ollama-ai-provider

Vercel AI Provider for running Large Language Models locally using Ollama.

Requirements

This provider requires Ollama >= 0.5.0

Installation

The Ollama provider is available in the ollama-ai-provider module. You can install it with

npm i ollama-ai-provider

Provider Instance

You can import the default provider instance ollama from ollama-ai-provider:

import { ollama } from 'ollama-ai-provider';

If you need a customized setup, you can import createOllama from ollama-ai-provider and create a provider instance with your settings:

import { createOllama } from 'ollama-ai-provider';

const ollama = createOllama({
  // custom settings
});

You can use the following optional settings to customize the Ollama provider instance:

• baseURL string

  Use a different URL prefix for API calls, e.g. to use proxy servers. The default prefix is http://localhost:11434/api.

• headers Record<string,string>

  Custom headers to include in the requests.

Models

The first argument is the model id, e.g. phi3.

const model = ollama('phi3');

Examples

Inside the examples folder, you will find some example projects to see how the provider works. Each folder has its own README with the usage description.

Tested models and capabilities

This provider is capable of generating and streaming text and objects. Object generation may fail depending on the model used and the schema used.

At least it has been tested with the following features:

Image input	Object generation	Tool usage	Tool streaming
✅	✅	✅	⚠️

Image input

You need to use any model with visual understanding. These are tested:

• llava
• llava-llama3
• llava-phi3
• llama3.2-vision
• moondream

Ollama does not support URLs, but the ai-sdk is able to download the file and send it to the model.

Object generation

This feature is unstable with some models

Some models are better than others. Also, there is a bug in Ollama that sometimes causes the JSON generation to be slow or end with an error. In my tests, I detected this behavior with llama3 and phi3 models more than others like openhermes and mistral, but you can experiment with them too.

More info about the bugs:

• ollama/ollama#3851
• ollama/ollama#3785

Remember that Ollama and this module are free software, so be patient.

Tool usage (no streaming)

Ollama has introduced support for tooling, enabling models to interact with external tools more seamlessly. Please, see the list of models with tooling support in the Ollama site.

Caveats:

1. Object-tool mode may not work with certain models.
2. Errors may still occur due to model limitations, tool integration issues, or other factors. Unfortunately, they may be inherent to the model’s design or implementation, and there may not be a way to resolve them fully

Tool streaming

This feature is not completed and unstable

Ollama tooling does not support it in streams, but this provider can detect tool responses.

You can disable this experimental feature with `` setting:

ollama("model", {
  experimentalStreamTools: false,
})

Intercepting Fetch Requests

This provider supports Intercepting Fetch Requests.

Provider Management

Provider management is an experimental feature

This provider supports Provider Management.