ADVANCING THE PRICE-PERFORMANCE FRONTIER WITH GPT-5.6

Summary from the TLDR Dev newsletter

GPT-5.6 Luna has become cheaper by 80% to $0.20/M input and $1.20/M output. Terra has dropped20% to $2/M and $12/M. Sol is the same, with the cuts also flowing through Codex and ChatGPT Work quotas, and Priority Processing becoming Fast mode: 2.5× faster on Sol at 2× price, same capability, backward compatible with priority tags.