---
title: "Meta vs OpenAI: Highest Arena Score at the end of 2026 — On Dec 31, 2026"
canonical_url: https://betcrypto.now/events/meta-vs-openai-highest-arena-score-at-the-end-of-2026-on-dec-31-2026
status: live
kickoff_at: 2026-12-31T00:00:00+00:00
trading_closes_at: 2026-12-31T15:00:00+00:00
total_volume_usd: 13940
venues: ["Kalshi"]
categories: ["Tech & Science"]
prices_as_of: 2026-11-07T04:27:52+00:00
publisher: BetCrypto
data_api: https://betcrypto.now/api/v1/events/meta-vs-openai-highest-arena-score-at-the-end-of-2026-on-dec-31-2026
---

# Meta vs OpenAI: Highest Arena Score at the end of 2026 — On Dec 31, 2026

Live · kickoff 2026-12-31 00:00 UTC · $13,940 traded · listed on Kalshi

## About

Each 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.

If the two top models show the same Arena Score, the one ranked higher on the leaderboard wins.

_From Kalshi's listing._

## Main market

| Outcome | Probability | Cheapest | Kalshi |
|---|---|---|---|
| Meta | 84% | 87¢ on Kalshi | 87¢ |
| OpenAI | 17% | 19¢ on Kalshi | 19¢ |

## Open on a venue

- [Kalshi](https://betcrypto.now/go/e/821615?via=md)

---

Probability is the cross-venue consensus (book midpoints, 0–100%). Venue columns are what buying costs there (the ask). Prices move constantly; re-check at the canonical URL or the [JSON API](https://betcrypto.now/api/v1/events/meta-vs-openai-highest-arena-score-at-the-end-of-2026-on-dec-31-2026).

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