Elon Musk endorsed a viral post predicting that major U.S. artificial intelligence labs will reach artificial general intelligence (AGI), or broadly capable machine intelligence, in 2027. His one-word response, "Accurate," drew 1.8 million views in about three hours. The post said Anthropic's Claude Opus 5.5 already appeared close to AGI and predicted that Google, OpenAI, SpaceXAI and other labs would follow. Prediction markets remain less confident: Kalshi traders put OpenAI's odds of announcing AGI before 2028 at roughly 44.3%, while Polymarket gave it an 18% chance before 2027 and Kalshi 14.8%. The forecast follows a month of competing AGI claims involving OpenAI's GPT-6 Astra, Nvidia CEO Jensen Huang and Musk's prediction that AGI will arrive with Grok 5. OpenAI chief scientist Jakub Pachocki said no lab had solved alignment and monitoring well enough, while Jerome Glenn warned that uncontrolled AGI could enable weapons proliferation and autonomous weapons. Turing Award winner Yann LeCun separately argued that autoregressive large language models alone will not reach human-level AI.