OpenAI shuts down the Assistants API on August 26, 2026. Here is exactly what breaks, and how to migrate your assistants, threads, and vector stores to the Responses API, with code.
A practical breakdown of Claude and GPT-4o for product teams in 2026, covering coding performance, writing quality, API pricing, and which model fits which use case.
After building production apps with both Claude Opus 4 and GPT-5.5/5.4, here's what actually matters for application development in 2026. Real benchmarks, not marketing.