According to DeepLearning.AI, Anthropic has released Claude Sonnet 4.5, introducing a variable reasoning-token budget and supporting larger input contexts ranging from 200,000 up to 1 million tokens. This update demonstrates improved performance on multiple coding and reasoning benchmarks, making it attractive for enterprise AI applications and complex coding workflows. The model is available for free online and via API at competitive rates of $3 per million input tokens and $15 per million output tokens (source: DeepLearning.AI, 2025-10-14). Anthropic also launched a Claude Agent SDK and updated Claude Code with features like automatic context tracking and summarization, a persistent memory tool, checkpoints for safe rollbacks, and a Visual Studio Code compatible IDE extension. These enhancements offer developers robust tools for building scalable, context-aware AI agents, significantly improving workflow automation and enterprise software development (source: DeepLearning.AI, 2025-10-14).