ChatGPT and DeepSeek launch new, smarter models, while OpenAI Codex adds workflow tools

ChatGPT just got a big brain upgrade with its new GPT-5.5 model.

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ChatGPTChatGPT just got a big brain upgrade with its new GPT-5.5 model.

ChatGPT

3 updates

Expanded summary · ChatGPT

OpenAI has released GPT-5.5, its newest AI model, which they say is their smartest and most intuitive one yet.

ChatGPT just got a big brain upgrade with its new GPT-5.5 model.

Original reportingOpenAI releases GPT-5.5Read original ↗

Expanded summary · ChatGPT

The new GPT-5.5 model is designed to help you with complex tasks like writing code, doing research, analyzing information, and creating documents.

We are deploying industry-leading safeguards for this level of cyber capability. We first introduced cyber-specific safeguards with GPT‑5.2 ⁠ (opens in a new window) last year, which we have continued to test, refine, and build on in subse…

We are expanding access to accelerate cyber defense at every level.

Original reportingIntroducing GPT-5.5Read original ↗

Expanded summary · ChatGPT

OpenAI has added new safeguards to GPT-5.5 to make it safer, especially for advanced cybersecurity tasks.

GPT‑5.5 is a new model designed for complex, real-world work, including writing code, researching online, analyzing information, creating documents and spreadsheets, and moving across tools to get things done. Relative to earlier models, G…

We subjected the model to our full suite of predeployment safety evaluations and our Preparedness Framework, including targeted red-teaming for advanced cybersecurity and biolo…

We subjected the model to our full suite of predeployment safety evaluations and our Preparedness Framework, including targeted red-teaming for advanced cybersecurity and biology capabilities, and collected feedback on real use cases from…

Original reportingGPT-5.5 System CardRead original ↗

OpenAI Codex

3 updates

Expanded summary · OpenAI Codex

You can now set up Codex to run tasks automatically on a schedule, like getting a 'Morning Work Brief' every weekday.

Try these 10 prompts to move real work forward with dashboards, decks, workflows, and more. You’ve seen what Codex can do.

Now it’s time to put it to work.

Original reportingTop 10 uses for Codex at workRead original ↗

Expanded summary · OpenAI Codex

The app now helps you organize your work better with 'threads' for conversations and 'projects' to group related tasks.

The sidebar is where you navigate between threads, projects, and tools. Most of your work will begin by creating a new thread.

When you’re using Codex, think of a “thread” the same way you would think of a “chat” in ChatGPT.

Original reportingWorking with CodexRead original ↗

Expanded summary · OpenAI Codex

You can now access and create 'plugins' and 'skills' in Codex to customize how it works for your specific team and tasks.

To access plugins, select plugins in the top left corner of Codex. From there, you can see plugins that are recommended or already installed, browse the plugins library, or create a new plugin.

Creating a new plugin usually requires more technical expertise than creating a skill.

Original reportingPlugins and skillsRead original ↗

Claude

1 update

Expanded summary · Claude

Claude is partnering with NEC Corporation in Japan, which will use Claude to build AI tools for its 30,000 employees.

NEC Corporation will use Claude as it builds one of Japan’s largest AI-native engineering organizations, making it available to approximately 30,000 NEC Group employees worldwide. “This long-term partnership with Anthropic enables NEC to maximize the potential of AI in the Japanese market,” said Toshifumi Yoshizaki, Executive Officer and COO of NEC Corporation.

“Together, we aim to create solutions that meet the h…

“Together, we aim to create solutions that meet the hig…

Original reportingAnthropic and NEC partnerRead original ↗

DeepSeek

1 update

Expanded summary · DeepSeek

You can now try out the new DeepSeek V4 model in 'Expert Mode' or 'Instant Mode' on their chat website.

Try it now at chat.deepseek.com via Expert Mode / Instant Mode. API is updated & available today!

Enhanced Agentic Capabilities: Open-source SOTA in Agentic Coding benchmarks.

The new DeepSeek V4 model is much better at coding, has more world knowledge, and improved reasoning for math and science tasks.

Original reportingDeepSeek V4 Preview ReleaseRead original ↗