ComfyUI Extension: Overtli Studio Suite

Authored by OvertliDS

Created 4 months ago

Updated 4 months ago

15 stars

Run ComfyUI workflows without the setup

No installs, no CUDA version roulette, no GPU sitting idle on your bill. Bring a workflow and run it in the browser.

Windows-first advanced suite for Pollinations, LM Studio, Copilot CLI, and OpenAI-compatible multi-engine workflows.

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Custom Nodes (0)

README

OVERTLI STUDIO LLM Suite

Windows-first ComfyUI custom nodes for local and cloud AI generation, featuring a unified advanced router for seamless multi-engine workflows.

🚀 Installation & Quick Start

Installation

Navigate to your ComfyUI custom nodes directory and clone this repository:

cd ComfyUI/custom_nodes/
git clone https://github.com/OvertliDS/overtli-studio-suite.git

Navigate into the cloned folder and install the required dependencies using your ComfyUI Python environment:
```
cd overtli-studio-suite
pip install -r requirements.txt
```
Restart ComfyUI.

Quick Start Workflow

You can find the nodes by simply searching for "Overtli".

Add the GZ_ProviderSettings node and save your keys or URLs once.
Add the GZ_AdvancedTextEnhancer or GZ_LLMTextEnhancer node.
Choose your provider and active_engine.
Connect optional IMAGE or AUDIO inputs when needed.
Execute and use the native output directly in your workflow.

Use With Existing ComfyUI Workflows (CLIP Text Encode)

You can use OVERTLI as a drop-in prompt enhancer without rebuilding your graph.

Add any text-capable OVERTLI node (for example GZ_TextEnhancer, GZ_LLMTextEnhancer, or GZ_AdvancedTextEnhancer with active_engine = text).
Connect the node's STRING output to your existing CLIP Text Encode node text input.
Keep the rest of your workflow unchanged (sampler, model, VAE, etc.).

This lets you enhance or rewrite any prompt while still using your current ComfyUI pipeline.

Example Workflow

For users who want a sample workflow with Flux2Klein 9B GGUF, use workflows/OvertliStudioSuite_x_Flux2Klein9B-GGUF.json from this repo.

✨ Core Capabilities

Unified Advanced Routing: Manage multi-engine workflows through a single, powerful provider node.
Native Media Contracts: Full support for standard ComfyUI output types.
- AUDIO for text-to-speech and text-to-music generation.
- VIDEO for video generation capabilities.
- The Advanced Router dynamically returns STRING + IMAGE + VIDEO + AUDIO.
Native Previews: Fully integrated with ComfyUI’s native image and text preview rendering.

🧩 Registered Nodes

🌐 Provider Coverage

✨ Pollinations.ai

Full support for text, image, video, text-to-speech, speech-to-text, and text-to-music.

🖥️ LM Studio

Local text generation with optional image context for vision-capable local models.

🤖 GitHub Copilot CLI

Local CLI-based text enhancement with optional image context.

🔌 OpenAI-Compatible APIs

Available through both:

GZ_OpenAICompatibleTextEnhancer (dedicated node)
GZ_AdvancedTextEnhancer with provider = openai_compatible

Supported engines:

text
image
video
text_to_speech
speech_to_text
text_to_music

Note: exact modality availability still depends on the target OpenAI-compatible provider and selected model. The suite now exposes these engines with explicit runtime validation and terminal-visible errors when a provider/model endpoint cannot satisfy a request.

🔑 Provider Setup & Authentication

The Overtli Studio Suite is designed to be as "zero-config" as possible, supporting cloud, local, and standard API protocols.

✨ Pollinations.ai (Cloud)

API Key: Visit enter.pollinations.ai to generate your key.

Setup: Enter your key into the GZ_ProviderSettings node or set the GZ_POLLINATIONS_API_KEY environment variable, as well as support in Pollinations nodes to enter api key directly.

Pricing: Free tagged models allow free generations, but pollen usage is determined based on your free plan tier within enter.pollinations.ai so aim to reach higher tiers for more free generations or top up using gems while waiting for your pollen to reset. Paid models are supported as well if gems have been purchased.

🤖 GitHub Copilot CLI (Cloud/Local Hybrid)

Auto-Detection: If you are already signed in via the GitHub CLI (gh auth login), Overtli will automatically detect your session and "just work."

Prerequisites: Requires an active Copilot subscription and the GitHub CLI installed (It will open a copilot-cli terminal silently by default for communication).

Vision/Image context: OVERTLI writes Comfy IMAGE inputs to temporary local files and references them with Copilot CLI @path attachment syntax so vision-capable models receive the actual image bytes.

Background behavior: Copilot auth recovery and vision-cache retry handling are managed automatically in the background so the node surface stays simple. With vision_enabled on, prior runtime vision-cache entries do not silently block new image attempts by default.

🖥️ LM Studio (Local)

Host: Defaults to http://localhost:1234.

Setup: Ensure LM Studio is running and the "Local Server" is started. No API key is required by default.

Vision: Support for vision-capable local models is integrated directly into the GZ_LLMTextEnhancer.

🔌 OpenAI-Compatible APIs (Custom)

Flexibility: Use any provider that supports the OpenAI standard (e.g., Groq, Together AI, LocalAI).

