Top AI model in August — claude-opus-5-max
kalshi · open the market ↗ · closes 2026-08-31T14:00 · claim page
Was there ever a window?
Unknown. None.
- Price reached near-certainty: not recorded — we hold no price history for this contract, which is itself the reason the question cannot be answered
- Earliest cited source published: undated
- Price as shown: not current. The residual below is from the last sweep and may have closed since.
What the contract requires
No criteria were extracted for this contract.
This venue published no resolution text for this contract, so the condition above is inferred from the question alone.
What the sources establish
No source from the named authority (Chatbot Arena/LMSYS) shows claude-opus-5-max ranked first with the Remove Style Control toggle on August 31, 2026 at 10:00 AM ET, and the deadline has not yet arrived. The closest evidence concerns a different leaderboard (Artificial Analysis), which does not satisfy the contract's authority requirement.
The named authority has not established this. The sources below report the event; the contract resolves on what its named source says.
Sources it was read from
8 retrieved but not cited
Adjudicated 44d ago. This is a reading of retrieved documents by a language model, not a settlement. The venue's named authority is the only thing that resolves a market, and it is often slower than the news.