/AI3d ago

AI robotics company 1X launches World Model Lab led by former Luma AI founding engineer Samarth Sinha to train humanoid robots

It avoids VLA wrappers by pretraining models on physics.

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Original postRobert Scoble#323
Bernt Bornich@BerntBornich

We’re going all in on World Models.

Today we’re launching the 1X World Model Lab.

The bet is simple:

You can’t fine-tune your way to AGI.

And you definitely can’t fine-tune your way to robots that can operate in the physical world.

General-purpose humanoids need models that understand space, motion, objects, causality, affordances, physics, and action before they ever see a specific task.

The frontier is not better VLA wrappers.

The frontier is embodied world models.

The 1X World Model Lab will focus on large-scale embodied world model pretraining: building the most generalizable foundation model for humanoid robots from the ground up.

The next frontier in AI requires scaling:

web-scale media + egocentric human videos + sim + dexterous remote operated robot data + on-policy NEO data → real-world deployment for robot data collection and RL → abundance of data → physical AI

The robot collects data. The model gets better. The robot gets better. Repeat.

To lead this, we brought in one of the best for the mission: @_sam_sinha_ , as Head of World Models.

Sam was a founding research scientist at Luma AI and has been at the frontier of scaling multimodal generative video models his whole career.

If you’re the best in the world at large-scale pretraining, video models, robotics, RL, infra, or data — and you want your models to move atoms, not just pixels — join us.

Send background + evidence of exceptional ability to:

wmlab@1x.tech

We’re building the model that makes autonomous labor real.

9:19 AM · Jun 4, 2026 · 268.4K Views
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Many users praised 1X for hiring Sam Sinha to head its World Model Lab for embodied AI humanoids, though a few raised concerns about accountability and the validity of their approach.

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VIEWS79.1KBOOKMARKS73LIKES375RETWEETS28REPLIES52
Samarth Sinha@_sam_sinha_

I am SO excited to be sharing that I am joining @BerntBornich and @1x_tech to lead the new 1X World Model Lab aimed at building the next frontier of embodied AI! The core guiding principle of the lab is: scale up along every damn axis!! 🚀

Robotics data is NOT a second-class citizen - it is too important of a problem to be left to fine tuning! Your model needs to see your most important tokens from step 0

We need to think about robotics through the first principles of AI: how do we best utilize the vast amounts of web-scale media and how do we create a data-flywheel to collect millions of hours of rich robot interactions. There is no other moat in AI outside of data and @1x_tech has done an INCREDIBLE job scaling manufacturing, production and hardware to build humanoid robots that can create a unique data-flywheel in unstructured environments. Scaling data collection for highly dexterous on-policy robot data will be the only way for creating a moat in AI. @JackMonas and team have made great progress in building World Models, and now the goal is to supercharge this effort by starting a hyper-focused scale and data-pilled lab.

Before scaling compute / data / models, we are currently RAPIDLY scaling our team and hiring across the 4 core pillars of AI: model + data, data infra, ML infra and evals. Looking for folks that are excited about the 0->1 problem and share the same principles as us. There’s a single application for everyone in the lab - if you’re a good at engineering and ML, we will find a place for you in the team ❤️

AGI won’t be solved by fine-tuning… Let’s build the next frontier of AI together 🚀

My DMs are always open!!

Bernt Bornich@BerntBornich

We’re going all in on World Models.

Today we’re launching the 1X World Model Lab.

The bet is simple:

You can’t fine-tune your way to AGI.

And you definitely can’t fine-tune your way to robots that can operate in the physical world.

General-purpose humanoids need models that understand space, motion, objects, causality, affordances, physics, and action before they ever see a specific task.

The frontier is not better VLA wrappers.

The frontier is embodied world models.

The 1X World Model Lab will focus on large-scale embodied world model pretraining: building the most generalizable foundation model for humanoid robots from the ground up.

The next frontier in AI requires scaling:

web-scale media + egocentric human videos + sim + dexterous remote operated robot data + on-policy NEO data → real-world deployment for robot data collection and RL → abundance of data → physical AI

The robot collects data. The model gets better. The robot gets better. Repeat.

To lead this, we brought in one of the best for the mission: @_sam_sinha_ , as Head of World Models.

Sam was a founding research scientist at Luma AI and has been at the frontier of scaling multimodal generative video models his whole career.

If you’re the best in the world at large-scale pretraining, video models, robotics, RL, infra, or data — and you want your models to move atoms, not just pixels — join us.

Send background + evidence of exceptional ability to:

wmlab@1x.tech

We’re building the model that makes autonomous labor real.

