Artificial intelligence development has increasingly focused on mathematical reasoning as a key performance indicator. The prediction markets grouped here address a single competitive question: which of four major companies—OpenAI, Anthropic, DeepSeek, or Google—will release the most capable mathematics AI model by April 2026? These markets are interconnected; they track a single race with multiple competitors rather than independent events. Each company pursues distinct technical approaches to mathematical problem-solving, making the outcome genuinely uncertain despite clear differences in their research strategies and public commitments. The market prices you see below represent aggregated trader estimates of success probability for each company. Higher prices indicate greater confidence; lower prices reflect skepticism. The four markets collectively represent a complete accounting of the competitive landscape—only one outcome can occur, though markets may price probabilities that sum above 100% due to how prediction markets operate. What makes these prices informative is the diversity of information traders incorporate: they react to published research papers, benchmark results, product announcements, and other signals about which company is advancing fastest in mathematical capabilities. Price movements often precede major public announcements, suggesting that informed traders incorporate advance intelligence about coming developments. As you track these markets through April 2026, pay particular attention to divergences in pricing between companies; these often reveal where the market consensus sees the clearest competitive advantages. The timeframe is significant because the AI industry is expected to announce major advances in mathematical reasoning capabilities during this period, making these markets exceptionally responsive to breaking developments.