Introducing Claude Opus 5.5, the first model in our new Claude 5.5 family. It performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5. https://t.co/Q9C2VKQ79f
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…
GPT-6 Sol and Luna are out. Not only are they a very significant improvement across the board, but also in writing and general "you know when you try it" quality. We are also permanently reducing the API price by 50% making both of them viable for a ton of new usecases and mak…
One more thing: we’re increasing five-hour usage limits on Pro, Max, and Team plans. We’re also providing subscription users a rate limit reset, which you can save and use whenever you choose.
GPT-6 Sol and Luna just landed in Astra’s orbit. Both launch today with API prices 50% lower than GPT-5.6. Build with Sol. Scale with Luna. To production and beyond. https://t.co/ZCEFp4JdjV
People outside the AI labs should have a real say in how this technology develops, and a clear way to judge if it's happening safely. Standards should help prevent the concentration of power, including by making sure new companies and open-model companies can compete. They sho…
Introducing The Horowitz Andreessen Academy. https://t.co/5dOqrVRmuf
BTW we now support multiple accounts in the Claude mobile app https://t.co/3ki7LSgAoT
opus 5.5 = personality of opus 4.6 that we all *desperately* wanted back + the intelligence & taste of fable 5.1. and a 25% usage bump! i honestly don’t really see a reason to use another model right now? s-tier release.
Opus 5.5 is here! 🎉 It's honestly such a nice model to work with. Feels like Fable, but ~30% faster and ~40% cheaper per task than Opus 5. Go try it out! https://t.co/zwo83sbgez
🚰 SYSTEM PROMPT LEAK 🚰 Here's the full system prompt for Claude Opus-5.5!! The total count of everything extracted, including all tools, comes in at over 1.9M characters! 🤯 Lots to dig into here. Enjoy! 🫡 Link: https://t.co/GzISdXkbYq gg https://t.co/1G9epIcTxP
I asked Opus 5.5 to make a game inspired by the discovery of the first computer, the Antikythera mechanism. Everything you see and hear is procedurally generated in real time, from code by Opus 5.5. It's a single 3 MB HTML file. Playable Claude artifact below. https://t.co/S0N…
As part of our efforts to pace the frontier, we’re committed to supporting independent assessments with deep levels of access across training, evaluation, and deployment. That access should enable third party assessors to challenge our assumptions, identify risks we may have mi…
I now type "use big pictures and few words" several times a day
Meet Husky: a Model-Specific Inference (MSI) engine up to 4.5× faster than Apple's MLX Woof, Underdog's Pareto frontier model, now runs up to 730 tokens/sec on a MacBook Finally local models are as fast & capable. Try it now in https://t.co/hAWKvlClUC - your personal priva…
I asked Opus 5.5 to try a bunch of redesigns of my personal website using my MAX sub, using workflows to iterate and critique. I was really pleased with how it hit the tone I was looking for. Then I asked it to make a trailer with all of its iterations. https://t.co/NLDxQDAQRk
Put together some notes on Jev and the new category of system one aka decision models https://t.co/EQZvszIXQ9
how to improve GPT-6 Astra / Codex's ability to design and code websites I've been using this approach since GPT Image was released, and the results have kept improving with 2 and 2.5 the idea is to have Codex generate visual mockups of the website before building it, whether …
I was invited to test Opus 5.5. The differences at the high end are hard to notice unless you're being ambitious. They reward ambition though. If you can't tell the difference here, or if you're intentionally micro-prompting a model, I think the fast models (composer, Gemini …
I asked people: "which data companies should an ambitious future founder join?" 13 votes: Mercor (@BrendanFoody @adarsh_exe @suryamidha) 11 votes: Fleet (@nicoup @andrewthezhou) 10 votes: Proximal (@MatternJustus @navidkpr @calvinchen) 9 votes: Surge (@echen) 8 votes: After…
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