Yes price
—
read on the next check
24h volume
—
contracts, $1 each at most
Ends
Dec 31, 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 31, 2026
Closed
Kalshi determines the result
Determined
Settles after a short timer
Settled
Paid out
Checking the live resolution stage with Kalshi…
Rules history
- 1Version 1, currentsince I first saw it,
Read the current rules
- Title
- Best AI on Dec 31, 2026?
- Outcome
- Claude
- Rules
If Anthropic has the top-ranked LLM on Dec 31, 2026, then the market resolves to Yes.
- More rules
If two models are tied under Rank (UB), then the model with the highest Arena Score will win. If two models are still tied after that, then the model with the most votes will win. If two models are still tied after that, the model that was released earlier will win. Important information: When checking the source for this market, check the 'Remove Style Control' toggle.
- Close time
- Dec 31, 2026, 15:00 UTC
- Expiration
- Jan 31, 2027, 15:00 UTC
- Early close
allowed
- 1First 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.
No links added.