wan / v2.5 / fal / image-to-video

Wan 2.5 is the point where Alibaba's Wan went closed - no open weights ever shipped for it. Which makes this node the only way most people will ever touch it: a cloud recipe in the official civitai-comfy-nodes pack that runs Wan 2.5 image-to-video on fal's fleet through Civitai's Orchestration API. First frame in, native VIDEO out, billed in Buzz.

The honest context: Wan 2.5 was widely read as a modest step up from the open 2.2 - real but not transformative - and the community's mood toward the closed Wans soured as 2.6 and 2.7 underwhelmed. This node's job is to give you 2.5's improvements without asking you to defend Alibaba's open-weight decision. And it gets one thing the older Wan nodes don't: 1080p.

The inputs that matter

prompt and cfg_scale (default 4) are required. Then:

• source_image / images - your starting frame. The core of the i2v node.
• resolution - 480p, 720p, or 1080p (default 1080p). This is the headline upgrade over the fal-hosted 2.1/2.2 nodes, which cap at 720p.
• aspect_ratio - 16:9, 9:16, or 1:1 (default 16:9). Note it's a smaller list than 2.2's fal nodes.
• enable_prompt_expansion - on by default here (2.2's fal nodes default it off). Falcon-side prompt rewriting is the house style for 2.5; flip it off if you've written exact language.
• negative_prompt - steering.
• loras - CIVITAI_LORAS socket; trigger words go in prompt.
• duration 1–30s (default 5), frame_rate 24, steps 10–50, seed, api_config.

Notice what's not here: no shift, no use_turbo, no interpolator_model, no enable_safety_checker. 2.5's fal tier is a simpler interface than 2.2's - you get resolution, ratio, prompt expansion, and a negative prompt. If you want the dials, that's the 2.2 nodes.

Outputs

Standard pack trio: video (VIDEO) into a Save Video / preview node, workflow_id (STRING) for the Civitai sidebar, raw_json (STRING) for response and cost.

Install and auth

One-time, pack-wide. ComfyUI Manager → search Civitai Comfy Nodes → install, restart:

cd ComfyUI/custom_nodes
git clone https://github.com/civitai/civitai-comfy-nodes.git
pip install -r civitai-comfy-nodes/requirements.txt   # just `requests`

Auth: Civitai Auth node, CIVITAI_API_TOKEN (headless), or sidebar sign-in.

Troubleshooting and takes

• 1080p is the reason to pick this over 2.2. If you don't need it, Wan 2.2 via fal is open-weights, cheaper, and at least as well-loved. 2.5's edge is resolution and a small quality bump, not a new league.
• Prompt expansion defaults on. If output ignores your exact wording, that's the feature; turn enable_prompt_expansion off.
• Closed model, closed filter. No local abliteration exists for 2.5 - Alibaba's moderation applies server-side. A refusal is the model, not the node.
• Slow / timeout. Pack launched June 2026 during Civitai's GPU crunch; long queues and timeouts were the top complaints, and 1080p makes it worse. Default timeout 30 min - raise via Civitai Auth timeout_minutes or CIVITAI_COMFY_TIMEOUT.
• Early preview. Generated nodes "may change without notice."

Reach for this when you specifically want Wan 2.5 at 1080p on a first frame and have accepted you're paying per clip for a model you can't download. The text-to-video sibling is the same recipe without the anchor image.