Ollama vs OpenAI API

Ollama Ollama

Run open models like Llama, Gemma, Qwen and DeepSeek on your own computer.

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OpenAI API OpenAI

GPT models for text, vision, images, audio and realtime voice, plus the Agents SDK.

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Side by side

PropertyOllamaOpenAI API
TypeProductProduct
CategoryAI models and APIsAI models and APIs
Made byOllamaOpenAI
PricingFreePay per use
Open sourceYesNo
APIYesYes
PlatformsDesktop, Terminal, Self-hostedAPI
StartupYesYes

Features

Only Ollama

  • local models
  • open weights
  • privacy
  • inference

Both

None

Only OpenAI API

  • llm api
  • reasoning
  • image generation
  • voice
  • embeddings
  • agents

Other alternatives

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