Meta’s release of Muse Wonder on October 12, 2026, the model long tracked internally as Watermelon, has sharply shifted trader sentiment toward near-term resolution on Polymarket contracts. The launch followed months of internal updates from Chief AI Officer Alexandr Wang, who in July highlighted Watermelon’s parity with GPT-5.5 on Meta benchmarks after an order-of-magnitude increase in compute over the prior Muse Spark series. Official availability through the Meta Model API and Muse Code, plus claims of frontier-level agentic and coding performance matching OpenAI and Anthropic models, confirmed the codename mapping reported by CNBC and others. Heavy prior investment in Meta Superintelligence Labs, including the Scale AI acquisition, underpins the competitive positioning. Traders are now focused on any follow-on checkpoints, pricing tiers, or open-weight decisions that could affect remaining deadline contracts.