Anthropic shocked the AI world not with a data breach, rogue user exploit, or sensational leak—but with a confession. Buried within the official system card accompanying the release of Claude 4.0, the company revealed that their most advanced model to date had,

Bowman later edited his tweet and the following one in a thread to read as follows, but it still didn't convince the naysayers.

Anthropic's Claude 4 models show particular strength in coding and reasoning tasks, but lag behind in multimodality and context window size compared to Google and OpenAI offerings.

Claude Opus 4 is the world’s best coding model, Anthropic said. The company also released a safety report for the hybrid reasoning models.

Learn how Claude 4’s advanced AI features make it a game-changer in writing, data analysis, and human-AI collaboration. Anthropic's Claude 4

Anthropic's Claude Opus 4 outperforms OpenAI's GPT-4.1 with unprecedented seven-hour autonomous coding sessions and record-breaking 72.5% SWE-bench score, transforming AI from quick-response tool to day-long collaborator.