janhq/Jan-v1-4B

Jan-v1-4B is a 4 billion parameter agentic language model developed by janhq, based on the Qwen3-4B-thinking architecture with a 40960 token context length. It is designed for enhanced reasoning and problem-solving within the Jan App, demonstrating significant performance gains in factual question answering with 91.1% accuracy on SimpleQA. This model is optimized for complex agentic tasks and tool utilization.

Warm
Public
4B
BF16
40960
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.