3dViews 79.1KLikes 375Bookmarks 73
Kendall Pennington@Kenny___Rose

already a huge @_sam_sinha_ fan. so excited to have him lead the new 1X World Model Lab :)

he and @BerntBornich sat down with @Forbes earlier this week to talk about the role of the lab in our NEO roadmap and why "you can't fine-tune your way to AGI"

read it here: https://www.forbes.com/sites/johnkoetsier/2026/06/04/1x-launches-humanoid-robot-world-model-lab-you-cant-fine-tune-your-way-to-agi/

Samarth Sinha@_sam_sinha_

I am SO excited to be sharing that I am joining @BerntBornich and @1x_tech to lead the new 1X World Model Lab aimed at building the next frontier of embodied AI! The core guiding principle of the lab is: scale up along every damn axis!! 🚀

Robotics data is NOT a second-class citizen - it is too important of a problem to be left to fine tuning! Your model needs to see your most important tokens from step 0

We need to think about robotics through the first principles of AI: how do we best utilize the vast amounts of web-scale media and how do we create a data-flywheel to collect millions of hours of rich robot interactions. There is no other moat in AI outside of data and @1x_tech has done an INCREDIBLE job scaling manufacturing, production and hardware to build humanoid robots that can create a unique data-flywheel in unstructured environments. Scaling data collection for highly dexterous on-policy robot data will be the only way for creating a moat in AI. @JackMonas and team have made great progress in building World Models, and now the goal is to supercharge this effort by starting a hyper-focused scale and data-pilled lab.

Before scaling compute / data / models, we are currently RAPIDLY scaling our team and hiring across the 4 core pillars of AI: model + data, data infra, ML infra and evals. Looking for folks that are excited about the 0->1 problem and share the same principles as us. There’s a single application for everyone in the lab - if you’re a good at engineering and ML, we will find a place for you in the team ❤️

AGI won’t be solved by fine-tuning… Let’s build the next frontier of AI together 🚀

My DMs are always open!!

3dViews 4.8KLikes 44Bookmarks 12
Jack Monas@JackMonas

This is going to be fun....excited to scale this up with you @_sam_sinha_!

Samarth Sinha@_sam_sinha_

I am SO excited to be sharing that I am joining @BerntBornich and @1x_tech to lead the new 1X World Model Lab aimed at building the next frontier of embodied AI! The core guiding principle of the lab is: scale up along every damn axis!! 🚀

Robotics data is NOT a second-class citizen - it is too important of a problem to be left to fine tuning! Your model needs to see your most important tokens from step 0

We need to think about robotics through the first principles of AI: how do we best utilize the vast amounts of web-scale media and how do we create a data-flywheel to collect millions of hours of rich robot interactions. There is no other moat in AI outside of data and @1x_tech has done an INCREDIBLE job scaling manufacturing, production and hardware to build humanoid robots that can create a unique data-flywheel in unstructured environments. Scaling data collection for highly dexterous on-policy robot data will be the only way for creating a moat in AI. @JackMonas and team have made great progress in building World Models, and now the goal is to supercharge this effort by starting a hyper-focused scale and data-pilled lab.

Before scaling compute / data / models, we are currently RAPIDLY scaling our team and hiring across the 4 core pillars of AI: model + data, data infra, ML infra and evals. Looking for folks that are excited about the 0->1 problem and share the same principles as us. There’s a single application for everyone in the lab - if you’re a good at engineering and ML, we will find a place for you in the team ❤️

AGI won’t be solved by fine-tuning… Let’s build the next frontier of AI together 🚀

My DMs are always open!!

3dViews 5.5KLikes 51Bookmarks 4
Bernt Bornich@BerntBornich

https://www.forbes.com/sites/johnkoetsier/2026/06/04/1x-launches-humanoid-robot-world-model-lab-you-cant-fine-tune-your-way-to-agi/

3dViews 1.5KLikes 28Bookmarks 3
Animesh Garg@animesh_garg

@BerntBornich great hire in @_sam_sinha_ - I can attest to that

3dViews 636Likes 13Bookmarks 1
1X@1x_tech

@BerntBornich Yuge

3dViews 695Likes 20
Bernt Bornich@BerntBornich

@StephanSturges yes

3dViews 537Likes 15
Samarth Sinha@_sam_sinha_

Apply for the lab here:

https://1x.recruitee.com/o/ai-researcher

Blog post about the new lab:

https://www.1x.tech/discover/1x-world-model-lab

@Forbes article covering the lab:

https://www.forbes.com/sites/johnkoetsier/2026/06/04/1x-launches-humanoid-robot-world-model-lab-you-cant-fine-tune-your-way-to-agi/

3dViews 313Likes 15
Jiaming Song@baaadas

@_sam_sinha_ @BerntBornich @1x_tech Congrats, and really excited about what you will build next!

Samarth Sinha@_sam_sinha_

I am SO excited to be sharing that I am joining @BerntBornich and @1x_tech to lead the new 1X World Model Lab aimed at building the next frontier of embodied AI! The core guiding principle of the lab is: scale up along every damn axis!! 🚀

Robotics data is NOT a second-class citizen - it is too important of a problem to be left to fine tuning! Your model needs to see your most important tokens from step 0

We need to think about robotics through the first principles of AI: how do we best utilize the vast amounts of web-scale media and how do we create a data-flywheel to collect millions of hours of rich robot interactions. There is no other moat in AI outside of data and @1x_tech has done an INCREDIBLE job scaling manufacturing, production and hardware to build humanoid robots that can create a unique data-flywheel in unstructured environments. Scaling data collection for highly dexterous on-policy robot data will be the only way for creating a moat in AI. @JackMonas and team have made great progress in building World Models, and now the goal is to supercharge this effort by starting a hyper-focused scale and data-pilled lab.

