Claude Opus 4.6 Just Changed AI Coding

A hands-on demo of Claude Opus 4.6 (with 1 million token context) being used to implement a prompt history feature in a real React Native production app called Inkigo. The author walks through the full workflow using Claude Code CLI, covering planning, code generation, testing on a real device, and creating a pull request. Key observations include the model's ability to follow existing codebase patterns, handle complex UI elements like liquid glass effects and Expo UI form sheets, and maintain context across a large codebase. The total cost for the feature was $3 via the API, which the author considers somewhat high.