feat(api-nodes-xAI): updated models and pricing

[bigcat88]

Summary of changes:

• Added grok-imagine-image-pro to image generation and image edit nodes
• Added grok-imagine-image and grok-imagine-video (non-beta) to all model dropdowns
• Added 2K resolution for Image generation/edit nodes
• Allow passing up to 3 images for GrokImageEdit node when grok-imagine-image is used
• Added aspect_ratio widget to GrokImageEdit node
• Added price_extractor for actual cost tracking
• Updated price badges

API Node PR Checklist

Scope

• Is API Node Change

Pricing & Billing

• Need pricing update
• No pricing update

If Need pricing update:

• Metronome rate cards updated
• Auto‑billing tests updated and passing

QA

• QA done
• QA not required

Comms

• Informed Kosinkadink

[coderabbitai]

📝 Walkthrough

Walkthrough

This pull request modifies Grok API node implementations to add support for expanded parameters and multi-image handling. Changes include a new _extract_grok_price() helper function for price derivation, expanded model options across image and video nodes, new resolution and aspect_ratio input parameters, multi-image support in image edit operations, and updated validation logic that enforces different image count constraints based on model type. Execution signatures and API payloads were updated accordingly, along with pricing calculations to reflect these configuration changes.

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically summarizes the main changes: adding new Grok models and updating pricing logic for xAI API nodes.
Description check	✅ Passed	The pull request description clearly outlines all changes made: new model options, resolution support, multi-image handling, aspect_ratio widget, price_extractor implementation, and updated price badges. It directly matches the changeset.

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@comfy_api_nodes/nodes_grok.py`:
- Around line 244-252: The current branching allows up to 3 images for any
non-pro model which inadvertently includes "grok-imagine-image-beta"; change the
second condition so the 3-image limit only applies when model ==
"grok-imagine-image" (i.e. replace the elif guard with something like: elif
model == "grok-imagine-image" and get_number_of_images(image) > 3: raise
ValueError("A maximum of 3 input images is supported.")); keep the existing
single-image pro check (model == "grok-imagine-image-pro") and leave the
aspect_ratio/single-image validation as-is.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: c2c7ab37-e89f-4b5b-821a-dced5a65a321

📥 Commits

Reviewing files that changed from the base of the PR and between eb01173 and 59901d7.

⛔ Files ignored due to path filters (1)

• comfy_api_nodes/apis/grok.py is excluded by !comfy_api_nodes/apis/**

📒 Files selected for processing (1)

• comfy_api_nodes/nodes_grok.py