anthropic/claude-sonnet-4-5/Released Sep 2025

Claude Sonnet 4.5

Anthropic's most advanced AI model, excelling in coding, agent-based tasks, and computer usage. It delivers high performance in reasoning, math, and domain-specific knowledge across fields like finance, law, and STEM.

Provider

anthropic

Modality

multi-to-text

Released

Sep 2025

Pricing

$3.00 / 1M in$15.00 / 1M out

Ready to build with Claude Sonnet 4.5?

bash

curl -sSf -X POST https://hub.oxen.ai/api/chat/completions \
    -H "Content-Type: application/json" \
    -H "Authorization: Bearer $OXEN_API_KEY" \
    -d '{
  "model": "claude-sonnet-4-5",
  "messages": [
    {
      "role": "user",
      "content": "Try sending a message."
    }
  ]
}'