#Openai

What's the difference between GPT-5.6 Sol, Terra and Luna? Same generation, three tiers: Sol is the agentic top end ($5/$30 per 1M tokens), Terra is the middle ground ($2/$12) and Luna is the cheap, fast one ($0.20/$1.20). With the pricing in effect since the July 30 cut, here's when each one is worth it and when Sol is just wasted budget.

Claude Code or Codex? The answer comes with numbers: Codex opens a 13-point lead on Terminal-Bench (82.7% vs 69.4%) and Claude Code opens a 10-point lead on SWE-bench Pro (69.2% vs 58.6%), which is the benchmark for real multi-file problems. On SWE-bench Verified they tie. Here is the verdict by scenario, the real cost per dev, and the criterion that matters more than quality: how much control you want during the task.