Stability AI

StableLM Zephyr 3B

Compact 3B model from Stability AI. Good chat quality for its size.

3B parametersstablelmother4K context2.09GB - 3.27GB VRAM

About This Model

StableLM Zephyr 3B is a 3-billion parameter language model developed by Stability AI, designed for efficient local deployment. This model excels in generating coherent and contextually relevant text, making it suitable for a wide range of applications such as content creation, chatbots, and natural language understanding tasks. With a context length of 4096 tokens, it can handle longer sequences of text, which is beneficial for tasks requiring a deeper understanding of context, such as summarization or dialogue generation.

In its size class, StableLM Zephyr 3B holds its own, offering a balance between performance and resource efficiency. It is particularly notable for its ability to run on hardware with limited VRAM, requiring only 2.1–3.3 GB, which makes it accessible for users with mid-range GPUs. The available quantizations, Q4_K_M and Q8_0, further enhance its efficiency, allowing it to run smoothly on less powerful systems without significant loss of quality. This model is ideal for developers and enthusiasts who need a capable language model but have constraints on computational resources. Realistic hardware for running this model includes modern laptops and desktops with integrated or entry-level dedicated GPUs, making it a versatile choice for both personal and small-scale professional projects.

Check Your Hardware

See which quantizations of StableLM Zephyr 3B your hardware can run.

Quantization Options

QuantizationBitsFile SizeVRAM NeededRAM NeededQuality
Q4_K_M4.51.591 GB2.09 GB2.59 GB
85%
Q8_082.769 GB3.27 GB3.77 GB
98%

See It In Action

Real model outputs generated via RunThisModel.com — watch responses stream in real time.

Llama 3.3 70B responding...

Outputs generated by real AI models via RunThisModel.com. Generation speed shown is from cloud inference. Local speeds vary by hardware — check your device.

Frequently Asked Questions

How much VRAM do I need to run StableLM Zephyr 3B?

StableLM Zephyr 3B requires 2.09GB VRAM minimum with Q4_K_M quantization. For full precision, you need 3.27GB VRAM.

What is the best quantization for StableLM Zephyr 3B?

Q4_K_M offers the best balance of quality and VRAM usage. Q8_0 is near-lossless if you have enough VRAM.