Ollama Library · deepseek2
Can I run cogito-2.1?
The Cogito v2.1 LLMs are instruction tuned generative models. All models are released under MIT license for commercial use.
671B parameters160K contexttextMIT License3 builds
cogito-2.1 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 |
|---|---|---|---|
| cogito-2.1:671b-q4_K_M | Q4_K_M | 376.7 GB | ~539.1 GB(est.) |
| cogito-2.1:671b-q8_0 | Q8_0 | 664.3 GB | ~950.3 GB(est.) |
| cogito-2.1:671b | F16 | 1250.1 GB | ~1788.0 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 cogito-2.1 locally
- 1.Install Ollama for Windows, macOS or Linux.
- 2.Run this in a terminal:
ollama run cogito-2.1:671b-q4_K_M - 3.The weights download on first run, then an interactive prompt opens.
Frequently asked questions about cogito-2.1
- How much VRAM do I need to run cogito-2.1?
- At 4K context, the smallest published build of cogito-2.1 (Q4_K_M) needs roughly 539.1 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 cogito-2.1 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 539.1 GB of free RAM for the smallest build.
- How big is the cogito-2.1 download?
- The smallest published build is 376.7 GB. There are 3 builds in total, the largest being 1250.1 GB. Leave some extra free disk space beyond the download itself.
- How do I run cogito-2.1 locally?
- Install Ollama, then run "ollama run cogito-2.1:671b-q4_K_M" in a terminal. The weights download on first use and an interactive session opens.
Will cogito-2.1 run on your PC?
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Model data from the official Ollama registry · verified 13/09/2026