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Meet Gemini 3 Flash: Fast, strong, cost-effective

ALSO: How to build a functional app in minutes

Author

Zain Kahn
December 18, 2025

Welcome back, Superhuman. The past few days have felt like watching two heavyweight boxers trading blows. OpenAI dropped GPT-5.2 just last week, only for Google to counter with an unexpected release of its own — Gemini 3 Flash. The new model packs a serious punch for a fraction of the price, and should be good news for both users and developers.

Today: AI startup Manus joins an elite group, learn how to vibe code an app without Supabase, and get the latest prompts and trending social posts.

TODAY IN AI

Click to learn about Gemini Flash, a faster frontier model from Google. Source: Google.

1. Google launches Gemini Flash, a frontier model built for speed and efficiency: Google expanded its Gemini family of frontier models with Gemini 3 Flash — a cost-effective take on its popular Gemini 3 Pro model that’s rolling out now. Flash outperforms 2.5 Pro on several major benchmarks while being 3x faster at a fraction of the cost. Watch Gemini Flash generate an app or power AI Mode in Search. In separate news, Google upgraded Gemini’s Deep Research mode with custom charts, diagrams, and animations to help you master topics quickly.

2. Amazon in talks to invest $10B in OpenAI: Amazon is reportedly considering investing $10 billion or more into OpenAI, just over a month after OpenAI agreed to buy $38 billion in compute from Amazon Web Services. The deal would require OpenAI to use Amazon’s AI chips. The news comes amid a shakeup in Amazon’s AI leadership, with Peter DeSantis set to take over a new Amazon division that includes AI, silicon development, and quantum computing.

3. Manus passes $100M annual revenue run rate (ARR) just 8 months after launching: Manus hit a $100M ARR within a year of launching, joining an elite group of AI startups that includes Lovable, Cursor, and Replit. Manus also released Manus 1.6 this week, a leading core agent architecture that achieves more complex workflows with less supervision. Try it here.

How do top companies like Yahoo and IKEA explain complex info to employees and customers? They use Guidde, the AI that turns workflows into powerful How-To videos instantly.

Your first 25 videos are 100% no-cost

  1. Go to getmocha. com and sign up (for free).

  2. Describe your idea.

Sample Prompt: “Build a deal tracking app for business owners.”

  1. Answer a few setup questions (login, payments, features) to structure your app.

  2. Your entire app is generated automatically: backend, database, auth, UI, routing, and dashboard. No Supabase. No external setup.

  3. Add features by typing prompts, like:

  • “Add Google login”

  • “Store user info in the database”

  • “Add an AI chatbot with personalized tips”

  1. To add payments, use:

  • “Add a Stripe checkout for $15/month.“

  1. Once done, click Publish to go live. Hosting and deployment are handled automatically.

Try building your first app with Mocha here.

FROM THE FRONTIER

AI is evolving quickly — and several key groups are jockeying to shape its future

Made with Midjourney

Washington is divided. Congress has been slow to act, prompting many states to craft their own rules. Last week, President Trump signed an executive order to sue those states and instead establish a national AI framework — a move that has been met with bipartisan pushback.

Tech wants a seat at the table. Andreessen Horowitz, a leading venture capital firm, released a roadmap for AI legislation that it wants Congress to adopt. The core goal: creating trustworthy AI products that protect people and allow businesses to thrive over the long term. Read the proposed 9-pillar framework here.

Hollywood is organizing. A new group called the Creators Coalition on AI launched this week with 500+ signatories, including Ben Affleck, Natalie Portman, and Aaron Sorkin. Their message to Silicon Valley: "We are drawing a line between those who want to do this fast, and those who want to do this right.” The coalition formed partly in response to Disney's $1 billion investment in OpenAI — a deal that blindsided many in the industry.

Where do we go from here? Tech giants, Hollywood, Washington, and many others are racing to shape AI's future. The rules written in the next year or two won't just govern today's AI, they'll set the foundation for the next decade.

The AI consulting market is about to grow by a factor of 8X – from $6.9 billion today to $54.7 billion in 2032. But how do you turn your AI enthusiasm into marketable skills, clear services, and a serious business?

