AI Market Intelligence Daily

1. Anthropic is being repriced as the clear front-runner of the 2026 model race. The Kalshi ladder for "Anthropic market share this week" has collapsed from a spread across several strike levels into near-certainty at the low end, with the Above 2.9% contract jumping 197% (32% to 95%) and the Above 2.6% and Above 2.7% contracts settling at 94% and 97%. The same story shows up on the model-quality side, where "Best AI on Dec 31, 2026?" has Claude holding 44% of the probability against Gemini's 42% and ChatGPT's 9%, even after Claude slipped 7 points over the last few hours. Taken together, the price action says traders now treat Claude as the default incumbent going into year end, with the gap over Google closing rather than opening.

2. The share gains for Anthropic are being financed by OpenAI and, to a lesser extent, Google. Across the OpenAI "market share this week" ladder, contracts above roughly 17% all fell hard, with Above 18.7% down 67% (45% to 15%) and Above 19.8% down 92% (25% to 2%), while the lower thresholds still clear at 97% and 92%. Google's week-share contracts moved the same way, with Above 19.3% down 18% and Above 21.1% down 52%. That is a classic relative-value rotation: money is leaving the OpenAI-and-Google positions and piling into Anthropic rather than new conviction about total demand, which is why the biggest percentage moves in the whole dataset live in the Anthropic share ladder.

3. DeepSeek is having a genuine breakout week, not a data artifact. The DeepSeek "market share this week?" market jumped 273% (15% to 56%) on the Above 24.6% strike, and the higher strikes are catching up behind it, with Above 23.4% up 79% (52% to 93%) while the lower strikes have already resolved at 98%. That front-loading, where the farthest-out strike leads the rest of the ladder, is what a real share jump looks like rather than a single noisy tick. It also fits the broader theme: Chinese open-weight models keep taking usage share, which is the same force that pushed Z.ai's Above 10.8% contract up 50% (36% to 54%) in the same window.

4. The Vercel AI Gateway contracts are the loudest move in the report, but they deserve the least confidence. The two Anthropic request-share contracts surged 733% (3% to 25%) and 560% (5% to 33%), the largest percentage jumps recorded, but the baseline snapshot they are compared against is only about 7 hours old, far shorter than the roughly 24-hour window used for the rest of the table. A three-to-ten-point move in a low-liquidity contract over a single day is entirely plausibly just a few traders, so this should be read as a spike to watch, not a confirmed shift in Anthropic's gateway footprint. The rest of the gateway data is too thin to corroborate it either way.

5. Today's headline news does not explain these moves, and that is the most important read of the day. The top 15 stories are product and business news, led by Nous Research confirming a $1.5B valuation, Microsoft's Nvidia-chip AI PCs, and ChatGPT's new visual interface, none of which map onto the specific markets that swung. That absence of an obvious catalyst, combined with the fact that nearly all 112 of the day's movers are the weekly share and gateway ladders, points to data-driven repricing as the driver: these markets are likely reacting to freshly published usage-share figures that the daily headlines did not surface. When a market moves this hard and the news feed says nothing about it, the information usually lives in the underlying dataset, not in the press.