GPT-6 Sol vs GPT-6 Luna vs Claude Opus 5.5: Which Model Should You Actually Use for Agentic Workflows? (2026)
On September 22, 2026, anyone managing an agentic pipeline faced an unusually concrete decision: three significant model releases dropped within the same afternoon. OpenAI posted GPT-6 Sol and GPT-6 Luna at 18:12 UTC, 89 minutes after Anthropic released Claude Opus 5.5. For AI enthusiasts running real workflows, that timing turned a routine model comparison into … Read more