Research
Jonas is a senior contributor in the world-models axis and the co-PI on the CLD result. He spent five years working on Bayesian operator learning at Max Planck before turning to neural compositional dynamics — a turn he describes as 'the same problem, finally with enough scale to be seen clearly.'
He is the strongest internal advocate for what he calls the unification bet: that perception and prediction are best treated as a single learning objective rather than two. The lab's 70k-environment study is partly his argument cashed out; he expects to follow it with a multi-modal extension at multi-billion-parameter scale.
Jonas commutes between Berlin and the Bay Area anchor on a six-week rotation. He maintains a personal monorepo of operator-learning baselines that several other cells now use; the lab credits him in CHANGELOG entries.
Background
Ph.D. machine learning, TU Munich, 2015. Postdoc at Max Planck Institute for Intelligent Systems (Tübingen) 2015-2017.
Prior to alphabell: Max Planck IS; Volterra Cognition; OpenMind Research.
Selected publications
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Aug 2025 · ab-compositional-Compositional Latent Dynamics for Long-Horizon World ModellingJonas Bremer, Sasha Petrov, Felicity Anjali Sandirasegaram, Tomoko Niwa
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Jul 2025 · ab-embodied-pretrEmbodied Pretraining via Cell-Operated Simulation: a 70k-environment studyLin Hao, Dimitri Yelchaninov, Sera Wijewardene, Ananya Mukherjee
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Dec 2024 · ab-counterfactualCounterfactual Rollouts for Planning: a 30-day deployment studySasha Petrov, Maya Quesada, Bilal Hossain
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May 2025 · ab-mechanistic-ciMechanistic Circuit Analysis at Frontier Scale: cells as a unit of interpretabilityJiang Yifei, Nico Almgren, Karima Belkadi, Hester Vandekerckhove
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Sep 2024 · ab-interpretabiliInterpretability Cell Pairing: how every dual-use capability run gets a watchful siblingKarima Belkadi, Hester Vandekerckhove, Yuki Cho
Recent talks
- Latent dynamics — the discrete-operator bet, ICLR 2024
- Predict and perceive, MIT CBMM 2024
- What world models cannot yet do, EurIPS 2025
Jonas is currently part of node-cell voronoi-19, working under the World models research axis. The cell is open to substantive correspondence from researchers working on adjacent problems; route requests through voronoi-19@alphabell.com or directly to Jonas at jonas-bremer@alphabell.com.
Contact
- EMAIL
jonas-bremer@alphabell.com - ORCID
0000-7802-4570-0670 - X
@jonasbremer - BLUESKY
jonas-bremer.bsky.social - GITHUB
@jonasbremer
Cross-references