Before scaling compute / data / models, we are currently RAPIDLY scaling our team and hiring across the 4 core pillars of AI: model + data, data infra, ML infra and evals. Looking for folks that are excited about the 0->1 problem and share the same principles as us. There’s a single application for everyone in the lab - if you’re a good at engineering and ML, we will find a place for you in the team ❤️

AGI won’t be solved by fine-tuning… Let’s build the next frontier of AI together 🚀

My DMs are always open!!

2dViews 498Likes 5Bookmarks 1
uɐɥdǝʇS@StephanSturges

@BerntBornich can we finally forget about VLAs?

3dViews 616Likes 9
Kevin Gray@graykevinb

@BerntBornich @Scobleizer this is not the path to AGI. World models won't work well. They will work, but not well

3dViews 51Likes 4
Gowthami@gowthami_s

@_sam_sinha_ @BerntBornich @1x_tech Congrats Sam!! 🎉

Samarth Sinha@_sam_sinha_

I am SO excited to be sharing that I am joining @BerntBornich and @1x_tech to lead the new 1X World Model Lab aimed at building the next frontier of embodied AI! The core guiding principle of the lab is: scale up along every damn axis!! 🚀

Robotics data is NOT a second-class citizen - it is too important of a problem to be left to fine tuning! Your model needs to see your most important tokens from step 0

We need to think about robotics through the first principles of AI: how do we best utilize the vast amounts of web-scale media and how do we create a data-flywheel to collect millions of hours of rich robot interactions. There is no other moat in AI outside of data and @1x_tech has done an INCREDIBLE job scaling manufacturing, production and hardware to build humanoid robots that can create a unique data-flywheel in unstructured environments. Scaling data collection for highly dexterous on-policy robot data will be the only way for creating a moat in AI. @JackMonas and team have made great progress in building World Models, and now the goal is to supercharge this effort by starting a hyper-focused scale and data-pilled lab.

Before scaling compute / data / models, we are currently RAPIDLY scaling our team and hiring across the 4 core pillars of AI: model + data, data infra, ML infra and evals. Looking for folks that are excited about the 0->1 problem and share the same principles as us. There’s a single application for everyone in the lab - if you’re a good at engineering and ML, we will find a place for you in the team ❤️

AGI won’t be solved by fine-tuning… Let’s build the next frontier of AI together 🚀

My DMs are always open!!

3dViews 785Likes 1Bookmarks 1
ori@orispector

@BerntBornich @_sam_sinha_ demon time post okc loss

3dViews 115Likes 5
1X@1x_tech

@_sam_sinha_ @BerntBornich Welcome to the team, Sam

3dViews 274Likes 8
David Lindell@DaveLindell

@_sam_sinha_ @BerntBornich @1x_tech Congrats, Sam! I guess we'll have to wait a little longer for you to come back :)

3dViews 186Likes 4
Shane Gu@shaneguML

@_sam_sinha_ @BerntBornich @1x_tech Congratulations!!

Samarth Sinha@_sam_sinha_

I am SO excited to be sharing that I am joining @BerntBornich and @1x_tech to lead the new 1X World Model Lab aimed at building the next frontier of embodied AI! The core guiding principle of the lab is: scale up along every damn axis!! 🚀

Robotics data is NOT a second-class citizen - it is too important of a problem to be left to fine tuning! Your model needs to see your most important tokens from step 0

We need to think about robotics through the first principles of AI: how do we best utilize the vast amounts of web-scale media and how do we create a data-flywheel to collect millions of hours of rich robot interactions. There is no other moat in AI outside of data and @1x_tech has done an INCREDIBLE job scaling manufacturing, production and hardware to build humanoid robots that can create a unique data-flywheel in unstructured environments. Scaling data collection for highly dexterous on-policy robot data will be the only way for creating a moat in AI. @JackMonas and team have made great progress in building World Models, and now the goal is to supercharge this effort by starting a hyper-focused scale and data-pilled lab.

Before scaling compute / data / models, we are currently RAPIDLY scaling our team and hiring across the 4 core pillars of AI: model + data, data infra, ML infra and evals. Looking for folks that are excited about the 0->1 problem and share the same principles as us. There’s a single application for everyone in the lab - if you’re a good at engineering and ML, we will find a place for you in the team ❤️

AGI won’t be solved by fine-tuning… Let’s build the next frontier of AI together 🚀

My DMs are always open!!

3dViews 1.4KLikes 2Bookmarks 0
Wei Yu@GnosisYu

@_sam_sinha_ @BerntBornich @1x_tech Huge congrats, @sam_sinha! 🎉

3dViews 43Likes 1Bookmarks 1
dar@radbackwards

@_sam_sinha_ @BerntBornich @1x_tech Welcome to the team Sam :)

3dViews 96Likes 4
ali@aliuahma

@_sam_sinha_ @BerntBornich @1x_tech congrats samarth!!

3dViews 74Bookmarks 1
Sam Padilla@theSamPadilla

@BerntBornich At last.

Time to move past VLAs please.

3dViews 71Likes 4
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