According to DeFi Rate prediction market data, Anthropic extended its lead on the AI model leaderboard last week with back-to-back releases: Claude Opus 4.7 on April 16, which pushed the company to the top of the Artificial Analysis Intelligence Index at 57, and Claude Design a day later, an AI design tool that sent Figma, Adobe, Wix, and GoDaddy shares down 2-4% on the news. xAI shipped Grok 4.3 Beta to SuperGrok Heavy subscribers the same week but without Arena-level impact. Polymarket now prices Anthropic at 100.0% to hold the best LLM spot through April 30, with $0 in cumulative volume on the April market. The cross-platform odds for "Best AI Model by Company" market aggregates live probability blended from Kalshi and Polymarket, with data updated every 30 minutes. The aggregated outcome for claude-opus-4-6-thinking shows 100.0% with $0 volume, while all other listed models and companies, including Alibaba, Amazon, Baidu, ByteDance, DeepSeek, Google, Meituan, Mistral, Moonshot, OpenAI, xAI, and Z.ai, show 0.0% with $0 volume.