Welcome to Jumble, your go-to source for AI news updates. OpenAI’s Sora 2 lands with synchronized audio, self-insertion cameos, and far better physics, while Perplexity makes its AI browser free so anyone can try assistant-powered browsing. Plus fresh moves in AI infrastructure and policy. Let’s dive in ⬇️
In today’s newsletter:
🌟 Sora 2 pushes video realism
🧭 A free AI browser to try
🚙 EU eyes a push for self-driving
🧱 Memory giants back Stargate
🎯 Weekly Challenge: Cameo remix sprint
🎥 Sora 2 Is Unbelievably Good
OpenAI introduced Sora 2, a flagship video and audio model focused on physical accuracy, realism, and control. It now generates synchronized dialogue and sound effects, maintains scene state across shots, and models failure realistically, like a missed basketball rebounding instead of teleporting.
A new social iOS Sora app lets you create short clips, remix others, and insert yourself via verified “cameos.” Initial rollout starts in the U.S. and Canada with invites; access expands soon, and an API is planned. Sora 2 is initially free with generous limits, while a higher-quality Sora 2 Pro tier will be available to ChatGPT Pro users on the web.

Credit: Sora 2, OpenAI
🔊 What’s New and Why It Matters
Sora 2’s headline upgrades include synchronized audio, sharper realism across styles, and higher steer-ability for multi-shot prompts. It can place a recorded likeness into generated scenes with strong fidelity and user controls for consent and removal. The app is designed to bias toward creation over feed time, with parental controls and wellbeing nudges built in.
Sora 2 is here.
— #OpenAI (#@OpenAI)
5:20 PM • Sep 30, 2025
🧪 How It Stacks Up
Coverage highlights Sora 2’s “cameos” and the invite-only social app, positioning it as a TikTok-style playground for AI video. Competing tools from Google and Runway have pushed quality, but Sora 2’s physics and self-insertion plus synchronized audio set a new bar in realism and control. Early reports say an API is coming, which would widen production use.
🚧 Limits and Availability
Sora 2 isn’t perfect; OpenAI published a system card detailing safety constraints, provenance, and likeness controls. Public figure use requires explicit consent, and the app launches invite-only on iOS first, with wider regions and access later. For professionals, the big watch items are license clarity for commercial use, watermarking, and when the API and longer durations arrive.
🌐 What You Can Do With Perplexity’s Free AI Browser
Perplexity’s Comet browser (formerly a $200/month perk) just went free for everyone. The AI assistant is built into the browsing experience and can help with research, shopping, trip planning, and inbox tasks.
Perplexity also introduced Comet Plus, a $5 add-on (included with Pro and Max) that surfaces curated news from major publishers with shared revenue to rights holders. Rate limits apply on the free tier, but the goal is to make AI-enhanced browsing mainstream.
🛠 Practical Moves to Try
Use Comet to summarize dense articles with citations, compare product specs across retailer pages, auto-organize tab chaos, and plan multi-stop travel with source-linked itineraries. The product page spotlights task flows like grouping tabs, drafting emails from your calendar, and guided shopping; the assistant rides along rather than acting as a bolt-on.
Perplexity launched Comet - the first agentic browser.
It runs workflows, automates tedious tasks, and thinks for itself.
Here are 8 ways to use it right now:
1. Writing & Content Creation
— #Artificial Intelligence (AI) • ChatGPT (#@chatgptricks)
10:00 AM • Sep 20, 2025
🧭 Where It Fits
Comet competes with AI-augmented Chrome and others, but its assistant-first posture plus publisher partnerships aim to counter “AI slop” by prioritizing high-quality sources. If it stays free indefinitely as stated, it could nudge everyday users to treat the browser like a research copilot instead of a passive window.
🔒 Privacy Trust and Sources
Comet leans on cited answers and publisher partnerships to counter low quality results. Perplexity says the free tier is indefinite with rate limits, while Comet Plus pays publishers a reported 80 percent revenue share to surface vetted reporting. The pitch is fewer copy paste loops and clearer provenance as you browse. Users should still review source links before acting.
Weight transfer is one of the biggest bottlenecks when performing distributed RL on high-capacity models.
Our first Perplexity Research blog explains how Perplexity's inference engineers harnessed RDMA point-to-point communication to unlock ultra-fast parameter updates for
— #Perplexity (#@perplexity_ai)
10:00 PM • Oct 1, 2025
🚀 Power Users and Workflows
If you juggle research, travel planning, or competitive scans, Comet’s assistant follows you page to page, keeps context, and can offload longer jobs with a new Background Assistant available to some paid tiers. The free global release positions Comet as a challenger to Chrome with an assistant first model that bundles summaries, tab grouping, and guided shopping.
This Week’s Scoop 🍦
🧩 Weekly Challenge: Sora 2 Cameo Remix Sprint
If you don’t already have an access code, you’ll likely get access to Sora 2 sometime this week. So, why not take it for a spin?
Challenge: Make a 10-second scene that teaches or entertains, starring you. In the Sora app, record the short verification clip to enable cameos
Here’s what to do:
🌟 Set the Goal
Make a 10 second clip that teaches or entertains starring you.
🎭 Enable Cameos
Open Sora, record the quick verification clip to unlock your cameo.
✍️ Write the Idea
One sentence with a twist, for example you coaching your future self.
🎙️ First Take
Generate the scene with dialogue and ambient sound. Save Version A.
🔁 Remix Twice
Change setting and pacing for Versions B and C. Keep the same spoken line.
🎚️ Refine the Details
Adjust timing, add captions, a title card, and a short credits slide with your prompt.
✅ Consent Check
Use only your likeness or get permission from anyone featured.
📤 Share and Learn
Post your best cut to the Sora social feed. Add a short description of the idea and what you tried. Ask viewers to rate lip sync and realism in the comments. Also send it to two friends for private feedback.
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Have you tried Sora 2 yet? If so, what did you think? And, are AI browsers the future? We’d love to hear your thoughts. See you next time! 🚀
Stay informed, stay curious, and stay ahead with Jumble!
Zoe from Jumble
