I can't belive Ollama haven't fix the context window limits yet.

I wrote a step-by-step guide on how to setup Ollama with larger context length a while ago: https://prompt.16x.engineer/guide/ollama

TLDR

  ollama run deepseek-r1:14b
  /set parameter num_ctx 8192
  /save deepseek-r1:14b-8k
  ollama serve