ComfyUI v0.39.0 adds FLUX 3 Image, Sonnet 5.5 and Ideogram 4.5 partner nodes plus explicit offline controls

What changed

ComfyOrg released ComfyUI v0.39.0 at 22:49:43 UTC on October 5, which is 06:49 on October 6 in Beijing. The stable release adds partner nodes for Anthropic Sonnet 5.5, Ideogram 4.5, HeyGen Video 1.0, Black Forest Labs FLUX 3 Image, Grok Imagine Video 1.5 Lite, and ElevenLabs v4/v4 Turbo. It also introduces explicit --offline and --disable-partner-nodes controls while deprecating --disable-api-nodes, improves video and 16-bit EXR output, refines asset scanning and lock behavior, and fixes issues around MiniMax-H3, Qwen-Image-2.1 and integrated GPUs. This entry records the ComfyUI release itself, not a claim that every integrated external model first launched on October 6.