Anthropic is the default and recommended LLM provider for MergeWatch. It offers the simplest setup — just add your API key and you are ready to go. Works on every platform (Docker, AWS, GCP, bare metal).
Configuration
Set these environment variables in your .env file or container environment:
| Variable | Required | Value |
|---|
LLM_PROVIDER | Yes | anthropic |
ANTHROPIC_API_KEY | Yes | Your Anthropic API key |
LLM_MODEL | No | Override the default model |
Default model
MergeWatch uses claude-3-5-haiku-20241022 by default. This model provides an excellent balance of speed, quality, and cost for code review tasks.
Model override
To use a higher-capability model, set LLM_MODEL in your environment:
LLM_MODEL=claude-3-5-sonnet-20241022
Example .env file
# LLM Provider
LLM_PROVIDER=anthropic
ANTHROPIC_API_KEY=sk-ant-api03-...
# Optional: override the default model
# LLM_MODEL=claude-3-5-sonnet-20241022
Pricing
You pay Anthropic directly for API usage. MergeWatch does not add any markup or proxy fees. See the Anthropic pricing page for current per-token rates.
Claude 3.5 Haiku is one of the most cost-effective models for code review. Most repositories see costs under $5/month with typical PR volumes.
Next steps
