Will SpaceXAI officially rename itself to SpaceXSI by October 15?
Crossbook compares what two exchanges, Polymarket and Kalshi, charge for the same event, and publishes a permanent scored record of its own forecasts under published rules.
Tracked on one venue, with Crossbook's own call on the record.
Bid/ask midpoint · retrieved 2026-10-11T04:20:28.687Z. Venue quote-update time is unavailable. Readings can be asynchronous.
92.5%bid 91.0% / ask 94.0%24h volume $17K · liquidity $3Kas of 11 Oct, 04:20 UTC · not refreshed recentlyView on PolymarketPrice, last 60 days
Crossbook forecast
- 29.5%against a market price of 25.0% at the timeYES
Logged 6 Oct 2026, 22:28 UTC · Brier 0.4970
- The commitment is real but informal: Musk replied 'Yes, we will make that change' to a user on X, which is an expression of intent, not an official corporate renaming action — and the resolution requires an official name change announcement, a higher bar than a social-media reply.
- As of October 5 — one day after the reported commitment — no website or social-account changes had occurred, indicating the operational rollout had not started; executing an official rename (legal entity or corporate branding) in the remaining ~9 days is a compressed timeline.
- Musk-led companies have a track record of announced intentions (including name and branding changes) being delayed, partial, or treated as jokes, which argues for discounting from the base rate for announced renames generally — though the explicit 'we will make that change' wording is genuine signal toward YES and prevents a heavy discount.
- The resolution rule is somewhat forgiving (renaming either SpaceXAI or parent SpaceX to any 'SI'-style qualifying name counts), which slightly raises the chance relative to a narrow single-entity rename requirement.
What would change it: An official announcement, filing, or site-wide rebrand to 'SpaceXSI'/'XSI' appearing on SpaceXAI's website or verified accounts before October 15 would push this to near-certain YES.
Settlement sourcet-0229
Polymarket prices this at 92.5%. No verified equivalent is currently listed on the other venue, so there is no cross venue comparison on this page.
Volume over the last 24 hours is modest, at about $16,620 on the busier venue.
This market has settled. The page is kept as a record of what the market said while the question was open, and of what Crossbook called.
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