Our friends at Innovating with AI have trained 1,200+ AI consultants – and their exclusive consulting directory has driven Fortune 500 leads to graduates.

Enrollment in The AI Consultancy Project is opening soon – and you’ll only hear about it if you apply for access now.

IN THE KNOW

What’s trending on socials and headlines today

Meme of the day

📺️ Ad Campaigns: Learn how to create amazing ad visuals using this prompt.

🤖 Claude Updates: Claude Code launched 4 impressive updates, including prompt suggestions, a plugin marketplace, and more (videos included).

💌  Happy Holidays: This prompt from Nano Banana Pro can help you showcase your AI skills on this year’s holiday card.

📸 History, Visualized: AI-generated images like this one could change how we teach and learn about the past (it’s got close to 3,000 likes)

🎤 Schwarzenegger Solo: Need a laugh? Check out this viral video of Arnold Schwarzenegger singing—no, performing—Careless Whisper (1.5 million likes).

PRODUCTIVITY

5 New & Trending AI Tools

  • 📊 Nume*: is the world's first AI CFO that every startup and SME needs. Connects to Xero and QuickBooks in 5 minutes.

  • ➕ Trullion: Automate financial workflows for accounting and audit teams.

  • 🤝 Cluely: Takes perfect meeting notes and gives real-time answers,

    all while completely undetectable.

  • 📱 Graphite: Ship higher-quality code faster with AI.

  • 🧠 Supermemory: Delight your users with blazing-fast and scalable memory for your AI application.

* indicates a promoted tool, if any

PROMPT STATION

The DEPTH method for writing prompts

Explanation: 
D - Define Multiple Perspectives Instead of: "Write a marketing email" Use: "You are three experts: a behavioral psychologist, a direct response copywriter, and a data analyst. Collaborate to write..."

E - Establish Success Metrics Instead of: "Make it good" Use: "Optimize for 40% open rate, 12% CTR, include 3 psychological triggers"

P - Provide Context Layers Instead of: "For my business" Use: "Context: B2B SaaS, $200/mo product, targeting overworked founders, previous emails got 20% opens"

T - Task Breakdown Instead of: "Create campaign" Use: "Step 1: Identify pain points. Step 2: Create hook. Step 3: Build value. Step 4: Soft CTA"

H - Human Feedback Loop Instead of: Accept first output Use: "Rate your response 1-10 on clarity, persuasion, actionability, and factual accuracy. For anything below 8, improve it. If you made any factual claims you're not completely certain about, flag them as UNCERTAIN and explain why. Then provide enhanced version."

Sample Prompt:
You are three experts working together:
1. A neuroscientist who understands attention
2. A viral content creator with 10M followers  
3. A conversion optimizer from a Fortune 500

Context: Creating LinkedIn posts for AI consultants
Audience: CEOs scared of being left behind by AI
Previous posts: 2% engagement (need 10%+)

Task: Create post about ChatGPT enhancing productivity
Step 1: Hook that stops scrolling
Step 2: Story they relate to
Step 3: Actionable insight
Step 4: Engaging question

Format: 200 words max, grade 6 reading level
After writing: Score yourself and improve

Source: r/PromptEngineering

Isometric Cities

Source: mirianstudios

Midjourney Prompt: Present a clear, 45° top-down isometric miniature 3D cartoon scene of [city], featuring its most iconic landmarks and architectural elements. Use soft, refined textures with realistic PBR materials and gentle, lifelike lighting and shadows. Integrate the current weather conditions directly into the city environment to create an immersive atmospheric mood. Use a clean, minimalistic composition with a soft, solid-colored background. At the top-center, place the title "[city]" in large bold text, a prominent weather icon beneath it, then the date (small text) and temperature (medium text). All text must be centered with consistent spacing, and may subtly overlap the tops of the buildings. --ar 5:7

Tip: Use the same prompt in Gemini or ChatGPT without the parameters (at the end) to get similar results

Whenever you’re ready to take the next step

Grow customers & revenue: Join companies like Amazon, Hubspot, and Salesforce. Showcase your product to our 1M+ readers and 2M+ followers on socials. Get in touch.

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Until next time — Zain & the Superhuman AI team