According to @DeepLearningAI, researchers from Mila, Microsoft, and academic partners proposed Delethink, a reinforcement learning method that trains language models to periodically truncate their chain-of-thought to manage long-context reasoning more efficiently, source: @DeepLearningAI, Twitter, Jan 17, 2026. The post adds that Delethink reduces the cost of long-context reasoning and improves performance, a combination that directly highlights lower inference cost and higher throughput for LLM workflows, source: @DeepLearningAI, Twitter, Jan 17, 2026.