OpenAI Agents SDK vs Claude API: Which to Use for Building AI Agents in 2026
This post contains affiliate links. I may earn a commission at no extra cost to you. The two dominant choices for building production AI agents in 2026 are OpenAI’s Agents SDK and Anthropic’s Claude API. Both are capable of powering sophisticated agent systems, but they make different design decisions that matter when you are committing to one for a real project. This is a practical comparison based on building agents with both. I will cover the developer experience, tool-calling behavior, safety characteristics, pricing, and the scenarios where each one pulls ahead. ...