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Justine Moore

@venturetwins

Dec 28, 2025

My favorite paper this year: "Video models are zero-shot learners and reasoners"

It illustrates that video models show emergent visual reasoning at scale - they can solve vision tasks they weren't trained for.

This may be the "GPT moment" for vision. Let's break it down 👇

To start - why believe that video models might develop visual reasoning?

A similar thing happened in text. We used to train specific models for each task - but now, LLMs have general language understanding and can tackle lots of tasks that they weren't explicitly trained for.

It's feasible that video models may do the same at scale.

This paper measured 18k+ videos generated by Veo 3 across both qualitative and quantitative tasks.

It found that Veo can perceive, modify, and manipulate the visual world (starting from image + text prompts) - showcasing early reasoning skills that it wasn't explicitly trained for.

We'll tackle each category one-by-one.

Read 10 tweets

Justine Moore

@venturetwins

Dec 14, 2025

There's an insane new hack for prompting Nano Banana Pro.

You can now save image references as "Elements" and tag them in prompts to get consistent characters, styles, and environments.

I used it to put myself into Ghibli sets. How to do this on @krea_ai 👇

@krea_ai First, define your Elements. I used:

- Me (tagged @ justine)
- An image of each scene I wanted (tagged @ ghibli)
- The type of photo (tagged @ selfie)

Then prompt things like - "@ justine taking an @ selfie style image on set of @ ghibli Spirited Away"

A few things to note:

1) Elements PERSIST across chat sessions. So I can start a new chat and tag "@ justine" and it will work!

2) You can also give context to the model. I usually provide a description of the goal.

3) The model can reason within the Elements. So I can tag "@ Ghibli" + the movie name and it will find the right frame.

Read 5 tweets

Justine Moore

@venturetwins

Nov 20, 2025

I had early access to Nano Banana Pro and tested a LOT of things.

Now I'm sharing some of my favorite prompts + use cases.

This is a really cool model, and there's a lot to explore 👇

1) Grounding image generation with search.

The model can now search Google and use the results to guide generation (w/ impressive long-form text rendering).

"an X screen showing the most popular tweets of all time"
"a flyer with 3 places chocolate lovers should visit in Paris"

2) Technical drawings or illustrated explainers.

The model is really good at taking a picture of an object or location and turning it into a sketch or explainer.

Ask for "a technical sketch / architectural diagram / illustration explainer of _______"

Tip: use Gemini 3 to write a more detailed prompt if you want all the measurements to be accurate.

Read 8 tweets

Justine Moore

@venturetwins

Sep 22, 2025

New tool to swap characters in a video: Wan 2.2 Animate

Spent a few hours testing it out this weekend and have some thoughts on strengths + weaknesses.

It's particularly strong at videos like this where you need to replicate lip sync and body movement. Other tips ⬇️

First - the driving video needs to have a single character facing forward the entire time.

I had a bunch of failed generations because of this.

The clip below is the furthest away I got the character + it still worked. But as you can see, there's some warping.

It won't 100% maintain the character you're swapping in.

Particularly in cases like this, where the driving character has longer hair than the ref image, you'll get some "mixing." Faces also blended a bit.

(most AI influencers won't show the ref photo so you won't see this!)

Read 5 tweets

Justine Moore

@venturetwins

Sep 18, 2025

Today is the annual @a16z AI Creative Summit ✨

Three years ago, I went down the rabbit hole on AI x creative tools - and it's been incredible to see how quickly this space has evolved.

Thrilled to bring together the best founders + creators to share learnings + try new tools!

Our curated group of creators will spend the day in demo sessions featuring the best tools across modalities: @elevenlabsio, @theworldlabs, @krea_ai, @hedra_labs, @ideogram_ai, @heyglif, @LumaLabsAI, @ViggleAI

We're very lucky to have these founders + product leads join us.

@elevenlabsio @theworldlabs @krea_ai @hedra_labs @ideogram_ai @heyglif @LumaLabsAI @ViggleAI Exciting launch today - @LumaLabsAI's Ray 3 dropped, and the team is here to give our creators a demo + chat through the model strengths.

It's a reasoning video model that can generate studio-grade HDR 🤯

Check out one of my outputs ⬇️

Read 6 tweets

Justine Moore

@venturetwins

Aug 12, 2025

🚨 New @a16z thesis: AI x commerce

AI will change the way we shop - from where we find products to how we evaluate them, when we buy, and much more.

What types of purchases will be disrupted, and where does opportunity exist in the age of AI?

More from me + @arampell 👇

To start - what are the categories of commerce? (for consumers)

We divide them by level of consideration, from impulse buys to life purchases.

These have vastly different processes - you don't buy a new backpack and a car in the same way - which means the way AI touches each purchase category will vary.

Some thoughts on how this might shake out:

1) Impulse buys - the candy bars you pick up at the checkout counter (or their digital equivalent).

You don't do a lot of research in advance, so it's tough for AI to play a role in your shopping process.

But the algorithms on social apps will continue to improve + target you with more relevant impulse purchases (like that cat-shaped water bottle or $15 t-shirt from your favorite show).

Read 8 tweets

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