Vanaxity insights tagged OpenAI model comparison - notes on AI content, SEO, GEO and AEO from Van Data Team.
GPT-6 Astra is OpenAI's new frontier model and GPT-5.6 Sol is the model it replaces, but on the independent Artificial Analysis Intelligence Index the two tie at 61 while Astra costs 2.5x more, so the upgrade only pays off for specialized work like agentic computer use, long-context retrieval, and hard math or coding, not everyday marketing content where Sol is the better value.
