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v0.3.66

Comfy-Org/ComfyUIv0.3.66Oct 21, 2025by github-actions[bot]

AI Summary

This release focuses on performance optimizations, including faster workflow cancellation and memory management improvements for AMD and NVIDIA hardware. It includes updates for Python 3.14 and the frontend, along with continued V3 schema conversions and fixes for API nodes.

Key Highlights

  • Faster workflow cancelling implementation.
  • Python 3.14 installation instructions updated.
  • API-nodes fixes: dynamic pricing, Veo3.1 model, and renaming `comfy_io` to `IO`.
  • AMD GPU workarounds for VAE memory usage on torch 2.9 and gfx942 support.

New Features

  • TemporalScoreRescaling node added.
  • Veo3.1 model support in API nodes.
  • Deprecated API alert feature.

Full Release Notes

## What's Changed
* Faster workflow cancelling. by @comfyanonymous in https://github.com/comfyanonymous/ComfyUI/pull/10301
* Python 3.14 instructions. by @comfyanonymous in https://github.com/comfyanonymous/ComfyUI/pull/10337
* api-nodes: fixed dynamic pricing format; rename comfy_io to IO by @bigcat88 in https://github.com/comfyanonymous/ComfyUI/pull/10336
* Bump frontend to 1.28.6 by @arjansingh in https://github.com/comfyanonymous/ComfyUI/pull/10345
* gfx942 doesn't support fp8 operations. by @comfyanonymous in https://github.com/comfyanonymous/ComfyUI/pull/10348
* Add TemporalScoreRescaling node by @chaObserv in https://github.com/comfyanonymous/ComfyUI/pull/10351
* feat(api-nodes): add Veo3.1 model by @bigcat88 in https://github.com/comfyanonymous/ComfyUI/pull/10357
* Latest pytorch stable is cu130 by @comfyanonymous in https://github.com/comfyanonymous/ComfyUI/pull/10361
* Fix order of inputs nested merge_nested_dicts by @Kosinkadink in https://github.com/comfyanonymous/ComfyUI/pull/10362
* refactor: Replace manual patches merging with merge_nested_dicts by @neverbiasu in https://github.com/comfyanonymous/ComfyUI/pull/10360
* Bump frontend to 1.28.7 by @arjansingh in https://github.com/comfyanonymous/ComfyUI/pull/10364
* feat: deprecated API alert by @LittleSound in https://github.com/comfyanonymous/ComfyUI/pull/10366
* fix(api-nodes): remove "veo2" model from Veo3 node by @bigcat88 in https://github.com/comfyanonymous/ComfyUI/pull/10372
* Workaround for nvidia issue where VAE uses 3x more memory on torch 2.9 by @comfyanonymous in https://github.com/comfyanonymous/ComfyUI/pull/10373
* workaround also works on cudnn 91200 by @comfyanonymous in https://github.com/comfyanonymous/ComfyUI/pull/10375
* Do batch_slice in EasyCache's apply_cache_diff by @Kosinkadink in https://github.com/comfyanonymous/ComfyUI/pull/10376
* execution: fold in dependency aware caching / Fix --cache-none with loops/lazy etc by @rattus128 in https://github.com/comfyanonymous/ComfyUI/pull/10368
* [V3] convert nodes_controlnet.py to V3 schema by @bigcat88 in https://github.com/comfyanonymous/ComfyUI/pull/10202
* Update Python 3.14 installation instructions by @comfyanonymous in https://github.com/comfyanonymous/ComfyUI/pull/10385
* Disable torch compiler for cast_bias_weight function by @comfyanonymous in https://github.com/comfyanonymous/ComfyUI/pull/10384
* Turn off cuda malloc by default when --fast autotune is turned on. by @comfyanonymous in https://github.com/comfyanonymous/ComfyUI/pull/10393
* Fix batch size above 1 giving bad output in chroma radiance. by @comfyanonymous in https://github.com/comfyanonymous/ComfyUI/pull/10394
* Speed up chroma radiance. by @comfyanonymous in https://github.com/comfyanonymous/ComfyUI/pull/10395
* Pytorch is stupid. by @comfyanonymous in https://github.com/comfyanonymous/ComfyUI/pull/10398
* Deprecation warning on unused files by @christian-byrne in https://github.com/comfyanonymous/ComfyUI/pull/10387
* Update template to 0.2.1 by @comfyui-wiki in https://github.com/comfyanonymous/ComfyUI/pull/10413
* Log message for cudnn disable on  AMD. by @comfyanonymous in https://github.com/comfyanonymous/ComfyUI/pull/10418
* Revert "execution: fold in dependency aware caching / Fix --cache-none with loops/lazy etc" by @comfyanonymous in https://github.com/comfyanonymous/ComfyUI/pull/10422

## New Contributors
* @neverbiasu made their first contribution in https://github.com/comfyanonymous/ComfyUI/pull/10360
* @LittleSound made their first contribution in https://github.com/comfyanonymous/ComfyUI/pull/10366

**Full Changelog**: https://github.com/comfyanonymous/ComfyUI/compare/v0.3.65...v0.3.66