Models / Claude Sonnet 4.5 (2025-09-29)

Claude Sonnet 4.5 (2025-09-29)

Proprietary

Anthropic Claude Sonnet 4.5 (2025-09-29 snapshot).

anthropic/claude-sonnet-4-5-20250929
Context Window
200K
Max Output
33K
Released
2026-01

Capabilities

ChatToolsFunction CallingStreamingThinkingVision

Price

Prices shown are the official rate published by the model provider, before any platform discounts. Your actual rate may be lower based on your account's discount tier.

PriceLatency p50Latency p95Status
$3.00 /M in · $15.00 /M out800ms3000ms

Quick Start

Python
import magicrouter

mr = magicrouter.Client(api_key="mr-your-key")

response = mr.chat(
    "anthropic/claude-sonnet-4-5-20250929",
    "Your prompt here"
)
print(response.choices[0].message.content)
TypeScript
import { MagicRouter } from "magicrouter";

const mr = new MagicRouter({ apiKey: "mr-your-key" });

const response = await mr.chat({
  model: "anthropic/claude-sonnet-4-5-20250929",
  messages: [{ role: "user", content: "Your prompt here" }]
});
console.log(response.choices[0].message.content);
cURL
curl https://api.magicrouter.ai/v1/chat/completions \
  -H "Authorization: Bearer mr-your-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "anthropic/claude-sonnet-4-5-20250929",
    "messages": [{"role": "user", "content": "Your prompt here"}]
  }'

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