TOTAL VOLUME:

$134b

24H VOL:

$103,397,351

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,410,176,180

399,592

Markets across

30,097

events

MATCHED EVENTS:

2,622

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Science and Technology
Open Source market share on Sep 12th
kalshi

What is open source market share?

Volume:
$101

Above 55%

 - Kalshi

Above 55% - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 13, 2026

Closed: Sep 13, 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 55%

View
100%
Yes 100¢No 0¢
100¢
N/A
$101
N/A
N/A
$101
Settled
Yes
kalshi

Above 57.5%

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
kalshi

Above 60%

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
kalshi

Above 62.5%

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
kalshi

Above 65%

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
kalshi

Above 67.5%

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
kalshi

Above 70%

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
kalshi

Above 72.5%

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
kalshi

Above 75%

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 9

Description

This event tracks the adoption of open-source software in AI development by measuring the proportion of open versus closed token usage on a specific platform. It reflects broader trends in software transparency and collaboration within the tech community. The outcome depends on whether this proportion exceeds various thresholds, indicating differing levels of open-source influence.

Kalshi

The event evaluates whether the Open vs. Closed Token Volume (open weights share) for September 12, 2026, exceeds specified percentage thresholds, with resolution based on Vercel AI Gateway's Open vs. Closed Token Volume chart. Kalshi will determine the outcome at 10:00 AM ET on September 13, 2026, using the chart's updated value for the previous day. Each market corresponds to a distinct threshold, ranging from above 55% to above 75%. All markets share the same data source and timing, ensuring consistency across varying threshold evaluations. Kalshi clarifies that it holds no official affiliation with Vercel, and all trademarks remain property of their respective owners.

Frequently asked questions

On Kalshi, the dashboard for the open source market share tracks the current odds of various outcomes related to the percentage of market share held by open source software. You can view the price history, which shows how the perceived probability of each outcome has changed over time, as well as the 24-hour volume, currently at $101. The total volume traded on this market is $101. This allows traders to gauge market sentiment and identify potential trading opportunities related to the future of open source adoption.

Currently, it's important to note that analyst forecasts regarding the open source market share vary considerably. Some predict continued growth, while others anticipate a stabilization or even a slight decline. This market offers a unique perspective, as it reflects the collective wisdom of traders actively putting their capital at risk. Discrepancies between the odds on Kalshi and these external forecasts can highlight areas where the market believes analysts may be over- or underestimating certain factors influencing the open source landscape. It's a real-time assessment of probabilities, distinct from static predictions.

On Kalshi, this market is priced using a continuous double auction mechanism. Traders buy and sell contracts representing different possible outcomes for the open source market share. The price of each contract reflects the probability that outcome will occur, as determined by supply and demand. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders participate, the prices adjust to reflect the evolving collective belief about the future. This dynamic pricing ensures that the market remains responsive to new information and changing sentiment surrounding open source software.

This market resolves around Sep 20, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The final market share of open source software will be determined by data released by reputable market analysis firms specializing in software and technology trends. These reports will be assessed to establish the percentage of the overall software market attributable to open source solutions, thereby determining the winning outcome in this market. Traders will then be settled based on their positions at resolution.

Several signals or events could significantly move this market. Major announcements from leading technology companies regarding their open source strategies, substantial shifts in developer preferences towards or away from open source tools, and the release of key industry reports detailing open source adoption rates are all potential catalysts. Unexpected security vulnerabilities discovered in popular open source projects, or conversely, major advancements in open source security, could also impact trading activity. Regulatory changes affecting software licensing and intellectual property could also influence the open source market share.