SimpleFunctions

Anthropic · Which company has the best Math AI model end of May

Anthropic is priced at 16¢ on Polymarket. Current book: 15¢ bid, 17¢ ask, 2¢ spread. This outcome ranks #2 of 15 inside Which company has the best Math AI model end of May?.

Price history

16¢ current

55¢
0¢25¢50¢75¢
May 18, 2026May 28, 2026

Contract brief

This market will resolve according to the company that owns the model that has the highest arena rank based on the Chatbot Arena LLM Leaderboard (https://lmarena.ai/) when the table under the "Leaderboard" tab for "Math" is checked on May 31, 2026, 12:00 PM ET. Results from the "Rank" column under the "Text Arena | Math" Leaderboard tab at https://arena.ai/leaderboard/text/math-no-style-control with style control off will be used to resolve this market. Models will be ordered primarily by their leaderboard rank at the market’s check time. If two or more models are tied on rank, they will be ordered by their Arena score, including any underlying, unrounded, granular values reflected in the data below the leaderboard. If a tie still remains, alphabetical order of company names as listed in this market group will be used as a final tiebreaker (e.g., if the two models are tied by exact arena score, “Google” would be ranked ahead of “xAI”). This market will resolve based on the company that occupies first place under this ranking. The resolution source for this market is the Chatbot Arena LLM Leaderboard found at https://lmarena.ai/. 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 based on another resolution source.

Outcome

Anthropic

Rank

#2 of 15

Leader

Google 91¢

Range

0¢-91¢

Family volume

$413K

Identifier

0xf5eed5d4...7995

May 28, 2026, 6:08 PM UTC · 0m ago

Implied probability

16¢
Latest venue quote
May 28, 2026, 6:08 PM UTC · 0m ago

Bid

15¢

Ask

17¢

Spread

24h volume

$68K

Family rank

#2 of 15

15 outcomes · Which company has the best Math AI model end of May?

Closes

May 31, 2026

Family volume

$413K

Orderbook snapshot

15 / 17¢

Polymarket
2¢ spread
BidSize
15¢1
14¢363
13¢600
12¢1.3K
11¢200
10¢105
8¢386
6¢10
AskSize
17¢299
18¢1.2K
19¢331
20¢517
21¢655
22¢317
23¢417
24¢417

Contract terms

What resolves this market.

YES condition

This market will resolve according to the company that owns the model that has the highest arena rank based on the Chatbot Arena LLM Leaderboard (https://lmarena.ai/) when the table under the "Leaderboard" tab for "Math" is checked on May 31, 2026, 12:00 PM ET. Results from the "Rank" column under the "Text Arena | Math" Leaderboard tab at https://arena.ai/leaderboard/text/math-no-style-control with style control off will be used to resolve this market. Models will be ordered primarily by their leaderboard rank at the market’s check time. If two or more models are tied on rank, they will be ordered by their Arena score, including any underlying, unrounded, granular values reflected in the data below the leaderboard. If a tie still remains, alphabetical order of company names as listed in this market group will be used as a final tiebreaker (e.g., if the two models are tied by exact arena score, “Google” would be ranked ahead of “xAI”). This market will resolve based on the company that occupies first place under this ranking. The resolution source for this market is the Chatbot Arena LLM Leaderboard found at https://lmarena.ai/. 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 based on another resolution source.

Venue

Polymarket

Closes

May 31, 2026

Identifier

0xf5eed5d4…7995

SF Signal
SF Index
72730.00
Regime
neutral

Event family

Which company has the best Math AI model end of May.

The same race as a probability stack: rank, volume, and where this contract sits against the other outcomes.

Total volume

$413K

Outcomes

15

Highest price

Google 91¢

Current share

31%

OutcomePriceVolume24hDepth

Google

polymarket · 0xb45bcc8c4580c1c015f6e17c5bd13e2fa31c27920cafe3ddbf59b4b5fbd526f2

91¢
$85K$38K0.0

Anthropic

polymarket · 0xf5eed5d402c85807bede0e4b9169173e48c5ba42879da524cc03ad35092c7995

11¢
$127K$79K0.3

OpenAI

polymarket · 0xb833e3aba09dc39808c66bbac2ddea4345d0d44b6d9595f35b549f51aaf40a5d

0¢
$57K$18K

Alibaba

polymarket · 0xfcd7d9e6a602041813f2f56c467f174959d0068c22f6147e122a941ad30fdbc6

0¢
$27K$7K

xAI

polymarket · 0x195640b227530d45ec159b0645310bcbd4659f8c23009ec7ecd23fdb434aa44b

0¢
$17K$0

Baidu

polymarket · 0xc3e00fab310b79b397823f987eb4ab0496c25cbcbbc3b5e4ec66eb3a1d24a8b9

0¢
$17K$0

Moonshot

polymarket · 0xb08cb465b8edd44c08c5c66193a4b37366d9a5c5eb27188a5cb4c8a6082769b0

0¢
$15K$0

Z.ai

polymarket · 0xa40e927b4adb3ad4c73c02b4f164658ebd3d57be14d57dcc2fd468811dbf09db

0¢
$14K$11

DeepSeek

polymarket · 0xf0a628bb898828c183e1e378075457c8ed2563b3b50803851cfe947318820df5

0¢
$12K$0

ByteDance

polymarket · 0x0b278cab227996b9b3275551a858e85c648e5d9a0ddc767a5af2688ca58857f7

0¢
$12K$0

Meta

polymarket · 0xa7a944727c0d1a45e6b3b8afd7b39e9ac1f8e6d9ac453903cf9e0622b3be29a3

0¢
$12K$11

Mistral

polymarket · 0xffaad2035d665d2e9682dc1452a6f48bc580b6f7c34de27286329a5fe5d5795e

0¢
$9K$0

Amazon

polymarket · 0x54b0a235bcce3a030828a9d9133fef93143347f8a0e4316bc343342b1138a5ae

0¢
$3K$0

Meituan

polymarket · 0xa5d9e160d91440a62fdbb5d3009de19d1f5ead4c7a13e48e949b4585ad0b5b33

0¢
$3K$0

Microsoft

polymarket · 0x465bf31114d5b992cafbc0b7b5f2dab6aefba9d214d1cf945ddee5f17b0d582f

0¢
$2K$0

Indicators

Yield, cliff risk, volatility, and regime.

CRI

8

VR

1.33

IAR

1.4/h

LAS

0.27

Regime

neutral

Score

0.5

Full indicator table

8
VR
1.33
IAR
1.4/h
LAS
0.27

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How we compute these odds

SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.

For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.

Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.