OpenCode and Claude Code Lead September 2026 Power Rankings

OpenCode and Claude Code secured the top positions in the September 2026 developer rankings, capturing massive market share from legacy code-completion extensions. OpenCode ranked #1 due to its MIT-licensed, forkable architecture and multi-model support, while Claude Code demonstrated a 67% blind-review preference for terminal workflows and topped the WebDev Arena benchmark. Software engineering teams are rapidly abandoning inline completion in favor of terminal-first autonomous refactoring agents.