AI knowledge graph

Before and after

1. Sep 4GPT-6 Astra: adds two cheaper tiers below Astra
2. Sep 22OpenAI Monorepo Hack: Both mention OpenAI and AI Coding Agents
3. Sep 22Claude Opus 5.5: arrived 90 minutes after Opus 5.5
4. Sep 23GPT-6 Sol & Luna
5. Sep 26GPT-6 Cyber: the only launches during a two-week freeze
6. Sep 29Claude Sonnet 5.5: the same list price as GPT-6 Sol
7. Sep 29GPT-6.1 Sol: an upgrade a week after GPT-6 Sol