Original Euangelion explanatory figure, authored by Codex, 2026-10-28. No third-party image was copied. Factual basis: https://artificialanalysis.ai/articles/gpt-6-1-terra-pushes-the-cost-efficiency-frontier. The composition is a measured comparison or categorical comparison. Preserve title, units, material limitations and accessible description when reusing. Copyright Euangelion.
Horizontal bars on a common $0–$1.50 scale show GPT-5.6 Terra at $1.40 per task and GPT-6.1 Terra at $0.40. These are evaluator task costs, not guaranteed production bills.
Costs use AA’s October 26 v4.3.2 task mix at maximum reasoning effort. The later v5 workload differs.