SOL Ultra is used in this channel's material as a term drawn from the GPT-5.6 SOL discussion — the session in which the Every. team explores the newly merged ChatGPT + Codex desktop app and calls GPT-5.6 SOL the gold standard for knowledge work. In that captured material, the term belongs to the SOL model family being compared and vibe-checked: the team explores the delegate-and-review workflow, weighs how SOL models excel at knowledge work, writing, design, and coding, and contrasts them against other releases. SOL Ultra surfaces as a related term within that model-comparison session, so it should be explored in the context of the channel's broader chapter on AI model vibe checks and comparisons — hands-on testing rather than leaderboard readings.