Everything here is free and stays free — the format spec, the nodes, the workflows, the cartridges, the LoRAs. If it saved you a night of debugging (it contains several hundred of mine), tips keep the 5090 warm:<ul><li>☕ <a target="_blank" rel="ugc" href="https://ko-fi.com/joeygambino">Buy me a coffee on Ko-fi</a></li><li>💛 <a target="_blank" rel="ugc" href="https://github.com/sponsors/jlucasmcrell">Sponsor on GitHub</a></li><li>🔁 <a target="_blank" rel="ugc" href="https://liberapay.com/joeygambino">Liberapay</a> (recurring)</li><li>⚡ Or right here: the Civitai tip button on this page sends Buzz directly.</li></ul>LTX-2.3 CompanionVAE + Vocoder + Connectors9 GB instead of 43***Not a model on its own Nothing quantized***The ProblemIf you run an LTX-2.3 GGUF DiT on a 64 GB machine and ComfyUI dies while loading with <code>Windows fatal exception: access violation</code> — this is the fix.A GGUF carries only the transformer blocks. The loader still needs a <code>checkpoint_path</code> for everything else, and it materializes that WHOLE file in system RAM as owned copies — roughly 60 GB peak against a 43 GB bf16 checkpoint. On a 64 GB box that usually falls over, and it looks like a VRAM problem even though the GPU is idle.What's Inside — 9.02 GB, cut byte-for-byteEmbedding connectors + adaLN singlesThe DiT machinery GGUFs don't carry4.89 GBText embedding projectionKeeps voice and identity conditioning wired up2.31 GBVideo VAE1.45 GBVocoder0.26 GBAudio VAE0.11 GBThe Result~11 GBPeak system RAM60 GB → 11 GBBefore → AfterOutput is identical — nothing is quantized, and the config metadata rides along so the loader configures the transformer exactly as the full checkpoint would.UsagePut it wherever your checkpoints live. In <code>JoyEcho_ModelLoader</code>: your GGUF in <code>model_file</code>, this file in <code>checkpoint_path</code>. Nothing else changes.Pairing NoteCut from the e50 merge — the exact match for the e50 GGUF family. It loads with any LTX-2.3 GGUF, but the connectors and gate tensors differ between merge variants, so for a different checkpoint family, cut your own with the included one-command script (on the HuggingFace repo).Not a model on its own.There is no DiT in here — it is the other half of a GGUF.Also on HuggingFacejoeygambino/ltx23-gguf-vae-companion

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