⚡ Stop treating intelligence and efficiency as separate. GPT-5.6 maximizes intelligence per token to deliver equal-or-better performance more cheaply and quickly. Title: How GPT-5.6 fuses frontier intelligence with frontier efficiency URL: ⚡ Overview GPT-5.6 is trained to optimize both task success and efficiency, taking a more direct path through tasks. OpenAI calls it their greatest intelligence-per-token efficiency yet. 🧩 Problem Solved Frontier models are smart, but reasoning tokens, latency, and cost are the wall in production. GPT-5.6 makes efficiency a first-class goal, pushing the performance-vs-cost tradeoff outward. 🛠 Methodology & Lineup ・Sol: flagship for frontier reasoning and long-horizon agentic work ・Terra: everyday balanced model, GPT-5.5-competitive at about half the cost ・Luna: fastest and cheapest (~80% less than Sol) On serving: improved speculative decoding gives 15%+ better token generation, and GPU kernel improvements cut serving cost 20%. 📊 Results On the Artificial Analysis Coding Agent Index, Sol (max reasoning) sets a new SOTA of 80, beating Fable 5 by +2.8 while using under half the output tokens, half the time, and ~1/3 less cost. On ExploitBench it matches Mythos Preview using ~1/3 of the output tokens. #GPT56# #OpenAI#

GPT‑6 with Intelligent UI rolls out globally to Plus, Pro, Business, and Enterprise users today and will expand to Free and Go users starting tomorrow. GPT‑6 in ChatGPT is powered by GPT‑6 Sol for Plus, Pro, Business, and Enterprise tiers, and GPT‑6 Luna for Free and Go tiers. Both are tuned for everyday conversation. This update applies to the Chat tab in ChatGPT. The models powering Work and Codex are not changing as part of this release.

GPT6 Astra is pretty good — After a morning of intensive coding. Clear improvements over 5.6 Sol, much better frontend taste, much better engineering rigorous and much much more efficient thinking and answering.

GPT‑6 Astra - “models a house in Blender and turns it into a walkable scene in Unreal Engine 5, helping designers and clients explore the layout and experience the space before it’s built.”

ALERT 🚨🚨OpenAI's latest GPT6.1 Sol Ultrafast is NOT running on Cerebras but is instead running at a low batch size on NVIDIA GPUs. What does this say about Cerebras? Will Cerebras be serving GPT6.1 Sol Ultrafast in the future?

Almost 48 hours with GPT‑6 Sol and Claude Opus 5.5: → Sol on High, no Fast Mode, $200 plan: a full day of heavy use, ~8% of my weekly limit used. → Opus 5.5 on Mid, $20 plan: ~8% of my weekly limit used. I built 4–5 website drafts for potential clients. OpenAI did an incredible job with Sol. Anthropic stepped up too: limit resets, higher usage limits, and serious value from Opus on a $20 plan. At this level, I don’t care much about picking a winner. Let them work together: one builds, the other challenges and improves. That combination is seriously powerful. What do u think?

My new workflow with GPT‑6 Sol + Claude Opus 5.5 for finding local clients: I combined my Local Client Prospector + First Customer Finder skills into one Codex skill. Today I used it to create 4 website demos. → Codex finds local businesses, checks for an official website, and gives me their sources and Instagram profiles. I choose who gets a demo. → Opus 5.5 uses /design to create artboards. I pick one, and Claude Code builds the site. → Sol reviews it and deploys a Vercel preview. → On my Mac, Codex uses computer use to send each business a personalized Instagram message with its preview link. → Four days later, Codex asks if they replied. If I confirm they haven’t, it removes only that preview. The site files stay.This lets me find prospects, make several tailored demos in a day, and reach out without spending hours on every lead. I don’t know which conversation will turn into a client, but now I can keep showing businesses something real instead of just describing what I could build. Here are today’s four demos ↓