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Baycurrent Classic: Top 20 Finishers Jacob Bridgeman 95% ▲+44Mariano Navone vs Pablo Carreno Busta: Set 1 Winner Pablo Carreno Busta 89% ▲+42NLCS MVP Winner William Contreras 43% ▲+40Critics Choice Awards: Best Foreign Language Film La Bola Negra 12% ▼−40ALCS MVP Winner Miguel Vargas 45% ▲+40Steam: Weekly Top Seller STAR WARS: Galactic Racer™ 35% ▼−38Charlton vs Ryan Ziegann Sam Ryan Ziegann 71% ▲+38Hoole vs Sach Casey Hoole 92% ▲+35RED Canids vs. FlyQuest FlyQuest 84% ▲+34Will SpaceXAI officially rename itself to SpaceXSI… October 31 62% ▲+28Who will Trump publicly praise by October 31? Elon Musk 93% ▲+28OpenRouter token usage in Oct 5–11 Above 166 T tokens 42% ▲+27Nobel Prize in Literature: 2026 Can Xue 16% ▼−23Meta's Watermelon released on...? No release by October 31 46% ▲+23
PolymarketCloses October 31, 2026

Second-best Code Arena WebDev AI Lab end of October?

OpenAI leads at 75% (about 7 in ten) on Polymarket, as of Oct 8, 07:34 UTC. It's down 1.5 points in the last 24 hours.

OpenAI 75% ▼ 1.5 pts · 24h

The odds

as of Oct 8, 07:34 UTC
  • OpenAI 75% −1.5
  • Anthropic 12% −6
  • Google 2.9% —
  • Alibaba 1.8% —
  • Z.ai 1.8% —
  • Moonshot 1.2% —
  • SpaceXAI <1% —
  • Meta <1% —
Traded today$741
Traded in all$35K
Favourite, 7 days−5 pts

OpenAI, the last 7 days

Polymarket price
25%50%75%Sep 30Oct 875%

Oct 1: 80% · Oct 2: 81% · Oct 3: 77% · Oct 4: 77% · Oct 5: 77% · Oct 6: 76% · Oct 7: 76% · Oct 8: 75%

How it resolves

Polymarket's rule, word for word
This market will resolve according to the second-highest ranked Company based on the arena.ai Code Arena | WebDev Leaderboard when the table under "Code Arena | WebDev" filtered for "Labs" is checked on October 31, 2026, 12:00 PM ET. Results from the "Lab Rank" column under the "Code Arena | WebDev" Leaderboard tab at https://arena.ai/leaderboard/code/webdev?rankBy=labs (Overall) filtered for "Labs" will be used to resolve this market. Note: Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score. AI companies will be ordered primarily by their Lab Rank at the market’s check time. If the results based on the lab ranking are ambiguous or unavailable, the relevant AI companies will be ordered according to their highest-ranking AI model in the leaderboard’s “Models” view. If two or more models are tied on rank, they will be ordered by which model is listed higher on the leaderboard. If a tie still remains, alphabetical order of AI lab/company names as listed in this market group will be used as a final tiebreaker (e.g., “Google” would be ranked ahead of “SpaceXAI”). This market will resolve based on the company that occupies second place under this ranking. The resolution source for this market is the arena.ai Code Arena | WebDev Leaderboard. If this resolution source is unavailable at check time, this market will remain open until the leaderboard comes back online and will resolve based on the first check after it becomes available. If it becomes permanently unavailable, this market will resolve to "Other".
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