Curated tech Twitter/X posts on AI, startups, and product development—signal without the doomscroll, updated on weekdays.
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Wild. Three years apart, same company. GPT-4 (Mar 2023) GPT-6 Astra (Sep 2026) GPT-4 → $30/$60 per MTok GPT-6 Astra → $10/$50 per MTok Context window: GPT-4: 8K tokens GPT-6 Astra: 1.05M tokens (~128x bigger)