Anthropic

    anthropic/claude-sonnet-4

    Claude Sonnet 4 on Gatewayz: one API key, unified billing, and one-line model swaps.

    Pricing

    • Input: 3 USD / 1M tokens
    • Output: 15 USD / 1M tokens

    Usage

    curl https://api.gatewayz.ai/v1/chat/completions \
  -H "Authorization: Bearer $GATEWAYZ_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "anthropic/claude-sonnet-4", "messages": [{"role": "user", "content": "Hello"}]}'