OpenAI Agents SDK
APIs and tools for building AI products
Our Take
OpenAI dropped their Agents SDK and look, it's exactly what you'd expect from the company that basically invented the AI product space — GPT-5.5 handling multi-step workflows autonomously, integrated tool use, and the whole thing is completely free which is honestly a no-brainer for anyone building AI products right now. The 5.0 rating across 738 reviews and 13K followers signals real traction, though at this point OpenAI feels less like the scrappy disruptor and more like the default infrastructure everyone builds on top of— which isn't bad, just means you're not picking them for the excitement, you're picking them because they actually work at scale.
Build and scale AI experiences powered by industry-leading models and tools. GPT-5.5 is OpenAI's most advanced model yet, designed to handle real-world work with greater autonomy, speed, and efficiency. It excels at coding, research, data analysis, and task execution — planning, using tools, and iterating with minimal guidance — making it a powerful partner for complex, multi-step workflows.
Key Facts
The people behind OpenAI Agents SDK
Sam Altman
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