Claude Sonnet 4.5

claude-sonnet-4.5 — Anthropic’s balanced coding model. $0.006/request.

Model ID	claude-sonnet-4.5
Provider	Anthropic
Cost	$0.006/req
Tier	Standard
Best for	Coding, 200K context window

Example

curl -X POST https://ninjachat.ai/api/v1/chat \
  -H "Authorization: Bearer nj_sk_YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "claude-sonnet-4.5", "messages": [{"role": "user", "content": "Hello!"}]}'

import requests, os

r = requests.post("https://ninjachat.ai/api/v1/chat",
    headers={"Authorization": f"Bearer {os.environ['NINJACHAT_API_KEY']}"},
    json={"model": "claude-sonnet-4.5", "messages": [{"role": "user", "content": "Hello!"}]}
)
print(r.json()["message"]["content"])

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Guides: Chat Completions | All Models | Pricing | Error Handling