01.AI

Yi 1.5 9B Chat

9B bilingual model with strong reasoning.

9B parametersyiapache-2.04K context5.46GB - 9.24GB VRAM

About This Model

The Yi 1.5 9B Chat model by 01.AI is a robust language model designed for generating high-quality text, particularly suited for conversational applications. With 9 billion parameters, it offers a balance between computational demands and performance, making it capable of producing coherent and contextually relevant responses. The model supports a context length of 4096 tokens, which is substantial for maintaining context in longer conversations or generating detailed content. It is licensed under the Apache-2.0 license, ensuring flexibility for both commercial and non-commercial use.

In its size class, the Yi 1.5 9B Chat model holds its own, offering efficient performance with a VRAM requirement ranging from 5.5 to 9.2 GB, depending on the quantization used. This makes it a practical choice for users with mid-range GPUs, as it doesn't require top-tier hardware to run effectively. Compared to larger models, it punches above its weight in terms of efficiency, providing a good trade-off between resource usage and output quality. Ideal for developers and hobbyists looking to deploy a chatbot or text generation system locally, this model is well-suited for those who need a powerful yet manageable solution. Realistic hardware requirements include a GPU with at least 6 GB of VRAM, making it accessible to a wide range of users.

Check Your Hardware

See which quantizations of Yi 1.5 9B Chat your hardware can run.

Quantization Options

QuantizationBitsFile SizeVRAM NeededRAM NeededQuality
Q4_K_M4.54.963 GB5.46 GB5.96 GB
85%
Q8_088.739 GB9.24 GB9.74 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 Yi 1.5 9B Chat?

Yi 1.5 9B Chat requires 5.46GB VRAM minimum with Q4_K_M quantization. For full precision, you need 9.24GB VRAM.

What is the best quantization for Yi 1.5 9B Chat?

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