Model Evolution and Tool Comparisons

Opus 5 default, comparisons with Codex, Copilot, Kimi Code, Qwen3.6 Plus, OpenCode. Claude Code leads developer satisfaction at 46%. Supabase open-source benchmark. Cost and rate-limit engineering guides. Migration guides (Claude Code to Codex). New diagnostic guide and cost-awareness articles. OpenCode surpasses Claude Code in GitHub stars, signaling community momentum shift.