[Partner Nodes] add ByteDance Seed LLM node

[bigcat88]

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 PR adds a new ByteDance Seed 2.0 text generation node to ComfyUI. The module defines model metadata and API configuration, implements dynamic input UI for multimodal context (images and videos), and builds the request to the BytePlus endpoint with token-based pricing calculation. The execute method validates inputs, constructs content blocks from uploaded media, calls the remote API, validates responses for errors and refusals, extracts assistant text, and returns the result. An extension class registers the node for loading.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 22.22% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically describes the main change: adding a ByteDance Seed LLM node to the partner nodes collection.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description check	✅ Passed	The PR description is a checklist format related to API node changes, pricing updates, QA, and communications—directly relevant to the changeset which adds a new ByteDance Seed LLM node with pricing support.

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[coderabbitai]

Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@comfy_api_nodes/nodes_bytedance_llm.py`:
- Around line 223-225: The code directly indexes model["model"] and
model["temperature"] and then looks up SEED_MODELS[model_label], which can raise
KeyError on malformed payloads; update the logic in the handler that uses
model_label/temperature (the variables model_label, temperature, model_id and
the SEED_MODELS lookup) to first validate that the keys "model" and
"temperature" exist in the incoming model dict and that model_label is present
in SEED_MODELS, and if any check fails raise a clear ValueError (e.g. "missing
'model' key" or "unsupported model: <label>") so downstream error handling is
predictable.
- Around line 193-201: The PriceBadge token-rate literals for the "mini" and
"lite" branches are out of sync with the runtime constant
_SEED_PRICES_PER_MILLION; update these hardcoded usd arrays (the branch that
produces "type": "list_usd") to derive per-1K-token values from
_SEED_PRICES_PER_MILLION instead of using the current literals so UI hints match
runtime pricing. Locate the conditional branches that check $contains($m,
"mini") and $contains($m, "lite") in comfy_api_nodes/nodes_bytedance_llm.py and
replace the fixed usd arrays with values computed from _SEED_PRICES_PER_MILLION
(divide the per-million price by 1000) for both lower and upper bounds, keeping
the existing format object intact.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 04856ac and aa2c6a8.

⛔ Files ignored due to path filters (1)

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

📒 Files selected for processing (1)

• comfy_api_nodes/nodes_bytedance_llm.py