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Curated tech posts from X on AI, startups, and product development—signal without the doomscroll, updated on weekdays.
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I've been testing GPT-6 Sol for a bit now. It's solid, but I still prefer Astra/Fable 5.1 (and now, likely Opus 5.5) for my day to day. We're spoiled by so many amazing model options now!
Please welcome GPT-6 Sol and GPT-6 Luna to the GPT-6 universe. GPT-6 Sol and Luna build on the advances behind GPT-6 Astra, bringing much of its strengths into faster and more affordable models to support work at scale. We’ve also made caching and inference more efficient, and we’re passing the savings directly to you: 50% lower API prices for Sol and Luna compared with GPT‑5.6 promotional pricing.