KalshiTech and scienceTrading

Will Anthropic release Mythos before Dec 1, 2026?: Before Dec 1, 2026

Yes price
—
read on the next check
24h volume
—
contracts, $1 each at most
Ends
Dec 1, 2026
Recorded changes
0
tracked since Oct 31

Yes price and rules edits

Price history from Kalshi's public API. Each numbered marker is an edit; point at it to read it.
Yes price

Resolution

Trading
Closes Dec 1, 2026
Closed
Kalshi determines the result
Determined
Settles after a short timer
Settled
Paid out

Checking the live resolution stage with Kalshi…

Rules history

removedadded
  1. 1
    Version 1, currentsince I first saw it,
    Read the current rules
    Title
    Will Anthropic release Mythos before Dec 1, 2026?
    Outcome
    Before Dec 1, 2026
    Rules

    If Anthropic releases A model called Mythos before Dec 1, 2026, then the market resolves to Yes.

    More rules

    Release must be to the public, outside of a closed beta, though limiting it to a high-cost subscription tier is acceptable.

    Close time
    Dec 1, 2026, 04:59 UTC
    Expiration
    Dec 8, 2026, 15:00 UTC
    Early close

    This market will close and expire early if the event occurs.

  2. 1
    First recordedOct 31, 2026, 09:23 UTC

    Saved in my first snapshot of every open market. Neither venue keeps older versions, so nothing before this exists.

Clarifications posted elsewhere

Kalshi sometimes explains a ruling on X or in support replies without editing the contract. No API carries those. Link one here and everyone watching gets an alert.

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