Tag: claude-opus

Technical comparison of Claude Opus 4.6 and GPT-5.3-Codex: real benchmarks, cost analysis, recommended use cases, and practical tests to choose the right model.

Anthropic used 16 parallel instances of Claude Opus 4.6 to build a 100,000-line C compiler in Rust. $20,000, 2 weeks, compiles Linux. Technical analysis of how it worked, what we learned, and what it means for software development.