Marco Marti
3.3K posts

Marco Marti
@marcodelic256
AI, building, Markets & Sound Founder | @FeelClearme


In the last four Claude Code CLI releases, we’ve shipped 50+ stability and performance fixes. Faster resume, stable auth, lower memory, fewer hangs: 🧵


GPT-5.5 by @OpenAI is now live in the Arena, landing across multiple leaderboards. Here’s how it ranks by modality: - Code Arena (agentic web dev): #9, a strong +50pt jump over GPT-5.4 - Document Arena (analysis & long-content reasoning): #6, on par with Sonnet 4.6 - Text Arena: #7, Math #3, Instruction Following: #8 - Expert Arena: #5 - Search Arena: #2 - Vision Arena: #5 Strong, well-rounded performance, especially in Code (+50 pts vs GPT-5.4). Congrats to @OpenAI on the release. Full category breakdowns by modality in the thread.

🚀 DeepSeek-V4 Preview is officially live & open-sourced! Welcome to the era of cost-effective 1M context length. 🔹 DeepSeek-V4-Pro: 1.6T total / 49B active params. Performance rivaling the world's top closed-source models. 🔹 DeepSeek-V4-Flash: 284B total / 13B active params. Your fast, efficient, and economical choice. Try it now at chat.deepseek.com via Expert Mode / Instant Mode. API is updated & available today! 📄 Tech Report: huggingface.co/deepseek-ai/De… 🤗 Open Weights: huggingface.co/collections/de… 1/n

With GPT-5.5, Codex now gets more of the job done across the browser, files, docs, and your computer. We've expanded browser use so Codex can interact with web apps, and test flows, click through pages, capture screenshots, and iterate on what it sees until it completes the task.




When you're brainstorming on something that is really important and complex with different files, reports, data and so on, a really good prompt that I found for Opus or GPT 5.4 XHigh is to say : now spawn a sub-agent, brief him on what you did and ask it to: review your work; propose a different angle; challenge you; propose fixes if needed.




👋 Is there a specific issue you're hitting? If so, would you mind running /feedback and sharing the id here? That would be most helpful for debugging. There were a number of harness changes that may have caused this, all of which are fixed in the latest (last known issue was fixed in 2.1.116 today). We will be sharing more in a bit, and have also shared a few updated on X/Threads as we've been investigating. General tips: 1. Use Opus 4.7 + xhigh/max effort 2. Make sure you're using the latest version of Claude Code (currently 2.1.116)






