Pulling an Ollama model downloads its manifest and layers into the local model store. It is required before local CLI or API calls can run a model that is not already installed.
Model pulls can be large, and cloud or private models can require authentication. Check disk space and account requirements before pulling large names into a shared host.
Verify the pull with ollama list and a short run. A completed download alone does not prove the model can load into available memory.
Related: How to list Ollama models
Related: How to run a model in Ollama
Related: How to sign in to Ollama
$ printf '%s\n' gpt-oss:20b gpt-oss:20b
$ ollama pull gpt-oss:20b pulling manifest pulling 17052f91a42e: 100% ▕████████████████▏ 13 GB success
$ ollama list
NAME ID SIZE MODIFIED
gpt-oss:20b 17052f91a42e 13 GB just now
$ ollama run gpt-oss:20b "Return only OK."
OK
$ ollama signin
Related: How to sign in to Ollama