Claude Opus 5.5 and OpenAI GPT-6 Sol & Luna both launch today with lower costs

AI builders may soon have cheaper flagship options from both major model providers. According to 9to5Google, Anthropic is launching Claude Opus 5.5 while OpenAI is introducing two GPT-6 variants, Sol and Luna, with the announcements arriving roughly an hour apart. All three models are reportedly launching today with lower costs. The available summary does not include pricing, benchmark results, context limits, API availability, or details on how Sol and Luna differ. Those omissions make it impossible to assess the practical gains or total deployment costs yet. Teams should wait for official model cards and API documentation before changing production workloads, paying particular attention to token pricing, latency, tool use, rate limits, and migration requirements.