---
title: "Gpt Oss 20b Nvfp4 in ComfyUI"
description: "Gpt Oss 20b Nvfp4 is a text encoder that converts prompts into embeddings used to guide generation."
canonical: https://comfy.org/p/supported-models/gpt-oss-20b-nvfp4
lang: en
index: https://comfy.org/llms.txt
---

# Gpt Oss 20b Nvfp4 in ComfyUI

Gpt Oss 20b Nvfp4 is a text encoder that converts prompts into embeddings used to guide generation. You can run it locally in ComfyUI with full control over every parameter, or access it through Comfy Cloud. ComfyUI's node-based workflow editor lets you connect Gpt Oss 20b Nvfp4 with ControlNets, LoRAs, upscalers, and custom nodes to build any pipeline you need. There are 2 community workflow templates using Gpt Oss 20b Nvfp4 on Comfy Workflows, ready to load and customize.

## Facts

- Type: Text encoder
- Pricing: free to run locally on your own hardware; on Comfy Cloud it meters as GPU time at the published Cloud GPU rate: https://docs.comfy.org/tutorials/partner-nodes/pricing#cloud-gpu
- Community workflow templates: 2
- Weights: https://huggingface.co/Comfy-Org/Lens/resolve/main/text_encoders/gpt_oss_20b_nvfp4.safetensors
- Tutorial: https://docs.comfy.org/tutorials/image/lens/lens

## How to run Gpt Oss 20b Nvfp4

1. Locally in ComfyUI — open source, free on your own hardware: https://comfy.org/download
2. On Comfy Cloud — hosted GPUs, every parameter still exposed: https://cloud.comfy.org
3. Start from a community workflow template and adjust it node by node: https://www.comfy.org/workflows
4. From your own application with the Comfy SDKs (Python and TypeScript, beta): https://docs.comfy.org/development/api-development/sdks.md
5. From a terminal or a coding agent with Comfy CLI, which runs workflows on Comfy Cloud or a local ComfyUI: https://docs.comfy.org/agent-tools/cli.md
6. From Claude Code, Cursor, or Codex over Comfy MCP at https://cloud.comfy.org/mcp: https://docs.comfy.org/agent-tools/mcp.md

This page as HTML: https://comfy.org/p/supported-models/gpt-oss-20b-nvfp4
Full model catalog: https://comfy.org/p/supported-models/llms.txt