{"schema":"postcutoff/model@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/m/atlas-large-behavior-model/","md":"https://postcutoff.com/m/atlas-large-behavior-model/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"atlas-large-behavior-model","name":"Atlas Large Behavior Model (Boston Dynamics + TRI LBM)","org":"Boston Dynamics","family":"Large Behavior Models (TRI)","released":"2025-08-20","status":"current","type":"robotics","modality_in":["image","text"],"modality_out":["action"],"open_weights":false,"model_license":"proprietary","context_window":null,"max_output":null,"knowledge_cutoff":null,"pricing":null,"price_line":"Price not published","access":[{"provider":"Not available (internal research policy for Atlas)","url":"https://bostondynamics.com/blog/large-behavior-models-atlas-find-new-footing/"},{"provider":"TRI LBM Eval (open simulation benchmark, not the model)","url":"https://github.com/ToyotaResearchInstitute/lbm_eval"}],"capabilities":[{"name":"One language-conditioned policy for whole-body loco-manipulation","detail":"A single end-to-end policy maps images, proprioception and language to actions for the full 50-DoF Atlas at 30 Hz, combining stepping, crouching and center-of-mass shifts with dexterous manipulation in long-horizon tasks, replacing separate walking and manipulation controllers.","first":false,"discovered":"launch","source":"https://bostondynamics.com/blog/large-behavior-models-atlas-find-new-footing/"},{"name":"Diffusion Transformer with flow matching","detail":"450M-parameter Diffusion Transformer trained with a flow-matching objective, predicting 48-step action chunks (1.6 s); trained on Atlas teleop data, the Atlas Manipulation Test Stand, TRI's Ramen dataset and simulation co-training.","first":false,"discovered":"launch","source":"https://bostondynamics.com/blog/large-behavior-models-atlas-find-new-footing/"},{"name":"Inference-time speed-up","detail":"Policies can run 1.5-2x faster than the human demos at inference time without retraining by rescaling action timing.","first":false,"discovered":"launch","source":"https://bostondynamics.com/blog/large-behavior-models-atlas-find-new-footing/"},{"name":"Pretraining cuts task data by up to 80%","detail":"TRI's LBM study (~1,700 h of robot data, 1,800 real and 47,000+ sim rollouts) found pretrained LBMs need up to 80% less task-specific data.","first":false,"discovered":"launch","source":"https://toyotaresearchinstitute.github.io/lbm1/"}],"entry":"2026-01-05-boston-dynamics-atlas-production","notes":"Research collaboration announced Aug 2025 (Toyota release: https://newsroom.toyota.eu/ai-powered-robot-by-boston-dynamics-and-toyota-research-institute-takes-a-key-step-towards-general-purpose-humanoids/). The production electric Atlas (CES 2026) also integrates Google DeepMind foundation models (Gemini Robotics); Hyundai trains Atlas on parts logistics at its Georgia RMAC (2026-09-22). No public weights or API for the Atlas LBM. Exact announcement day (2025-08-20) is from press coverage dated 2025-08-20/21.","verified":null,"body_md":null,"page_url":"https://postcutoff.com/m/atlas-large-behavior-model/","standing":{"kind":"robotics","newer_count":23,"newer":[{"id":"praxis-1","name":"Praxis-1","org":"Runway","released":"2026-09-30","page_url":"https://postcutoff.com/m/praxis-1/"},{"id":"figure-helix-2-5","name":"Helix 2.5","org":"Figure AI","released":"2026-09-17","page_url":"https://postcutoff.com/m/figure-helix-2-5/"},{"id":"unifolm-wla-1-0","name":"UnifoLM-WLA-1.0","org":"Unitree Robotics","released":"2026-09-10","page_url":"https://postcutoff.com/m/unifolm-wla-1-0/"},{"id":"skild-s1","name":"Skild S1 (Skild Brain)","org":"Skild AI","released":"2026-08-25","page_url":"https://postcutoff.com/m/skild-s1/"},{"id":"generalist-gen-1-5","name":"Generalist GEN-1.5","org":"Generalist AI","released":"2026-08-19","page_url":"https://postcutoff.com/m/generalist-gen-1-5/"}],"before":null,"after":null,"weights":"closed","licence":"proprietary","licence_permissive":false,"summary":"Closed weights."}}