Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) Pick polygram.ink (preferred broker) |
18% | 82% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
18% | 82% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 200-219 | 18% |
| 220-239 | 18% |
| 180-199 | 16% |
| 140-159 | 11% |
| 240-259 | 11% |
| 160-179 | 9% |
| 260-279 | 7% |
| 120-139 | 5% |
| 100-119 | 4% |
| 80-99 | 3% |
| 280-299 | 3% |
| 300-319 | 1% |
| 320-339 | 1% |
| 340-359 | 1% |
| <20 | 0% |
| 20-39 | 0% |
| 40-59 | 0% |
| 60-79 | 0% |
| 360-379 | 0% |
| 380-399 | 0% |
| 400-419 | 0% |
| 420-439 | 0% |
| 440-459 | 0% |
| 460-479 | 0% |
| 480-499 | 0% |
| 500+ | 0% |
Market context
Elon Musk is set to post on X between 12:00 PM ET on 10 July and 12:00 PM ET on 17 July 2026, with the market currently assigning a 0% chance to any specific tweet-count outcome. Historical tracking from June 2026 shows Musk averages roughly 34 posts per weekday and 24 on weekends, projecting an expected total near 252 posts across the eight-day window [1]. Recent activity confirms this cadence: he posted 40 times on 4 July and 33 times on 5 July, reinforcing a high-frequency baseline that has persisted through court testimony and product announcements in earlier months [4][5][7].
Traders should monitor SpaceX launch schedules and Tesla-related developments, as Musk’s posting spikes often correlate with major corporate milestones or public controversies. The upcoming Transporter rideshare mission, targeting a launch from California with 81 payloads, is a likely catalyst for elevated activity [9]. Analyst consensus, based on his established daily pace, suggests the 0% implied probability is a significant divergence from the real-world expectation of over 200 posts, making the current market pricing appear misaligned with his verified posting behaviour [1]. Real-time X feed counts during the settlement window will be the primary driver of resolution.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
Trade Elon Musk # tweets July 10 - July 17, 2026? on Best Prediction Markets
Live order book, 0% fees, USDC settlement in seconds.
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