AI21 Labs

8 statements across 1 episodes · 4 bullish · 3 bearish · 1 people on the record · first statement Oct 11, 2025 by Barak Lenz · said 15 times in 5 episodes since 2024 · across every show →

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brought up most by Barak Lenz (2), Vibhu Sapra (1), Shawn Wang (1), Dan Fu (1)

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Everything said about AI21 Labs, oldest first

Oct 11, 2025
Insight
AI21 CTO: AI systems must be model-agnostic and action-oriented
“AI systems need to be model agnostic. They shouldn't care about which model that they use, and they should look at what I call actions, which is a combination of a model with a prompt and maybe a set of tools that it can use and say, what can an action do for …”
Barak Lenz Oct 11, 2025 ▶ 31:46 Building Jamba 3B: the tiny Hybrid Transformer State Space Reasoning Model - Barak Lenz, CTO of AI21
Oct 11, 2025 negative
Assertion Not checkable as stated
Lenz: No open-source infrastructure can train very large models
“And we're using our own infrastructure to train our models. There still isn't an open source infrastructure that I could say, use this to train your very, very large model.”
Barak Lenz Oct 11, 2025 ▶ 20:10 Building Jamba 3B: the tiny Hybrid Transformer State Space Reasoning Model - Barak Lenz, CTO of AI21
Oct 11, 2025 positive
Assertion Contradicted
Lenz: AI21's Jamba is the first hybrid model architecture
“Since then, we've released several models, recent model lines in called Jamba, which I think the fascinating part about it is, is the first hybrid model. It's not just attention.”
Barak Lenz Oct 11, 2025 ▶ 2:20 Building Jamba 3B: the tiny Hybrid Transformer State Space Reasoning Model - Barak Lenz, CTO of AI21
Oct 11, 2025 negative
Insight
Lenz: Engineers seeking online answers are not at the frontier
“And I'm looking for people that try to solve problems on their own. Because if you think you're gonna found the answers online, I think you're not in the frontier.”
Barak Lenz Oct 11, 2025 ▶ 21:55 Building Jamba 3B: the tiny Hybrid Transformer State Space Reasoning Model - Barak Lenz, CTO of AI21
Oct 11, 2025 positive
Insight
Lenz: Middle attention placement at 1:8 ratio optimizes hybrid models
“Putting it the first or the last performed worse than in the middle. And one to eight was good enough. You know, you might get very slight improvements with one to six, but it was marginal, maybe within the standard deviation.”
Barak Lenz Oct 11, 2025 ▶ 10:16 Building Jamba 3B: the tiny Hybrid Transformer State Space Reasoning Model - Barak Lenz, CTO of AI21
Oct 11, 2025 bearish
Prediction Not checkable as stated
Lenz: Full attention models will decline as sequence lengths rise
“I can definitely see sequence length rising, and I can't see full attention models being as prominent as they are today. So, so, so at least they'll have less full attention layers and I hope they'll have more innovations like Mumbai.”
Barak Lenz Oct 11, 2025 ▶ 11:03 Building Jamba 3B: the tiny Hybrid Transformer State Space Reasoning Model - Barak Lenz, CTO of AI21
Oct 11, 2025 bullish
Prediction Not checkable as stated
Lenz: Hybrid Transformer models are here to stay for long context
“If I had to guess hybrid models are here to stay just because the efficiency without sacrificing the performance is, is too much to give up. You know, the attention is so expensive. The quadratic cost and the linear memory cost is so much that I think for long…”
Barak Lenz Oct 11, 2025 ▶ 9:13 Building Jamba 3B: the tiny Hybrid Transformer State Space Reasoning Model - Barak Lenz, CTO of AI21
Oct 11, 2025 bullish
Disclosure
Lenz: AI21 will release a 3B dense Jamba model for edge devices
“And we're actually releasing new versions of our Jamba models soon, including a three B dense model. It's aimed for long context on edge devices.”
Barak Lenz Oct 11, 2025 ▶ 2:33 Building Jamba 3B: the tiny Hybrid Transformer State Space Reasoning Model - Barak Lenz, CTO of AI21
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