H2O.ai

Danube 3 500M

Ultra-tiny 500M model. Even smaller than SmolLM. Runs anywhere.

0.5B parametersdanubeapache-2.08K context0.8GB - 1.01GB VRAM

About This Model

The Danube 3 500M is a lightweight language model developed by H2O.ai, designed for efficient local deployment with a modest 0.5 billion parameters. This model excels in generating coherent and contextually relevant text, making it suitable for tasks such as content creation, chatbot responses, and summarization. With a context length of 8192 tokens, it can handle longer inputs and outputs, which is particularly useful for generating detailed articles or maintaining context in extended conversations. The Apache 2.0 license ensures that it is freely available for both personal and commercial use, adding to its appeal.

In its size class, the Danube 3 500M punches well above its weight. Despite its relatively small parameter count, it delivers impressive performance, often matching or exceeding the capabilities of larger models when it comes to efficiency and speed. The available quantizations, including Q4_K_M and Q8_0, further enhance its efficiency, allowing it to run smoothly on hardware with limited resources. Users can expect it to operate effectively on systems with as little as 0.8 to 1.0 GB of VRAM, making it an excellent choice for those with mid-range or older hardware. This model is ideal for developers, content creators, and businesses looking for a balance between performance and resource consumption, ensuring that high-quality text generation is accessible even on less powerful devices.

Check Your Hardware

See which quantizations of Danube 3 500M your hardware can run.

Quantization Options

QuantizationBitsFile SizeVRAM NeededRAM NeededQuality
Q4_K_M4.50.296 GB0.8 GB1.3 GB
85%
Q8_080.509 GB1.01 GB1.51 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 Danube 3 500M?

Danube 3 500M requires 0.8GB VRAM minimum with Q4_K_M quantization. For full precision, you need 1.01GB VRAM.

What is the best quantization for Danube 3 500M?

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