Anthropic Launches Claude 4.5 Opus for Autonomous Agent Teams Anthropic has officially launched Claude 4.5 Opus on October 9, 2026, marking the frontier research lab's most capable foundation model to date. Engineered specifically for complex autonomous problem-solving and multi-step systems engineering, Claude 4.5 Opus introduces native multi-agent orchestration, dynamic tool synthesis, and a 500,000-token context window with perfect factual recall. The release sets immediate performance...