b⁴ vs Kalshi: opinion markets vs event contracts

Kalshi is a CFTC-regulated exchange for event contracts. You buy yes or no on real-world outcomes — economic data, weather, sports, politics — and each contract settles against the source named in its rules, such as an official data release or a league result. Trading requires a verified account, and availability depends on where you live.

b⁴ is an opinion market. It asks subjective questions that have no external answer, and each market settles on what the majority of its voters believe at close, within 24 hours; the nightly board resolves live on B Feud at 9 PM ET. Stakes start at $1 in USDC on Solana, the app is non-custodial, and one device holds one wallet and one vote.

Side by side

b⁴ and Kalshi compared on resolution source, time to resolve, surface, who it’s for, and live show
Featureb⁴Opinion marketKalshiRegulated event contracts
Resolution source

The crowd

Majority vote at close. No outside event, data feed, or oracle.

Real-world outcome

Checked against the source agency named in each contract’s rules.

Time to resolve

Within 24 hours

The nightly board resolves live at 9 PM ET.

Hours to months

After the outcome is known.

Surface

iOS and Android

Mobile-only. USDC on Solana.

Web, iOS, and Android

Who it’s for

Anyone with a take

Stakes from $1. One device, one wallet, one vote.

Verified traders, 18+

In supported regions, hedging or speculating on real-world events.

Live show

Yes

B Feud, every night at 9 PM ET.

No

Sources: kalshi.com, Kalshi help center. Checked October 2026. Products change; check Kalshi’s site for current details.

Try b⁴ tonight.

Stake from $1 on the day’s board, then watch it resolve live on B Feud at 9 PM ET.

Download on the App StoreGet it on Google Play

iOS and Android. USDC on Solana.

Questions

Is b4 a prediction market?
No. b⁴ is an opinion market. Prediction markets settle on whether a real-world event happens, checked against an oracle or a data source. b⁴ questions are subjective, so each market settles on what the majority of its voters believe when it closes — the crowd is the oracle. Markets close within 24 hours, and the nightly board resolves live on B Feud.
How does B Feud work?
B Feud is b⁴’s live show, every night at 9 PM ET. During the day you stake on the board’s questions in the app. At showtime, host Barry brings each question to the room: you get 20 seconds to call the side and guess what share of the room picked YES, then the room’s answer is revealed and the market resolves. You score for calling the right side and for how close your guess lands, and top scorers can win a share of the night’s prize pool. You can watch and play in the b⁴ app on iOS and Android.
b4 vs Polymarket: what’s the difference?
Polymarket is a prediction market: it settles on real-world outcomes using each market’s stated resolution source, usually through UMA’s optimistic oracle, on timelines from minutes to months. b⁴ is an opinion market: it settles on the majority of its own voters at close, within 24 hours, and the nightly board resolves live on B Feud. b⁴ is mobile-only, with stakes from $1 in USDC on Solana.
b4 vs Kalshi: what’s the difference?
Kalshi is a CFTC-regulated exchange for event contracts. You buy yes or no on real-world outcomes — economic data, weather, sports, politics — and each contract settles against the source named in its rules, such as an official data release or a league result. Trading requires a verified account, and availability depends on where you live. b⁴ is an opinion market. It asks subjective questions that have no external answer, and each market settles on what the majority of its voters believe at close, within 24 hours; the nightly board resolves live on B Feud at 9 PM ET. Stakes start at $1 in USDC on Solana, the app is non-custodial, and one device holds one wallet and one vote.

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