Sep 25, 2026Sep 25, 2026 · 7 min readIntroducing GPT-6 Sol and Luna: What OpenAI's Cheaper Tier Means for BuildersOpenAI halves API pricing for GPT-6 Sol and Luna, improves caching and alignment, and gets outpaced within 90 minutes by Anthropic's Opus 5.5 price cut.7 min read
