Ollama Library · llama
Can I run openchat?
A family of open-source models trained on a wide variety of data, surpassing ChatGPT on various benchmarks. Updated to version 3.5-0106.
7B parameters8K contexttextApache License18 builds
openchat system requirements
Memory needed at 4K context, counting model weights, KV cache, compute buffers and runtime overhead. Download sizes come from the official Ollama registry.
| Build | Quantization | Download | Memory needed |
|---|---|---|---|
| openchat:7b-v3.5-q4_0 | Q4_0 | 3.8 GB | ~5.9 GB(est.) |
| openchat:7b | Q4_0 | 3.8 GB | ~5.9 GB(est.) |
| openchat:7b-v3.5-1210-q4_0 | Q4_0 | 3.8 GB | ~5.9 GB(est.) |
| openchat:7b-v3.5-q4_K_M | Q4_K_M | 4.1 GB | ~6.2 GB(est.) |
| openchat:7b-v3.5-1210-q4_K_M | Q4_K_M | 4.1 GB | ~6.2 GB(est.) |
| openchat:7b-v3.5-0106-q4_K_M | Q4_K_M | 4.1 GB | ~6.2 GB(est.) |
| openchat:7b-v3.5-q5_K_M | Q5_K_M | 4.8 GB | ~7.2 GB(est.) |
| openchat:7b-v3.5-0106-q5_K_M | Q5_K_M | 4.8 GB | ~7.2 GB(est.) |
Figures marked (est.) approximate the KV cache because this model's architecture details are not published. They are indicative rather than exact.
How to run openchat locally
- 1.Install Ollama for Windows, macOS or Linux.
- 2.Run this in a terminal:
ollama run openchat:7b-v3.5-q4_0 - 3.The weights download on first run, then an interactive prompt opens.
Frequently asked questions about openchat
- How much VRAM do I need to run openchat?
- At 4K context, the smallest published build of openchat (Q4_0) needs roughly 5.9 GB of GPU memory once weights, KV cache, compute buffers and runtime overhead are counted. Bigger quantizations and longer context windows need more. It can also run partly or entirely on the CPU using system RAM, more slowly.
- Can I run openchat without a dedicated GPU?
- Yes, but slowly. Without a GPU the model runs on the CPU using system RAM, which usually means a few tokens per second rather than dozens. You would need at least 5.9 GB of free RAM for the smallest build.
- How big is the openchat download?
- The smallest published build is 3.8 GB. There are 18 builds in total, the largest being 13.5 GB. Leave some extra free disk space beyond the download itself.
- How do I run openchat locally?
- Install Ollama, then run "ollama run openchat:7b-v3.5-q4_0" in a terminal. The weights download on first use and an interactive session opens.
Will openchat run on your PC?
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Model data from the official Ollama registry · verified 13/09/2026