Part of a mutually exclusive multi-outcome group (Polymarket neg-risk)
Part of event: Which company has best AI model end of August? · which-company-has-best-ai-model-end-of-august-20260717015626546
Market structure and 24h change as reported by Polymarket's public API.
Top of book
Best ask
0.001
Spread
0.001
As reported by Polymarket's public API at 07:01 UTC; top of book, not full depth; per-side depth not shown. The spread is shown against the midpoint of the two quotes above, which is arithmetic on the venue's figures, not a figure the venue reports.
Volume
24h volume
$30,000
Total volume
$41,524
Volume as reported by Polymarket's public API.
Resolution rules
Rules as stated by Polymarket, reproduced verbatim. Convexly has not independently reviewed them and does not endorse them; the rating's resolution-reliability pillar treats rule text as present but not independently reviewed.
This market will resolve according to the company which owns the model which has the highest arena rank based on the arena.ai Text Arena (Overall) when the table under the "Leaderboard" tab is checked on August 31, 2026, 12:00 PM ET. Results from the "Rank" column under the "Text Arena | Overall" Leaderboard tab at https://arena.ai/leaderboard/text/overall-no-style-control with style control off (Adjustments: None) and filtered for "Models" will be used to resolve this market. Models will be ordered primarily by their leaderboard rank at the market’s check time. If two or more models are tied on rank, they will be ordered by their Arena score, including any underlying, unrounded, granular values reflected in the data below the leaderboard. If a tie still remains, alphabetical order of company names as listed in this market group will be used as a final tiebreaker (e.g., if the two models are tied by exact arena score, “Google” would be ranked ahead of “SpaceXAI”). This market will resolve based on the company that occupies first place under this ranking. The resolution source for this market is the arena.ai Text Arena (Overall). If this resolution source is unavailable at check time, this market will remain open until the leaderboard comes back online and will resolve based on the first check after it becomes available. If it becomes permanently unavailable, this market will resolve to "Other".Show the full rules textHide the full rules text
This market will resolve according to the company which owns the model which has the highest arena rank based on the arena.ai Text Arena (Overall) when the table under the "Leaderboard" tab is checked on August 31, 2026, 12:00 PM ET. Results from the "Rank" column under the "Text Arena | Overall" Leaderboard tab at https://arena.ai/leaderboard/text/overall-no-style-control with style control off (Adjustments: None) and filtered for "Models" will be used to resolve this market. Models will be ordered primarily by their leaderboard rank at the market’s check time. If two or more models are tied on rank, they will be ordered by their Arena score, including any underlying, unrounded, granular values reflected in the data below the leaderboard. If a tie still remains, alphabetical order of company names as listed in this market group will be used as a final tiebreaker (e.g., if the two models are tied by exact arena score, “Google” would be ranked ahead of “SpaceXAI”). This market will resolve based on the company that occupies first place under this ranking. The resolution source for this market is the arena.ai Text Arena (Overall). If this resolution source is unavailable at check time, this market will remain open until the leaderboard comes back online and will resolve based on the first check after it becomes available. If it becomes permanently unavailable, this market will resolve to "Other".
Resolution mechanics
Resolution parameters as stated by Polymarket.
- Resolved by (UMA adapter)
- 0x69c47De9D4D3Dad79590d61b9e05918E03775f24
- Proposer bond
- $500 proposer bond
- Proposer reward
- $5 proposer reward
- Stated resolution source
- https://arena.ai/leaderboard/text/overall-no-style-control
Market Trust diagnostic · v0.2 candidate
Will Microsoft have the best AI model at the end of August 2026?
This market is not in the v0.1 daily card set yet. The v0.2 diagnostic scorecard below shows the per-pillar contribution from the latest materializer run, with visible caveats and evidence-status separation.
Why this rating
Why this rating
Composite 55 · Do not cite
Measurement certainty
Low
1 measured · 2 modeled · 3 not assessed
Certainty reflects how much of this market we measured, not how good the market is.
- CoherenceModeled estimatefixed rules, not a per-market measurementweight 25.0
No full-provenance CME signal is linked to this condition in the current ledger window; absence of a signal is not proof of coherence.
- · no linked cme signal in window
- · absence of signal not proof of coherence
- · cme signal window days: 7
- · recent full provenance signals: 22
50+25.0 - ExecutabilityNot assessednot yet measured for this marketweight 20.0
Executability scored as worse-of(spread, depth) from a single orderbook snapshot; the two were merged from the former liquidity + depth pillars to stop double-counting one correlated source.
- · executability worse of spread depth
- · spread: one_sided_orderbook_boundary
- · spread: direct_bid_ask_spread_missing
- · spread: visible $1k ladder slippage 2.46pp
40not assessed - Resolution reliabilityModeled estimatefixed rules, not a per-market measurementweight 20.0
Resolution source and rule text are present but not independently reviewed.
- · resolution metadata present manual review pending
70+28.0 - Participant flowNot assessednot yet measured for this marketweight 20.0
No participant flow rollup materialized yet.
- · participant flow pending
not assessednot assessed - Integrity-risk screenNot assessednot yet measured for this marketweight 10.0
No participant concentration rollup materialized yet.
- · missing input
not assessednot assessed - Audit completenessMeasuredweight 5.0
3 linked artifacts; 1 missing hashes; 0 stale/failing sources.
- · artifact hash missing
- · source watermarks healthy
85+8.5
How it adds up: composite = Σ(score × weight) / Σ(weight) across measured + heuristic pillars only. Pending and data-rights-blocked pillars are excluded from both numerator and denominator. Total contributing weight = 50.0.
Caveat: 3 pillars not assessed yet; the score will recompute as the substrate fills in.
Structural coherence read
The Coherent Markets Engine checks this market's pricing for structural inconsistencies against related markets. Whether a current signal exists, and its construction, is included with Researcher.
See ResearcherMarket opened 2026-07-17 · minimum order size 5 shares · price tick size 0.001 · as stated by Polymarket.