A developer's handbook for GPT-5.6
GPT-5.6, OpenAI's latest flagship model, is changing how startups build AI agents. By deliberately routing requests across reasoning effort levels and using the Responses API, teams cut costs and late…
Developer Guide
A Practical Guide to Creating Strong Evaluations for AI Agents
A practical guide for developers building AI agents, explaining why agent evaluation is harder than single LLM call testing. It covers the three failure layers—reasoning, action, and execution—how to …