pip install ollama

from ollama import chat
from ollama import ChatResponse
response: ChatResponse = chat(model='gemma3', messages=[
  {
    'role': 'user',
    'content': 'Why is the sky blue?',
  },
])
print(response['message']['content'])
or access fields directly from the response object

print(response.message.content)

from ollama import chat
stream = chat(
    model='gemma3',
    messages=[{'role': 'user', 'content': 'Why is the sky blue?'}],
    stream=True,
)
for chunk in stream:
  print(chunk['message']['content'], end='', flush=True)

ollama signin

ollama pull gpt-oss:120b-cloud

from ollama import Client
client = Client()
messages = [
  {
    'role': 'user',
    'content': 'Why is the sky blue?',
  },
]
for part in client.chat('gpt-oss:120b-cloud', messages=messages, stream=True):
  print(part.message.content, end='', flush=True)

export OLLAMA_API_KEY=your_api_key

curl https://ollama.com/api/tags

import os
from ollama import Client
client = Client(
    host='https://ollama.com',
    headers={'Authorization': 'Bearer ' + os.environ.get('OLLAMA_API_KEY')}
)
messages = [
  {
    'role': 'user',
    'content': 'Why is the sky blue?',
  },
]
for part in client.chat('gpt-oss:120b', messages=messages, stream=True):
  print(part.message.content, end='', flush=True)

from ollama import Client
client = Client(
  host='http://localhost:11434',
  headers={'x-some-header': 'some-value'}
)
response = client.chat(model='gemma3', messages=[
  {
    'role': 'user',
    'content': 'Why is the sky blue?',
  },
])

import asyncio
from ollama import AsyncClient
async def chat():
  message = {'role': 'user', 'content': 'Why is the sky blue?'}
  response = await AsyncClient().chat(model='gemma3', messages=[message])
asyncio.run(chat())

import asyncio
from ollama import AsyncClient
async def chat():
  message = {'role': 'user', 'content': 'Why is the sky blue?'}
  async for part in await AsyncClient().chat(model='gemma3', messages=[message], stream=True):
    print(part['message']['content'], end='', flush=True)
asyncio.run(chat())

ollama.chat(model='gemma3', messages=[{'role': 'user', 'content': 'Why is the sky blue?'}])

ollama.generate(model='gemma3', prompt='Why is the sky blue?')

ollama.list()

ollama.show('gemma3')

ollama.create(model='example', from_='gemma3', system="You are Mario from Super Mario Bros.")

ollama.copy('gemma3', 'user/gemma3')

ollama.delete('gemma3')

ollama.pull('gemma3')

ollama.push('user/gemma3')

ollama.embed(model='gemma3', input='The sky is blue because of rayleigh scattering')

ollama.embed(model='gemma3', input=['The sky is blue because of rayleigh scattering', 'Grass is green because of chlorophyll'])

ollama.ps()

model = 'does-not-yet-exist'
try:
  ollama.chat(model)
except ollama.ResponseError as e:
  print('Error:', e.error)
  if e.status_code == 404:
    ollama.pull(model)