🤖 OpenAI launches Codex app

Good Morning! OpenAI just dropped its Codex desktop app, turning developers into managers of AI coding agents. Plus, I’ll show you how to create videos, images, and websites for free.

In today’s AI newsletter:

• How to create videos, images, and full websites for free

• OpenAI launches Codex app for multi-agent coding

• SpaceX Acquires xAI

• 4 new AI tools worth trying

AI CODING

🖥️ OpenAI Launches Codex Desktop App for Multi-Agent Coding

OpenAI released Codex, a macOS desktop app that lets developers run multiple AI coding agents in parallel, shifting software development from writing code to supervising autonomous AI teammates that can work for hours or weeks.

• Powered by GPT-5.2-Codex; over 1 million developers used Codex in the past month, with usage doubling since mid-December

• "Skills" let Codex connect to Figma, Linear, Vercel, and other tools; "Automations" handle recurring tasks like issue triage and CI monitoring

• Built-in worktrees allow each agent to work on isolated code copies without conflicts

• Direct response to Anthropic's Claude Code; OpenAI plans Windows version soon

The IDE is being replaced by the command center. Instead of typing code, developers are now orchestrating fleets of AI agents, delegating, reviewing, and merging. OpenAI is betting that whoever owns the developer workflow owns the future of software. With features like parallel agents, scheduled automations, and cross-tool integrations, Codex is positioning itself as the operating system for AI-native development.

AI NEWS

🚀 SpaceX Acquires xAI in $1.25 Trillion Mega-Merger

Elon Musk is combining SpaceX and xAI, creating the world's most valuable private company at $1.25 trillion, with an ambitious plan to build AI data centers in space ahead of a massive IPO expected later this year.

• xAI will operate as a division within SpaceX; the combined entity also includes X (formerly Twitter)

• Merger comes ahead of an anticipated SpaceX IPO later this year, expected to push valuation to $1.25 trillion

• Musk claims space-based AI compute will be cheaper than terrestrial data centers within 2–3 years, powered by near-constant solar energy

The bigger picture is that Musk bets that the future of AI infrastructure is literally off-planet. If he's right, the company that can launch the most mass to orbit will dominate AI compute. If he's wrong, investors in the upcoming IPO are buying the most expensive science fiction project in history.

HOW TO AI

🗂️ How to Create Videos, Images, and Full Websites for Free

In this tutorial, you’ll learn how to generate cinematic videos, high-quality images, and complete production-ready websites using three free AI platforms. You’ll see exactly how to access each tool, write prompts the right way, compare outputs, and download or refine results.

🧰 Who is This For

• Founders who want fast visuals or a full website without hiring a team

• Creators who need videos and images for content or thumbnails

• Designers looking for quick starting points and inspiration

• Anyone who wants professional outputs without paying for multiple tools

STEP 1: Generate Videos for Free Using DesignArena

Open your browser and go to designarena.ai. When the page loads, you’ll immediately notice how clean and simple the interface is. In the center of the screen, there’s a large text input box designed for prompts. Just below it, you’ll see different creation categories such as Website, Image, Logo, and Video.

“Generate a 30-second, cinematic-style video. The subject is a lone astronaut standing on the dusty, red surface of Mars. The astronaut slowly turns their head to look up at the Earth hanging small and blue in the black sky. Focus on the reflective visor showing a wide, sweeping panorama of the Martian landscape and the distant sun. The mood should be one of awe, isolation, and profound wonder.”

Once the prompt is ready, press Enter or click the Generate button beside the input bar.

STEP 2: Compare Top Video Models Side by Side and Download

After a few seconds, DesignArena will display the results directly on your screen. Instead of showing just one video, it generates outputs from multiple top video models at the same time. You’ll see each model’s result placed side by side, making it incredibly easy to compare quality, motion, realism, lighting, and overall cinematic feel.

Once you find the video you like, simply download it. There are no paywalls, no watermarks, and no forced upgrades. You can repeat this process as many times as you want with different prompts and styles.

STEP 3: Create Unlimited Images for Free Using GenTube

For image generation, the second tool is GenTube.

Open gentube.app in your browser. When you arrive, create a free account. Once you’re logged in, you’ll see a very minimal dashboard. At the center, there’s a simple text bar that says something like “Type to create.” This is where all the magic happens.

Click inside the text bar and write your image prompt. For example:

“Ultra-detailed, hyperrealistic portrait of a majestic horse running through a misty field at sunrise, golden light shining through the fog, cinematic composition, natural motion blur, captured with a Canon EOS R5 and 85mm lens, 8K resolution, masterpiece, photorealistic, volumetric lighting, depth of field.”

Once your prompt is ready, click Generate. The image appears almost instantly.

What makes GenTube especially useful is that it doesn’t aggressively limit generations. You can keep generating images again and again, which makes it perfect for thumbnails, Instagram posts, design mockups, or quick visual experiments without worrying about credits.

STEP 4: Build Full Websites for Free Using Same

The third tool is Same, and it focuses on generating complete websites using chat.

Go to same.new. When the site loads, you won’t see a complicated editor or drag-and-drop builder. Instead, you’ll see a clean chat interface. This is intentional, the entire website is built through conversation.

In the chat box, type a clear request describing the website you want and choose the model you prefer. For example:

“Create a clean, modern website for a luxury perfume brand with a hero section, product gallery, and contact form.”

Within seconds, the AI generates a full website layout. This includes structure, sections, spacing, and styling.

ElevenLabs released Eleven v3, its most expressive text-to-speech model, now out of alpha and generally available with improved stability and multi-voice dialogue generation.

StepFun open-sourced Step 3.5 Flash, a 196B-parameter MoE model (11B active) purpose-built for agents, with inference speeds up to 350 tokens/sec and a 256K context window.

xAI launched Grok Imagine 1.0, its upgraded video generation model with 10-second clips at 720p and native audio—claiming 1.245 billion videos generated in the last 30 days.

🎮 Genie 3: Google’s world model that generates interactive environments from prompts

🚀 Kimi K2.5: Moonshot AI’s powerful open-source model built for agents

📚 Gemini Deep Research Agent: AI that handles long research tasks

🎥 Grok Imagine: XAI's Video Generation Model now available via API

THAT’S IT FOR TODAY

Thanks for making it to the end! I put my heart into every email I send, I hope you are enjoying it. Let me know your thoughts so I can make the next one even better!

See you tomorrow :)

- Dr. Alvaro Cintas