{"_meta":{"attribution":"Data aggregated by pdata.world (https://pdata.world) from 8 prediction-market venues; CC BY 4.0; source data © each venue.","canonical_url":"https://pdata.world/events/kalshi/KXLLMH2H-26DEC31METAOPEN","as_of":"2026-10-13T06:35:56.186391Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"Meta vs OpenAI: Highest Arena Score at the end of 2026\" — \"Meta\" leads at 72% across 2 outcomes as of 2026-10-13 UTC. https://pdata.world/events/kalshi/KXLLMH2H-26DEC31METAOPEN","source_url":"https://kalshi.com/markets/kxllmh2h/meta-vs-openai-highest-arena-score-at-the-end-of-2026/kxllmh2h-26dec31metaopen"},"source":"kalshi","id":"KXLLMH2H-26DEC31METAOPEN","ticker":"KXLLMH2H-26DEC31METAOPEN","slug":"KXLLMH2H-26DEC31METAOPEN","title":"Meta vs OpenAI: Highest Arena Score at the end of 2026","description":null,"image":null,"icon":null,"active":true,"closed":false,"start_date":"2026-10-12T20:00:00Z","end_date":"2027-01-07T15:00:00Z","closed_time":null,"volume":2542.32,"volume_24hr":2542.32,"volume_24h_change":null,"normalized_vol_24hr":17.079734802246094,"normalized_volume":16.532726287841797,"liquidity":null,"open_interest":2410.66,"categories":["Science and Technology"],"tags":[],"synthetic":false,"is_group":false,"group_key":"26DEC31METAOPEN","parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Meta","top_outcome_probability":0.72,"top_outcome_prob_24h_change":0.72,"top_outcome_volume_24h_change":2542.32,"updated_at":"2026-10-13T03:14:15.531026Z","fetched_at":"2026-10-13T03:14:15.531026Z","added_at":"2026-10-12T20:05:55.114189Z","url":"https://kalshi.com/markets/kxllmh2h/meta-vs-openai-highest-arena-score-at-the-end-of-2026/kxllmh2h-26dec31metaopen","chart_24h":[0.0,2542.32],"kind":"live","mutually_exclusive":true,"markets_total":2,"markets":[{"source":"kalshi","id":"KXLLMH2H-26DEC31METAOPEN-META","event_id":"KXLLMH2H-26DEC31METAOPEN","slug":"KXLLMH2H-26DEC31METAOPEN-META","question":"Will Meta have a higher Arena Score than OpenAI at the end of 2026?","group_item_title":"Meta","description":"If Meta's top model has a higher Arena Score than OpenAI's top model on the LM Arena text leaderboard on Dec 31, 2026 at 10:00 AM ET, then the market resolves to Yes.\n\n---\n\nEach company's top model is its highest-ranked model in the Overall category of the leaderboard, with style control removed (Adjustments: None). A model belongs to the company the leaderboard lists as its organization. Preliminary models count.\n\nIf the two top models show the same Arena Score, the one ranked higher on the leaderboard wins.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.72,0.28],"probability":0.72,"spread":0.040000000000000036,"active":true,"closed":false,"start_date":"2026-10-12T20:00:00Z","end_date":"2027-01-07T15:00:00Z","closed_time":"2026-12-31T15:00:00Z","result":null,"volume":2542.32,"volume_24hr":2542.32,"prob_24h_change":0.72,"volume_24h_change":2542.32,"normalized_vol_24hr":19.32405662536621,"normalized_volume":19.140235900878906,"liquidity":null,"categories":["Science and Technology"],"countries":[],"updated_at":"2026-10-13T03:44:55.131704Z","fetched_at":"2026-10-13T03:44:55.131704Z","added_at":"2026-10-12T20:05:55.334519Z","url":"https://kalshi.com/markets/kxllmh2h/meta-vs-openai-highest-arena-score-at-the-end-of-2026/kxllmh2h-26dec31metaopen","event_title":"Meta vs OpenAI: Highest Arena Score at the end of 2026","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.72,0.72]},{"source":"kalshi","id":"KXLLMH2H-26DEC31METAOPEN-OPEN","event_id":"KXLLMH2H-26DEC31METAOPEN","slug":"KXLLMH2H-26DEC31METAOPEN-OPEN","question":"Will OpenAI have a higher Arena Score than Meta at the end of 2026?","group_item_title":"OpenAI","description":"If OpenAI's top model has a higher Arena Score than Meta's top model on the LM Arena text leaderboard on Dec 31, 2026 at 10:00 AM ET, then the market resolves to Yes.\n\n---\n\nEach company's top model is its highest-ranked model in the Overall category of the leaderboard, with style control removed (Adjustments: None). A model belongs to the company the leaderboard lists as its organization. Preliminary models count.\n\nIf the two top models show the same Arena Score, the one ranked higher on the leaderboard wins.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.02999999999999997,"active":true,"closed":false,"start_date":"2026-10-12T20:00:00Z","end_date":"2027-01-07T15:00:00Z","closed_time":"2026-12-31T15:00:00Z","result":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.0,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Science and Technology"],"countries":[],"updated_at":"2026-10-13T05:58:30.341277Z","fetched_at":"2026-10-13T05:58:30.341277Z","added_at":"2026-10-12T20:05:55.334519Z","url":"https://kalshi.com/markets/kxllmh2h/meta-vs-openai-highest-arena-score-at-the-end-of-2026/kxllmh2h-26dec31metaopen","event_title":"Meta vs OpenAI: Highest Arena Score at the end of 2026","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0]}]}