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Claude Fable 5 and new AI safety fables
One step further into the power politics of frontier AI systems.
Jun 9
•
Nathan Lambert
103
1
9
Farewell Ai2
This was my last week at the Allen Institute for AI (Ai2), where I got the great privilege to work on the Olmo models, to grow, to learn, and to have…
Jun 2
•
Nathan Lambert
104
13
4
Open and closed models are on different exponentials
Where marginally higher intelligence drives value, and where it doesn't.
Jun 1
•
Nathan Lambert
79
14
6
May 2026
Some ideas for what comes next, May 2026
Gemini Flash 3.5, Mythos, open-closed balance, America's open-source surge, emerging power struggles and more.
May 26
•
Nathan Lambert
101
18
9
Latest open artifacts (#21): Open model bonanza! Gemma 4, DeepSeek V4, Kimi K2.6, MiMo 2.5, GLM-5.1 & others. On CAISI's V4 assessment.
An eventful month with one flagship release after another
May 16
•
Florian Brand
and
Nathan Lambert
30
1
3
How open model ecosystems compound
Further reflections on China's high-participation, open-first AI ecosystem.
May 12
•
Nathan Lambert
41
2
10
Notes from inside China's AI labs
Lessons from my trip to talk to most of the leading AI labs in China.
May 7
•
Nathan Lambert
326
38
39
The distillation panic
‘Distillation attacks’ is a horrible term for what is happening right now.
May 4
•
Nathan Lambert
84
1
8
April 2026
Reading today's open-closed performance gap
The complex factors that determine the single evaluation number so many focus on. Plus, how this changes in the future.
Apr 20
•
Nathan Lambert
44
3
5
My bets on open models, mid-2026
What I expect to come next and why, focused on the open-closed gap.
Apr 15
•
Nathan Lambert
118
30
11
What I’ve been building: ATOM Report, post-training course, finishing my book, and ongoing research
What I've been up to!
Apr 14
•
Nathan Lambert
54
5
4
The inevitable need for an open model consortium
And yes, I hate consortia too.
Apr 11
•
Nathan Lambert
79
8
11
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