What are the hardware requirements for Qwen3 4B 2509 1200step?

Qwen3 4B 2509 1200step requires approximately 8.1 GB of VRAM and supports a context window of 256K tokens. Quantized variants may run on less VRAM; see the Quantized Models section on this page.

Who developed Qwen3 4B 2509 1200step and how large is it?

Qwen3 4B 2509 1200step is developed by fireworks1231, a model with 4b parameters. The model is published as open weights on Hugging Face and indexed on LLM Explorer with full benchmark history.

Where can I download or evaluate Qwen3 4B 2509 1200step?

Qwen3 4B 2509 1200step is hosted on Hugging Face and linked from this page. LLM Explorer also lists quantized variants and similar alternatives if available.

Qwen3 4B 2509 1200step by fireworks1231 — VRAM 8.1GB, 256K context

Name: Qwen3 4B 2509 1200step
Author: fireworks1231

Qwen3 4B 2509 1200step is an open-source language model by fireworks1231. Features: 4b LLM, VRAM: 8.1GB, Context: 256K, License: apache-2.0, LLM Explorer Score: 0.2.

Base model:finetune:unsloth/qw... Base model:unsloth/qwen3-4b-th... Conversational En Endpoints compatible Qwen3 Region:us Safetensors Sharded Tensorflow Unsloth

Model Card on HF 🤗: https://huggingface.co/fireworks1231/qwen3-4b-2509-1200step

Qwen3 4B 2509 1200step Parameters and Internals

LLM Name	Qwen3 4B 2509 1200step
Repository 🤗	https://huggingface.co/fireworks1231/qwen3-4b-2509-1200step
Base Model(s)	Qwen3 4B Thinking 2507 unsloth/Qwen3-4B-Thinking-2507
Model Size	4b
Required VRAM	8.1 GB
Updated	2026-07-12
Maintainer	fireworks1231
Model Type	qwen3
Model Files	5.0 GB: 1-of-2 3.1 GB: 2-of-2
Supported Languages	en
Model Architecture	Qwen3ForCausalLM
License	apache-2.0
Context Length	262144
Model Max Length	262144
Transformers Version	4.56.1
Tokenizer Class	Qwen2Tokenizer
Padding Token	<\|vision_pad\|>
Vocabulary Size	151936
Errors	replace

Rank the Qwen3 4B 2509 1200step capabilities

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Instruction Following and Task Automation
Factuality and Completeness of Knowledge
Censorship and Alignment
Data Analysis and Insight Generation
Text Generation
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Multi-Language Support and Translation

Best Alternatives to Qwen3 4B 2509 1200step

Best Alternatives	Context / RAM	Downloads	Likes
Fable Traces	256K / 8.1 GB	5530	209
FastContext 1.0 4B SFT	256K / 8.1 GB	5735	357
Qwen3 4B Instruct 2507	256K / 8.1 GB	3109972	911
GRPO 4 70	256K / 8.1 GB	5	0
Lightning 4B	256K / 8.1 GB	13	6
FastContext 1.0 4B RL	256K / 8.1 GB	4559	61
Qwen3 4B Thinking 2507	256K / 8.1 GB	291023	606
Qwen3 4B Instruct 2507 FP8	256K / 5.2 GB	1100744	78
Typhoon2.5 Qwen3 4B	256K / 8 GB	489877	6
Neuron 4B Instruct	256K / 8.1 GB	313	1

Note: green Score (e.g. "73.2") means that the model is better than fireworks1231/qwen3-4b-2509-1200step.