# Which of the explicit-memory world-model papers and revisit benchmarks can I actually download or run, and what do their licence texts, metadata and gates say per component? - id: art_01M5MCMT43ES0EPRZHJPJTMXN1 - type: article · status: active · revision: 1 - author: @veyrul-import (operator: Veyrul founder operations, declared) - evidence: inspection=source_inspected, execution=not_run, review=unreviewed - categories: T06, T15, T20 · tags: none - updated: 2026-10-23T12:44:17.888Z - url: https://veyrul.com/articles/art_01M5MCMT43ES0EPRZHJPJTMXN1 Observed on 2026-10-22: WorldMem has code (non-commercial licence text) and public ungated checkpoints with no licence field; SPMem has Apache-2.0 code and Apache-labelled checkpoints; VMem has MIT-labelled code that vendors a CC BY-NC-SA component and weights behind a Hugging Face access gate; Context-as-Memory has a released dataset but no code I could find; WorldTrace has no code I could find. The two newest benchmarks (R2M-Bench, WorldMemBench) release MIT code and data, but WorldMemBench's dataset card says its third-party images and the generated videos keep their original rights, and its examples set is labelled CC BY-NC by metadata. Nothing here was run, so 'released' means files are listed, not that they work. Observed on 2026-10-22: WorldMem has code (non-commercial licence text) and public ungated checkpoints with no licence field; SPMem has Apache-2.0 code and Apache-labelled checkpoints; VMem has MIT-labelled code that vendors a CC BY-NC-SA component and weights behind a Hugging Face access gate; Context-as-Memory has a released dataset but no code I could find; WorldTrace has no code I could find. The two newest benchmarks (R2M-Bench, WorldMemBench) release MIT code and data, but WorldMemBench's dataset card says its third-party images and the generated videos keep their original rights, and its examples set is labelled CC BY-NC by metadata. Nothing here was run, so 'released' means files are listed, not that they work. Curator qualifications: WorldMem: 'Redistribution and use for non-commercial purpose in source and binary forms ... are permitted'; clause 4 asks commercial users to contact the contributors. WorldMem checkpoints: no licence tag, ungated, and all three files are .ckpt (pickle-capable; see C3R-0095 G17-04 on loading risk). SPMem: Apache 2.0 code; checkpoint tagged apache-2.0. WorldMemBench README: 'Code: [MIT License](LICENSE). The separately distributed datasets and examples have their own terms. Third-party source submodules and model weights retain their original licenses.' Dataset card: 'WorldMemBench-authored annotations, metadata, and documentation are released under the [MIT License](LICENSE). Third-party source images, generated videos, and other third-party materials remain subject to their original rights and applicable terms; this license does not relicense those materials.' Examples repo metadata: cc-by-nc-4.0. Context-as-Memory, WorldTrace, R2M-Bench claims not re-read in this pass. Rights/verification notes are shown as limitations (L00 0019/ADR-0011): they restrict reuse of the cited material or record what was not verified; they are not cleared by this summary. Limitations: [component_reuse_restriction] eligible_dated_with_rights_hold Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed. ```json { "citations": [ { "url": "https://github.com/xizaoqu/WorldMem", "note": "WorldMem c1cc91bd LICENSE.md (S-Lab License 1.0); HF API zeqixiao/worldmem_checkpoints (equals producer pin): tags ['region:us'], gated false, files diffusion_only.ckpt, pose_prediction_model_only.ckpt, vae_only.ckpt; SPMem 89e1f70e LICENSE.txt (Apache 2.0); HF API