openai/gpt-oss-20b

The openai/gpt-oss-20b is a 21 billion parameter open-weight model developed by OpenAI, designed for powerful reasoning, agentic tasks, and versatile developer use cases. It features configurable reasoning effort (low, medium, high) and provides full chain-of-thought access for debugging. Optimized for lower latency and specialized applications, this model supports agentic capabilities like function calling, web browsing, and Python code execution. It is fine-tunable and can run within 16GB of memory due to MXFP4 quantization.

Warm
Public
20B
FP8
32768
License: apache-2.0
Hugging Face

Popular Sampler Settings

Most commonly used values from Featherless users

temperature
This setting influences the sampling randomness. Lower values make the model more deterministic; higher values introduce randomness. Zero is greedy sampling.
top_p
This setting controls the cumulative probability of considered top tokens. Must be in (0, 1]. Set to 1 to consider all tokens.
top_k
This limits the number of top tokens to consider. Set to -1 to consider all tokens.
frequency_penalty
This setting penalizes new tokens based on their frequency in the generated text. Values > 0 encourage new tokens; < 0 encourages repetition.
presence_penalty
This setting penalizes new tokens based on their presence in the generated text so far. Values > 0 encourage new tokens; < 0 encourages repetition.
repetition_penalty
This setting penalizes new tokens based on their appearance in the prompt and generated text. Values > 1 encourage new tokens; < 1 encourages repetition.
min_p
This setting representing the minimum probability for a token to be considered relative to the most likely token. Must be in [0, 1]. Set to 0 to disable.