Very cool launch from the @agentsky_dev team. Agent Playground lets you give Claude Code, Codex, and DeepSeek the identical task in one browser and compare time, cost, and tokens side by side.

I run same-task harness tests constantly, and I think this is one of the first places agents can be compared under truly identical conditions. It's great because you can make a better decision about which agent harness is best for the desired task.