Java Architect Essentials

Oct 31, 2026 · Industry Insights

Why GPT-6.1 Sol Is Missing from Codex: 3-Step Access Check

This guide explains why GPT-6.1 Sol may not appear in Codex despite an active subscription, covering model location in the Work/Codex view, how login method (ChatGPT vs API key) determines billing, and a troubleshooting sequence checking subscription status, workspace permissions, and app version.