Setup: Requires a Base URL and API Key configured in the GZ_ProviderSettings node (or just use the GZ_AdvancedTextEnhancer or GZ_LLMTextEnhancer node).

🧠 Prompting & Output Contracts

The Composition Model

All primary routes follow the same strict sequence:

Custom Instructions
Selected Mode Preset
Raw Prompt (User Prompt)
Style Layers (style_preset_1..3 + additional_styles)

💡 Tip: The additional_styles input is socket-first (forceInput) and is designed to chain seamlessly from the GZ_StyleStackNode.

Quick Instruction Modes Overview

Instruction presets are grouped by task family and can be toggled on/off per route.

At-a-glance preset counts (current build):

Total instruction presets: 63 (excluding Off options)
Text: 14
Image: 24 (4 vision + 10 generation + 6 editing + 4 narrative)
Video: 11 (8 generation + 3 analysis)
TTS: 8
Text-to-Audio: 3
Speech-to-Text: 3
Text modes: examples include Enhance (expand a short idea into a richer prompt), Refine (tighten wording while preserving intent), and Translation Prompt (convert to generation-ready English).
Image modes: examples include Tags (comma-separated visual tags), Simple Description (single concise visual description), Concept Art (design-forward scene direction), and Upscale Image Prompt (detail-preserving enhancement guidance).
Video modes: examples include Cinematic Video Prompt (film-style motion direction), Loop Video Prompt (seamless repeating motion guidance), and Video Summary (chronological visual recap of footage).
TTS modes: examples include Voiceover Script (clean narration pacing for speech synthesis), Character Voice (expressive dialogue delivery), and SSML Enhancement (markup-driven timing and emphasis control).
Text-to-Audio modes: examples include Audio Prompt Enhance (clarify generation intent), Music Direction (genre/instrument/energy guidance), and Ambience and Foley (layered environmental sound design).
Speech-to-Text modes: examples include Clean Transcript (readability cleanup while preserving meaning), Punctuation and Casing (restore sentence structure), and Structured Notes (concise key points and actions).

If a mode is set to Off, the route relies on custom instructions + raw prompt + style layers.

Only enable ONE instruction group

Quick Style Layering Overview

Built-in style library: 656 presets (+ Off option)
Built-in style slots: up to 3 per primary node (style_preset_1..3).
Extended style stack: connect additional_styles from GZ_StyleStackNode for up to 7 extra styles.
Total style layers available: up to 10 (3 built-in + 7 stacked).

Style examples (brief):

Photograph (Real Life): grounded, natural realism with real lens/lighting behavior.
Cinematic Still: film-like framing, layered depth, and motivated key/fill/rim lighting.
Anime Illustration: expressive line work, controlled cel-shading, and clean silhouette readability.
Line Art (Clean): minimal contour-focused visuals with crisp outlines and low noise.
Concept Art: production-style world/design visualization with clear value hierarchy.

Output Contracts

⚙️ Settings and Precedence

Persistent settings are stored locally in:

ComfyUI/user/overtli_studio_settings.json

Resolution Precedence:

Runtime node input (Highest priority)
Environment variable
Persisted settings
Suite default (Lowest priority)

<details> <summary><b>🔧 Click to view useful Environment Variables</b></summary>

GZ_POLLINATIONS_API_KEY
GZ_POLLINATIONS_CHAT_TIMEOUT
GZ_POLLINATIONS_IMAGE_TIMEOUT
GZ_POLLINATIONS_VIDEO_TIMEOUT
GZ_POLLINATIONS_TTS_TIMEOUT
GZ_POLLINATIONS_STT_TIMEOUT
GZ_POLLINATIONS_AUDIO_TIMEOUT
GZ_LMSTUDIO_HOST
GZ_LMSTUDIO_PORT
GZ_LMSTUDIO_API_KEY
GZ_COPILOT_EXECUTABLE
GZ_COPILOT_MODEL
GZ_COPILOT_TIMEOUT
GZ_OPENAI_COMPAT_BASE_URL
GZ_OPENAI_COMPAT_API_KEY
GZ_OPENAI_COMPAT_MODEL
GZ_LOG_LEVEL
GZ_TEMP_DIR

</details>

🧯 Troubleshooting

OpenAI-compatible route does not appear in the node list You should see both:

GZ_OpenAICompatibleTextEnhancer (dedicated node), and
GZ_AdvancedTextEnhancer with provider = openai_compatible.

If they are missing, restart ComfyUI and confirm this custom node folder is loaded without import errors.

STT fails with missing input GZ_SpeechToText requires an AUDIO input connection to function.

Video generation blocks the UI That is expected for synchronous provider-side video generation. The UI will resume once rendering is complete.

LM Studio/Ollama does not return models Make sure LM Studio/Ollama is running and exposing its API endpoint correctly.

Copilot route fails unexpectedly Check that:

GitHub Copilot CLI is installed and reachable.
The configured executable path is correct if adjusted manually.
Your authentication session is valid.
Environment token overrides are not conflicting.

🤝 Support & Funding

If this suite accelerates your workflow, consider supporting the continued development of Overtli tools and other projects using the GitHub Sponsor link on the repository sidebar.

📄 License

MIT. See LICENSE.

Run ComfyUI workflows without the setup

No installs, no CUDA version roulette, no GPU sitting idle on your bill. Bring a workflow and run it in the browser.

Learn more