This FREE AI Previz Tool is Awesome & a Secret Video Model!

A free, open-source tool that gets you the exact shot before you generate, plus the fix for when 3D-guided AI video comes out stiff. And a secret AI video model just turned up in blind tests on the Arena, swinging big on motion.

Also this week: Kling's reported IPO, Ideogram's first vector model, and a Seedream 5.5 leak.

WHAT'S IN THIS ONE

- Iron Goddess: an unclaimed AI video model that showed up in battle mode on the Arena this week. Tests from Synthesis (fluid dynamics), Leo (a character shot), Brent Lynch (action, plus the same prompt in Seedance 2.5) and my own Man in the Blue Business Suit run. Big, fast, swing-for-the-fences motion; frame by frame, the fastest moments get smudgy. Seedance 2.5 holds together better, with less dynamic movement.

- Who made it? Nobody has said. My bet is Alibaba, which said at its Apsara conference in September that a new video model is coming in November. A bet, not a fact.

- Kling: Bloomberg reports a Hong Kong IPO for Kuaishou's AI video unit as soon as next year (not confirmed). In July, Kling raised nearly $3B at about $18B post-money, with Tencent, Alibaba and Baidu among the investors. Kuaishou keeps about 68%.

- The Blender-to-Seedance workflow gets great results, but it's slow to render and you need some Blender to drive it.

- CozyClay 3.0: a free, open-source 3D previs tool built for AI video. One-click install through Pinokio; it runs in your browser and doesn't need a GPU. Its agent can build the set for you through your ChatGPT sign-in (Codex) or an API key (Anthropic, OpenAI, Gemini). I had it build a private-eye office and walk the detective through it. You still render the shot with your own video model.

- The stiff-shot fix, via PJ: if your 3D-guided generations come out stiff, screenshot the previs, lay it out as a storyboard and go image-to-video. You keep the exact composition, lens and aspect ratio.

- Quick hits: Ideogram Vector, Ideogram's first vector model, does text-to-SVG and image-to-SVG in the app and the API. And Seedream 5.5 looks to be on the way: 100-layer scene decomposition (up from 10), 80+ rounds of drift-resistant local editing, and 4K. Those specs come from a leak (Emily, @IamEmily2050), not ByteDance.

SPONSOR
This video is sponsored by Recraft!
4.1 Flash makes an image in about 1.3 seconds, and when you find a keeper, Enhance upscales and cleans it up. In Recraft Studio you can build your own style from reference images, test it with the built-in prompts, and now share it; my Quiet Inkwork style is linked below. Most of the major image and video models are in Recraft Studio too, and there's a free plan.

► Try Flash: https://go.recraft.ai/v4flash_tm
► Try Styles: https://go.recraft.ai/v4styles_tm
► My Quiet Inkwork style: https://www.recraft.ai/styles/a327e42e-ad48-4601-a3f8-ddd524aecd6b

LINKS

Iron Goddess, first spotted by Brent Lynch: https://x.com/BrentLynch/status/2112197088905978208

The Arena: https://arena.ai

Alibaba's November video model (Apsara coverage, in Chinese): https://finance.sina.com.cn/tech/roll/2026-09-22/doc-inissitm5734586.shtml

Kling's IPO report and July round: https://technode.com/2026/10/08/kuaishous-kling-ai-reportedly-picks-banks-for-hong-kong-ipo-targeting-at-least-1-billion/

CozyClay: https://github.com/NomaDamas/CozyClay

CozyClay on Pinokio: https://pinokio.co/posts/01m5fgyjx25w8fmtgz6m42cs5w
Ideogram Vector: https://ideogram.ai/models/vector

The Seedream 5.5 leak:
https://x.com/IamEmily2050/status/2113289020881203215
Newsletter: https://theoreticallymedia.com/newsletter/



CHAPTERS
00:00 Free 3D for the exact shot, and a secret AI video model
00:16 Iron Goddess: a mystery model on the Arena
00:58 Tests: fluid dynamics, then a character shot
01:47 Action: Brent Lynch's runner
02:48 The catch: fast motion, smudgy frames
03:52 Same prompt in Seedance 2.5
04:29 My test: the Man in the Blue Business Suit
05:24 Who made it? My Alibaba bet
06:05 Side note: Kling's reported IPO, and its investors
06:52 Free 3D tools next (but first, Recraft)
07:08 Recraft V4.1 Flash and custom styles (sponsor)
10:23 The Blender-to-Seedance workflow, and why it's slow
11:22 CozyClay 3.0: free, open-source 3D for AI video
11:53 Install it with Pinokio
12:49 Let Codex or Claude build the set
13:50 A private-eye set, blocked and animated
14:54 Why 3D-guided AI video looks stiff
15:10 PJ's fix: screenshot the previs, go image-to-video
16:07 Verdict: not a Blender replacement, worth the download
16:31 Quick hits: Ideogram Vector
16:51 Seedream 5.5 is coming (leak)
17:32 Next week: Kling 4, and Planet Hell