Symbiotica Wavespeed Nano Banana 2 Edit

The text-to-image sibling of this node gets you a new Nano Banana 2 image from a prompt. This one edits ones you already have. Give it one or more images plus a prompt, and Google's Gemini 3.1 Flash image model rewrites them to match - which is exactly what the Symbiotica template pipeline needs, because that pipeline produces template sheets and region prompts and then asks a model to fill the regions in. Symbiotica Template Prompt builds the numbered per-region edit prompt; this is the node that executes it.

Like its siblings, it's a Wavespeed API wrapper - submit, poll, return. Endpoint: google/nano-banana-2/edit. Closed model, per-call billing, prompt and images leave your machine. Same caveats, same appeal.

The inputs that matter

• images - the IMAGE(s) to edit. Up to 14, which is Nano Banana 2's ceiling; a bigger batch is truncated with a console note rather than rejected. Wire a single sheet in, or a batch for multi-reference edits.
• prompt - what to change. Non-empty, or it raises.
• aspect_ratio - auto or the same 15 ratios as the text-to-image node.
• resolution - 0.5k, 1k (default), 2k, 4k.
• enable_web_search / enable_image_search - grounding toggles, and again mutually exclusive: both on is an immediate error.
• output_format - png (default) or jpeg.
• api_key - optional; falls back to Settings → Symbiotica or WAVESPEED_API_KEY.
• timeout - poll timeout, 300s default.

Outputs

• image - the edited result as an IMAGE tensor.
• task_id - the Wavespeed job id.
• result_url - hosted URL of the full-size result.

Install

Part of the Symbiotica pack:

cd ComfyUI/custom_nodes
git clone https://github.com/symbiotica-ai/comfyui-nodes.git symbiotica
pip install -r symbiotica/requirements.txt

Restart ComfyUI, or ComfyUI Manager → search Symbiotica → install. Then a Wavespeed key in Settings → Symbiotica (or WAVESPEED_API_KEY). No models download for this node.

Common issues

Mostly the family complaints: the both-search-toggles error, the timeout on big batches or 4K, and a task-failed error whose real cause is in the included response body. Two edit-specific gotchas worth knowing:

• Truncation at 14 images - it happens silently (well, with a console note). If you fed a 20-frame batch expecting all of it, you got the first 14. For template work, feed the sheets, not the raw folders.
• The edit prompt is the whole job - Nano Banana 2 is a Gemini image model, so it's a strong instruction-follower but also applies Google's content filter. If a template prompt gets refused, that's the vendor's filter, not the node; there's nothing to patch locally.

If you're running the template pipeline end to end: Template Editor → Template Prompt → this node, and you've got a fill-the-regions edit loop. The Fast edit variant below is the same thing with fewer knobs and a shorter default timeout.