied to Anthropic’s Claude family, specifically a model newly added to the LMArena text leaderboard and labeled as some version of "Opus 4.8" such as claude-opus-4.8, claude-opus-4.8-thinking, or claude-opus-4.8-preview. The market resolves using the "Score" column in the "Text Arena | Overall" tab at 12:00 PM ET on the calendar day after the model first appears, and the answer is "Yes" only if that score falls between 1480 and 1490, with exact boundary cases rounded to the higher bracket.
There is real uncertainty because new leaderboard entries can vary by model variant, timing, and the score that LMArena publishes after the initial appearance. People watching this market are effectively judging whether the next Opus 4.8 listing will debut strong enough to land in a specific score window, which is a narrower question than simply whether Claude does well on Arena overall.
A fresh leaderboard entry that clearly matches an Opus 4.8 label would be the main driver, especially if the score shown on the public leaderboard is visibly inside or outside the 1480–1490 range. Price can also move if multiple qualifying Opus 4.8 variants appear on the same day, because the rules say the highest-scoring one on that initial date is what counts. Any ambiguity in the naming, such as whether the model is truly tagged as Opus 4.8 rather than Sonnet, Haiku, or another variant, would also matter to traders.
The current market price implies roughly a 18% 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.
Related markets

-3%
24h Vol
$169.4K
Liquidity
$152.5K
Spread
1%
12/31/2027
View marketThe key source of truth is the LMArena text leaderboard page, specifically the "Text Arena | Overall" tab with style control off and the published Score column. Readers should verify the first calendar date the qualifying model appears, then check the score at 12:00 PM ET on the following day, since later additions are excluded. If the model label is unclear or the leaderboard shows multiple Opus 4.8 entries, the market rules require using only the highest-scoring qualifying model from the original appearance date, so that timing and naming detail is essential before resolution.
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 1480 and 1490?. The market currently shows a live probability of 18%, $447 in 24h volume, and $660.6 in liquidity.
Track live technology prediction markets focused on AI, major tech events, product launches, innovation forecasts, and emerging industry trends.
Yes
18%
No
82%
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 18%, 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
$478.1K
Liquidity
$245.2K
Spread
0%
6/30/2026
View market
-0.1%
24h Vol
$30.9K
Liquidity
$309K
Spread
0%
6/30/2026
View market
-0.5%
24h Vol
$21.7K
Liquidity
$29K
Spread
0%
Live
View market
-10%
24h Vol
$16.4K
Liquidity
$16.1K
Spread
1%
12/31/2027
View market
+0.4%
24h Vol
$17.7K
Liquidity
$67.5K
Spread
1%
12/31/2026
View market