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Qwen3-4B-BaseUnsloth
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4B Params BF16 Open Weights Inference Available

unsloth/Qwen3-4B-Base is a 4.0 billion parameter causal language model developed by Qwen, part of the Qwen3 series. Pre-trained on 36 trillion tokens across 119 languages, it features an expanded, higher-quality corpus and architectural refinements like qk layernorm. This model excels in broad language modeling, general knowledge acquisition, and improved reasoning skills, with a context length of 32,768 tokens.

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Parameters:4BContext length:32kArchitecture:TransformerPrecision:BF16Quantized variants:AvailableLast updated:April 2025
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unsloth/Qwen3-4B-Base
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.