According to DeepLearning.AI, Anthropic’s new flagship Claude Opus 4.5 improves coding, tool use, and long-context reasoning while costing about one-third per token versus its predecessor, directly lowering unit inference costs relative to earlier Claude models (source: DeepLearning.AI on X, Dec 16, 2025; more details: hubs.la/Q03Yf3f60). It adds adjustable effort and extended thinking plus automatic long-chat summarization, features designed to manage reasoning depth and summarize lengthy interactions at lower token consumption than before (source: DeepLearning.AI on X, Dec 16, 2025). Independent benchmarks cited by DeepLearning.AI place Opus 4.5 near the top, and it often achieves comparable results with far fewer tokens, improving cost efficiency for long-context tasks compared with its predecessor (source: DeepLearning.AI on X, Dec 16, 2025).