I tried a Claude Code rival that's local, open source, and completely free - how it went

I tried a Claude Code rival that's local, open source, and completely free - how it went ...

GPT-5.3 Codex Raises the Bar, but Opus 4.6 Still Owns Deep Reasoning

In benchmark tests such as Swaybench Pro and Terminal Bench, GPT-5.3 Codex consistently outperformed its predecessors, setting new standards for speed and execution. When compared to Anthropic’s Opus ...