TOTAL VOLUME:

$154.6b

24H VOL:

$323,326,361

24H TRANSACTIONS:

2,984,640,614

OPEN INTEREST:

$1,969,435,260

419,363

Markets across

40,411

events

MATCHED EVENTS:

4,612

PLATFORM COVERAGE:

5

Polymarket:

37%

VS.

Kalshi:

63%

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Science and Technology
OpenAI market share this week
kalshi

What will OpenAI's market share be?

Volume:
$839,469

Above 18.4%

 - Kalshi

Above 18.4% - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Oct 12, 2026

Closed: Oct 12, 10:00 AM EST

kalshi

Kalshi

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Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Above 18.4%

View
100%
21%
Yes 100¢No 0¢
—
N/A
$204,484
N/A
N/A
$58,914
Settled
Yes
kalshi

Above 18.1%

100%
Yes 100¢No 0¢
—
N/A
$180,483
N/A
N/A
$30,217
Settled
Yes
kalshi

Above 16.5%

100%
Yes 100¢No 0¢
—
N/A
$62,985
N/A
N/A
$25,436
Settled
Yes
kalshi

Above 17.8%

100%
Yes 100¢No 0¢
—
N/A
$61,515
N/A
N/A
$13,039
Settled
Yes
kalshi

Above 17.5%

100%
Yes 100¢No 0¢
—
N/A
$46,366
N/A
N/A
$12,068
Settled
Yes
kalshi

Above 14.1%

100%
Yes 100¢No 0¢
—
N/A
$29,062
N/A
N/A
$13,028
Settled
Yes
kalshi

Above 18.7%

0%
2%
Yes 0¢No 100¢
—
N/A
$183,025
N/A
N/A
$87,818
Settled
No
kalshi

Above 19.8%

0%
Yes 0¢No 100¢
—
N/A
$54,206
N/A
N/A
$29,560
Settled
No
kalshi

Above 21.9%

0%
Yes 0¢No 100¢
—
N/A
$17,343
N/A
N/A
$9,313
Settled
No
Total markets: 9

Intro

This market tracks whether OpenAI will achieve a market share above 16.5% on the OpenRouter text market by model author for the week of October 5, 2026. Currently, the probability of this outcome occurring on Kalshi is 99.0%. The resolution source for this market is based on data from OpenRouter, specifically measuring OpenAI’s text model market share. Traders should watch the OpenRouter data released following the week of October 5, 2026, as this will determine whether OpenAI exceeds the 16.5% threshold needed for a “Yes” resolution.

Kalshi

All markets in this event resolve based on OpenRouter's publicly reported text market share data for model authors during the week of October 5, 2026. Values will be taken from the chart updated at 10:00 AM ET on the Monday following the measurement week and rounded to one decimal place. Each market has a specific threshold (ranging from 14.1% to 21.9%); if OpenAI's reported market share exceeds the respective threshold, that market resolves to Yes. If OpenAI's share is not separately identified—if it appears grouped under a collective category like “Others”—all markets resolve to No. These markets are independent assessments and Kalshi explicitly disclaims any formal association with OpenRouter or any trademarked materials referenced.

Frequently asked questions

On Kalshi, the dashboard for the OpenAI market share market displays the current odds, price history, and 24-hour trading volume. You can see how traders are pricing the likelihood of different outcomes regarding OpenAI’s market share. Currently, the total volume for this market is $839,469, with $125,973 traded in the last 24 hours. This information provides a real-time view of market sentiment and allows you to track how predictions evolve as new information becomes available. The dashboard is updated continuously to reflect the latest trading activity.

Comparing prediction market odds to analyst forecasts reveals how collective intelligence differs from expert opinion. Often, this market demonstrates an ability to synthesize information from a wider range of sources than traditional analysis, potentially leading to more accurate predictions. While analysts may focus on specific factors, the market incorporates diverse perspectives and reacts quickly to new developments. Discrepancies between the two can highlight areas where the market perceives risks or opportunities that analysts may have overlooked, or vice versa, offering a valuable perspective on the potential trajectory of OpenAI’s market share.

On Kalshi, this market is priced through a continuous double auction, where traders buy and sell contracts representing different possible outcomes for OpenAI’s market share. The price of a contract reflects the probability of that outcome occurring, as determined by supply and demand. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Traders are incentivized to set accurate prices, as profitable trades depend on correctly anticipating market movements. This dynamic pricing mechanism ensures that the market reflects the collective wisdom of participants, providing a forward-looking assessment of OpenAI’s position in the market.

This market resolves around Oct 19, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will be based on publicly available data regarding OpenAI’s market share during the specified period. The precise methodology for determining the final market share will be based on industry-standard metrics and reporting practices. Traders will be able to see the final outcome and how it aligns with the predictions made in this market, providing valuable insights into the accuracy of collective forecasting.

Several signals or events could significantly move this market before it resolves. Major announcements from OpenAI regarding new products, partnerships, or financial performance would likely have a substantial impact. Changes in the competitive landscape, such as the emergence of a strong rival or shifts in market demand for AI technologies, could also drive price fluctuations. Regulatory developments or geopolitical events affecting the AI industry are additional catalysts to watch. Furthermore, significant news regarding funding rounds, key personnel changes, or technological breakthroughs within OpenAI could all influence trading activity in this market.