Same task in github-copilot, pi, claude-code, and opencode with Qwen3.6 27B

In three linesEmpirical comparison of four coding agent harnesses (GitHub Copilot, Pi, Claude Code, OpenCode) with Qwen 3.6 27B on identical tasks. Qwen excels with Claude Code and OpenCode (4 requests to create pelican.svg) but struggles with GitHub Copilot (13 requests). OpenCode provides internet search and interactive widget generation.

Summary generated by Claude — human-verified