Claude

Claude excels at complex reasoning, code generation, and nuanced analysis. ModelReins supports all Claude models through the Anthropic API.

Setup

export MODELREINS_PROVIDER=claude
export ANTHROPIC_API_KEY=sk-ant-...

Available models

Model	Cost	Best For
haiku	$0.001/job	Fast tasks, classification, extraction
sonnet	$0.02/job	Balanced quality and cost
opus	$0.12/job	Complex reasoning, architecture

Configuration

{
  "provider": "claude",
  "claude": {
    "apiKey": "${ANTHROPIC_API_KEY}",
    "model": "haiku",
    "maxTokens": 4096
  }
}

When to use Claude

• Code generation and review where correctness matters
• Multi-step reasoning tasks
• Analysis requiring nuance and context awareness
• Tasks where instruction-following precision is critical