TOTAL VOLUME:

$134.2b

24H VOL:

$126,324,530

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,434,646,834

406,019

Markets across

30,401

events

MATCHED EVENTS:

2,689

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
Dashboards
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All
Science and Technology
Top Text to Speech AI this week
kalshi

Which AI will be top text to speech?

Volume:
$86

Cartesia

 - Kalshi

Cartesia - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 18, 2026

Closed: Sep 18, 10:00 AM EST

kalshi

Kalshi

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

Cartesia

View
100%
Yes 100¢No 0¢
100¢
N/A
$86
N/A
N/A
$86
Settled
Yes
kalshi

Alibaba

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

SpeechifyAI

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

VUI Labs

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

StepFun

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

Inworld

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

Smallest.ai

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

MiniMax

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

ElevenLabs

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

Fish Audio

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

Mistral

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

SpaceXAI

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

OpenAI

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

Google

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

Nvidia

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

Amazon

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

Async

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
Total markets: 17

Description

This event tracks which artificial intelligence model achieves the highest ranking in a specific speech synthesis competition by a set date. The competition evaluates various AI systems based on their performance in generating natural and intelligible speech from text inputs. Participants include major technology firms and specialized AI research organizations.

Kalshi

The event determines the leading text-to-speech AI model as ranked on the Artificial Analysis Speech Arena Leaderboard at precisely 10:00am ET on September 18, 2026. Each market corresponds to a specific AI developer, resolving to 'Yes' only if that developer holds the sole #1 position at the specified time. If multiple models share the top rank, the resolution depends first on the governing league's official tie-breaking procedures. In the absence of such procedures, all tied entities equally share the highest rank. Contracts for tied entities will resolve to $1 divided by the number of tied candidates, rounded down to the nearest cent. Kalshi explicitly disclaims any affiliation with the governing league or ownership of related trademarks and branding elements.

Frequently asked questions

On Kalshi, the dashboard for the Text to Speech AI market tracks the current odds of various outcomes, providing a real-time view of where traders are placing their bets. You can also see the price history, allowing you to analyze how sentiment has shifted over time. The 24-hour volume is displayed, showing how much trading activity has occurred recently. Currently, volume stands at $36 and total volume is $86. This data helps users understand market dynamics and potential trading opportunities related to advancements in text to speech technology.

Comparing prediction market odds to analyst forecasts reveals interesting insights into collective intelligence versus expert opinion. Often, this market demonstrates the ‘wisdom of the crowd’ effect, where the aggregated predictions of many traders can be more accurate than individual expert assessments. While analysts may focus on specific technical details or company announcements, this market reflects a broader range of information and potential influencing factors. Discrepancies can highlight areas where the market perceives risks or opportunities differently than traditional analysis suggests, offering a unique perspective on the future of text to speech AI.

On Kalshi, this market is priced using a continuous double auction, meaning traders buy and sell contracts representing different outcomes. The price of a contract reflects the probability of that outcome occurring, as perceived by the market participants. 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 collective assessment of the event's likelihood. This dynamic pricing mechanism ensures that the market odds are constantly updated based on the latest information and sentiment. Traders can influence the market by placing buy or sell orders, contributing to the overall price discovery process for the leading text to speech AI.

This market resolves around Sep 18, 2026, with the outcome confirmed once the leading text to speech AI is verified against credible public reporting. Resolution will be based on identifying the technology widely considered to be the most advanced and impactful in the field during the specified timeframe. The determination will rely on publicly available data, expert reviews, and industry benchmarks. This ensures a transparent and objective assessment of which text to speech AI has achieved the greatest prominence and capability, as reflected by the collective predictions made within this market.

Several signals or events could significantly move this market before Sep 18, 2026. Major announcements from leading AI companies regarding new text to speech capabilities, breakthroughs in AI research, or significant adoption of a particular technology by major platforms would all likely impact trading activity. Positive or negative press coverage, influential analyst reports, and demonstrations of superior performance in real-world applications could also shift sentiment. Unexpected regulatory changes or shifts in industry trends related to AI development could also influence the market, driving price fluctuations and changing the perceived probabilities of different outcomes.