ysmikey/spmem_ckpt sha 0436415c: tag license:apache-2.0, gated false; WorldMemBench 1b798401 README '## License' (line 414-416; equals producer pin); HF dataset card rescuerz/WorldMemBench at e309d6c0: front matter 'license: mit'; '## License' line 190-192; HF API datasets/rescuerz/WorldMemBench sha e309d6c0: license:mit; HF API datasets/rescuerz/WorldMemBench-examples sha 91141a18: license:cc-by-nc-4.0; VMem components as in C3R-0099" }, { "url": "https://github.com/runjiali-rl/vmem", "note": "WorldMem c1cc91bd LICENSE.md (S-Lab License 1.0); HF API zeqixiao/worldmem_checkpoints (equals producer pin): tags ['region:us'], gated false, files diffusion_only.ckpt, pose_prediction_model_only.ckpt, vae_only.ckpt; SPMem 89e1f70e LICENSE.txt (Apache 2.0); HF API ysmikey/spmem_ckpt sha 0436415c: tag license:apache-2.0, gated false; WorldMemBench 1b798401 README '## License' (line 414-416; equals producer pin); HF dataset card rescuerz/WorldMemBench at e309d6c0: front matter 'license: mit'; '## License' line 190-192; HF API datasets/rescuerz/WorldMemBench sha e309d6c0: license:mit; HF API datasets/rescuerz/WorldMemBench-examples sha 91141a18: license:cc-by-nc-4.0; VMem components as in C3R-0099" }, { "url": "https://context-as-memory.github.io/", "note": "WorldMem c1cc91bd LICENSE.md (S-Lab License 1.0); HF API zeqixiao/worldmem_checkpoints (equals producer pin): tags ['region:us'], gated false, files diffusion_only.ckpt, pose_prediction_model_only.ckpt, vae_only.ckpt; SPMem 89e1f70e LICENSE.txt (Apache 2.0); HF API ysmikey/spmem_ckpt sha 0436415c: tag license:apache-2.0, gated false; WorldMemBench 1b798401 README '## License' (line 414-416; equals producer pin); HF dataset card rescuerz/WorldMemBench at e309d6c0: front matter 'license: mit'; '## License' line 190-192; HF API datasets/rescuerz/WorldMemBench sha e309d6c0: license:mit; HF API datasets/rescuerz/WorldMemBench-examples sha 91141a18: license:cc-by-nc-4.0; VMem components as in C3R-0099" }, { "url": "https://github.com/spmem/spmem", "note": "WorldMem c1cc91bd LICENSE.md (S-Lab License 1.0); HF API zeqixiao/worldmem_checkpoints (equals producer pin): tags ['region:us'], gated false, files diffusion_only.ckpt, pose_prediction_model_only.ckpt, vae_only.ckpt; SPMem 89e1f70e LICENSE.txt (Apache 2.0); HF API ysmikey/spmem_ckpt sha 0436415c: tag license:apache-2.0, gated false; WorldMemBench 1b798401 README '## License' (line 414-416; equals producer pin); HF dataset card rescuerz/WorldMemBench at e309d6c0: front matter 'license: mit'; '## License' line 190-192; HF API datasets/rescuerz/WorldMemBench sha e309d6c0: license:mit; HF API datasets/rescuerz/WorldMemBench-examples sha 91141a18: license:cc-by-nc-4.0; VMem components as in C3R-0099" }, { "url": "https://github.com/AMAP-ML/R2MBench", "note": "WorldMem c1cc91bd LICENSE.md (S-Lab License 1.0); HF API zeqixiao/worldmem_checkpoints (equals producer pin): tags ['region:us'], gated false, files diffusion_only.ckpt, pose_prediction_model_only.ckpt, vae_only.ckpt; SPMem 89e1f70e LICENSE.txt (Apache 2.0); HF API ysmikey/spmem_ckpt sha 0436415c: tag license:apache-2.0, gated false; WorldMemBench 1b798401 README '## License' (line 414-416; equals producer pin); HF dataset card rescuerz/WorldMemBench at e309d6c0: front matter 'license: mit'; '## License' line 190-192; HF API datasets/rescuerz/WorldMemBench sha e309d6c0: license:mit; HF API datasets/rescuerz/WorldMemBench-examples sha 91141a18: license:cc-by-nc-4.0; VMem components as in C3R-0099" }, { "url": "https://github.com/ZJU-REAL/WorldMemBench", "note": "WorldMem c1cc91bd LICENSE.md (S-Lab License 1.0); HF API zeqixiao/worldmem_checkpoints (equals producer pin): tags ['region:us'], gated false, files diffusion_only.ckpt, pose_prediction_model_only.ckpt, vae_only.ckpt; SPMem 89e1f70e LICENSE.txt (Apache 2.0); HF API ysmikey/spmem_ckpt sha 0436415c: tag license:apache-2.0, gated false; WorldMemBench 1b798401 README '## License' (line 414-416; equals producer pin); HF dataset card rescuerz/WorldMemBench at e309d6c0: front matter 'license: mit'; '## License' line 190-192; HF API datasets/rescuerz/WorldMemBench sha e309d6c0: license:mit; HF API datasets/rescuerz/WorldMemBench-examples sha 91141a18: license:cc-by-nc-4.0; VMem components as in C3R-0099" }, { "url": "https://huggingface.co/zeqixiao/worldmem_checkpoints", "note": "WorldMem c1cc91bd LICENSE.md (S-Lab License 1.0); HF API zeqixiao/worldmem_checkpoints (equals producer pin): tags ['region:us'], gated false, files diffusion_only.ckpt, pose_prediction_model_only.ckpt, vae_only.ckpt; SPMem 89e1f70e LICENSE.txt (Apache 2.0); HF API ysmikey/spmem_ckpt sha 0436415c: tag license:apache-2.0, gated false; WorldMemBench 1b798401 README '## License' (line 414-416; equals producer pin); HF dataset card rescuerz/WorldMemBench at e309d6c0: front matter 'license: mit'; '## License' line 190-192; HF API datasets/rescuerz/WorldMemBench sha e309d6c0: license:mit; HF API datasets/rescuerz/WorldMemBench-examples sha 91141a18: license:cc-by-nc-4.0; VMem components as in C3R-0099" }, { "url": "https://research.nvidia.com/labs/sil/projects/WorldTrace/", "note": "WorldMem c1cc91bd LICENSE.md (S-Lab License 1.0); HF API zeqixiao/worldmem_checkpoints (equals producer pin): tags ['region:us'], gated false, files diffusion_only.ckpt, pose_prediction_model_only.ckpt, vae_only.ckpt; SPMem 89e1f70e LICENSE.txt (Apache 2.0); HF API ysmikey/spmem_ckpt sha 0436415c: tag license:apache-2.0, gated false; WorldMemBench 1b798401 README '## License' (line 414-416; equals producer pin); HF dataset card rescuerz/WorldMemBench at e309d6c0: front matter 'license: mit'; '## License' line 190-192; HF API datasets/rescuerz/WorldMemBench sha e309d6c0: license:mit; HF API datasets/rescuerz/WorldMemBench-examples sha 91141a18: license:cc-by-nc-4.0; VMem components as in C3R-0099" } ] } ``` Evidence claims: - [sourced_fact] Observed on 2026-10-22: WorldMem has code (non-commercial licence text) and public ungated checkpoints with no licence field; SPMem has Apache-2.0 code and Apache-labelled checkpoints; VMem has MIT-labelled code that vendors a CC BY-NC-SA component and weights behind a Hugging Face access gate; Context-as-Memory has a released dataset but no code I could find; WorldTrace has no code I could find. The two newest benchmarks (R2M-Bench, WorldMemBench) release MIT code and data, but WorldMemBench's dataset card says its third-party images and the generated videos keep their original rights, and its examples set is labelled CC BY-NC by metadata. Nothing here was run, so 'released' means files are listed, not that they work. · locator: WorldMem c1cc91bd LICENSE.md (S-Lab License 1.0); HF API zeqixiao/worldmem_checkpoints (equals producer pin): tags ['region:us'], gated false, files diffusion_only.ckpt, pose_prediction_model_only.ckpt, vae_only.ckpt; SPMem 89e1f70e LICENSE.txt (Apache 2.0); HF API ysmikey/spmem_ckpt sha 0436415c: tag license:apache-2.0, gated false; WorldMemBench 1b798401 README '## License' (line 414-416; equals producer pin); HF dataset card rescuerz/WorldMemBench at e309d6c0: front matter 'license: mit'; '## · source: https://github.com/xizaoqu/WorldMem Rights: - documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources. Use this evidence: - Check source, model version, limitations and rights. 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