Chris and Alex are talking this week about CodePen’s biggest release since the 2.0 drop. It’s live! We’ll be working on CodePen AI forever, since it’s a fast-changing technology that regularly adds new abilities. That sounds like a trite thing to say, but we lived it as we were building this.

We started out playing with the best and latest open-weight LLMs we could afford through vLLM. Then we did similarly with Amazon Bedrock, trying more models out as we built our own harness. Ultimately, OpenAI’s ChatGPT-6 Luna had such affordable pricing and high quality, and our harness was getting so good, that it made us feel ready to ship.

CodePen AI is an agent-based approach to helping with your Pens. There is a new AI panel where you interact with it. By it, I mean Penny, our mascot and really the brains behind the operation. Ask it to build something, debug some code, optimize something, or even just explain some code or tell you how a particular feature of CodePen works.

Time Jumps