Expert attention map

The Who's Who of AI

What credible people across AI noticed, why it matters, and where the field is converging or disagreeing.

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Posts are grouped by conversation and tone. Select a lens to filter the stream; these are never permanent labels on people.

Questions & unknowns Research & technical analysis
1 live reaction map in this view Jump to the evidence ↓
Multiple readings Introducing Beam: Reflection’s 501B open-weight model — Reflection Research & technical analysis · 2 attributable reactions
Showing signals surfaced by Marc Lanctot ×
Most important

The developments commanding sustained expert attention

One card per development. Sources are clustered; reaction bundles describe these posts, never the people behind them.

Established AI research Research 8d ago
⚡ 159 h early
scalable decision-making imperfect information paper

Scalable decision-making for games of imperfect information - Nature

3 experts across 3 network communities independently surfaced this.

3 experts 3 communities 1 sources clustered
Eugene Vinitsky Marc Lanctot ae

“Hey reach out we have a solution to make sure you never lose to your fifth grader again www.nature.com/articles/s41...”

Primary source nature.com ↗
Established Models & releases Release 15d ago
Reflection Beam 501B model launch

Introducing Beam: Reflection’s 501B open-weight model — Reflection

4 experts across 4 network communities independently surfaced this.

4 experts 4 communities 1 sources clustered
Marc Lanctot Ramon Astudillo Tim Kellogg Sung Kim
How the network is reacting Experts are approaching this through 2 distinct lenses.
Multiple readings

Research & technical analysis

1 expert

Evidence, methods and technical implications.

“Reflection AI's Beam: a highly efficient agentic open model with 501B total parameters and 23B active. - Frontier reasoning efficiency - Advances the Western open frontier on coding & agentic tasks - Trained end-to-end from scratch Full weights release this…”

Questions & unknowns

1 expert

What remains unresolved or contested.

“Its interesting that Mistral went for 1T while Reflection went for 0.5T. RL is becoming king. I wonder how the pre-training vs RL post-training napkin math looks like reflection.ai/blog/introdu...”

2 experts discussed this · 2 posts
Sung Kim: Reflection AI's Beam: a highly efficient agentic open model with 501B total parameters and 23B active. - Frontier reasoning efficiency - Advances the Western open frontier on coding & agentic tasks…
Al Merose: I can’t wait to see how Marin’s model stacks up when it’s fully cooked. It has a similar parameter makeup, and the entire dev process is fully open source. bsky.app/profile/open...
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Primary source reflection.ai ↗
Established Models & releases Release 7d ago
⚡ 8 h early
Google Gemini 4 Argon model release

Gemini 4 Argon: Built to solve your hardest problems

2 directory members surfaced this signal.

2 experts 1 community 1 sources clustered
Marc Lanctot Gus

“Gemini 4 Argon is out. We had an engineer pair with the model on our Gemma stack to hunt down bottlenecks, helping us find real performance improvements and ship upstream vLLM speedups in days. https://blog.google/innovation-and-ai/models-and-research/gemin…”

Primary source blog.google ↗
Debates gaining attention

What experts are discussing without an anchoring article

3 experts · 5 posts · 16d ago
Marc Lanctot Christian Wolf David Picard
Reaction converging Research & technical analysis · 3
David Picard: 6 papers to review for ICLR. Fair game. It's a lot, but I understand I have to contribute, sure. But 16 days to do it is just bad. I won't be able to deliver the best review I can do in such a shor…
Christian Wolf: I have only 3 but now I receive invites from ACs to receive additional papers.... ?!?
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3 experts · 3 posts · 5d ago
Marc Lanctot Andres Guadamuz Max Woolf
Max Woolf: I regret having praised 404 in the past this is an embarrassing attempt to join in on a dogpile, and they should be ashamed that they're publicly acting like this for an organisation with a humanis…
Marc Lanctot: Ok so it's not just me..I was sure I had more positive memories of this outlet as well. When I read the Character AI bankrupty piece from yesterday, it def gave major sleazy tabloid vibes... "Enshi…
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