LLM Providers

ClearPR supports 5 LLM providers out of the box. Switch providers with a single environment variable.

Provider Configuration

Set LLM_PROVIDER in your .env file:

Provider	LLM_PROVIDER	Default Model	API Key Required
Anthropic Claude	anthropic	claude-sonnet-4-20250514	Yes
OpenAI	openai	gpt-4o	Yes
Ollama	ollama	llama3	No
Mistral	mistral	mistral-large-latest	Yes
Google Gemini	gemini	gemini-2.5-pro	Yes

Anthropic Claude (Default)

LLM_PROVIDER=anthropic
LLM_API_KEY=sk-ant-api03-...
# LLM_MODEL=claude-sonnet-4-20250514  # optional

Best review quality. ClearPR's prompts are optimized for Claude.

OpenAI

LLM_PROVIDER=openai
LLM_API_KEY=sk-proj-...
# LLM_MODEL=gpt-4o

Also works with Azure OpenAI by setting LLM_BASE_URL:

LLM_PROVIDER=openai
LLM_API_KEY=your-azure-key
LLM_BASE_URL=https://your-resource.openai.azure.com/openai/deployments/your-deployment

Ollama (Local / Self-Hosted)

LLM_PROVIDER=ollama
LLM_MODEL=llama3
LLM_BASE_URL=http://localhost:11434/v1

No API key needed. Runs entirely on your hardware. Best for data-sensitive environments.

TIP

Make sure Ollama is running and the model is pulled:

ollama pull llama3

Mistral

LLM_PROVIDER=mistral
LLM_API_KEY=your-mistral-key
# LLM_MODEL=mistral-large-latest

Google Gemini

LLM_PROVIDER=gemini
LLM_API_KEY=your-google-ai-key
# LLM_MODEL=gemini-2.5-pro

Custom Model

Override the default model for any provider:

LLM_PROVIDER=openai
LLM_MODEL=gpt-4-turbo

Architecture

All providers implement the same LlmProviderPort interface. The LlmProviderRegistry selects the right adapter at startup based on LLM_PROVIDER. Adding a new provider means creating one adapter file — no changes to domain logic.

LlmProviderPort (abstract)
├── AnthropicLlmAdapter
├── OpenAiLlmAdapter
├── OllamaLlmAdapter
├── MistralLlmAdapter
└── GeminiLlmAdapter