Chat Completions API

A developer compares the OpenAI and Anthropic APIs for production SaaS features, arguing that API design—not model benchmarks—determines long-term maintainability and cost. The analysis highlights dif…

OpenAI updated its API to allow reasoning models like GPT-5.5 and GPT-5.6 to retain reasoning context across conversation turns, improving performance on complex multi-step tasks. The new feature, ava…