Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legal in California) Pick polygram.ink (preferred broker) |
49% | 51% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
49% | 51% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Go to the live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Go to the live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Go to the live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Go to the live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 49% | |
| Anthropic | 43% |
| OpenAI | 2% |
| Alibaba | 0% |
| Z.ai | 0% |
| xAI | 0% |
| DeepSeek | 0% |
| Moonshot | 0% |
| Mistral | 0% |
| Meituan | 0% |
| Microsoft | 0% |
| Meta | 0% |
| Amazon | 0% |
| Baidu | 0% |
| ByteDance | 0% |
| Company A | 0% |
| Company B | 0% |
| Company C | 0% |
| Company D | 0% |
| Company E | 0% |
| Company F | 0% |
| Company G | 0% |
| Company H | 0% |
| Company I | 0% |
| Company K | 0% |
| Other | 0% |
Market context
The market resolves on which company owns the top-ranked mathematical AI model by late July 2026, determined strictly by the Chatbot Arena LLM Leaderboard’s “Text Arena | Math” table. Current crowd pricing implies a 50% chance for the leading contender, reflecting intense uncertainty as Anthropic’s claude-opus-4-6-thinking currently holds the highest Math Elo at 1518, while Google and others remain within striking distance [3].
Historical precedent shows Math Elo is the fastest-improving category, gaining +172 points since tracking began and averaging rapid monthly gains that can flip leadership within weeks [3]. A similar June market saw Google secure 100% of the outcome, but that was before Anthropic’s recent dominance in reasoning tasks, suggesting the 50% probability captures a genuine contest rather than a foregone conclusion [1].
Traders must monitor Anthropic’s release schedule for claude-fable-5 updates and Google’s next-generation model announcements, as both could alter the leaderboard before settlement [2][4]. Regulatory clarity remains critical: German GlüStV implications and US CFTC reach define the legal perimeter, while the “no-KYC up to $1,500” threshold ensures this market remains accessible to UK and EU participants without identity verification hurdles, provided they stay within the limit.
Methodology
This overview of Which company has the best Math AI model end of July? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
FAQ
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Is Kalshi Legal in California has a different geo footprint.
- How are winnings taxed?
- Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.
- Are prediction markets gambling?
- Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
- Is there a withdrawal cap?
- No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Is Kalshi Legal in California would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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