Models / Claude Sonnet 4 5 20250929

Claude Sonnet 4 5 20250929

Qwen Tier 1Proprietary

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

anthropic/claude-sonnet-4-5-20250929
Context Window
200K
Max Output
33K
Providers
1
Released
2026-01

Capabilities

ChatToolsFunction CallingStreamingThinkingVision

Pricing by Provider

ProviderPriceLatency p50Latency p95Status
yylx_claude$3.00 /M in · $15.00 /M out800ms3000ms

Quick Start

Python
import magicrouter

mr = magicrouter.Client(
    provider_keys={"yylx_claude": "your-api-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({
  providerKeys: { yylx_claude: "your-api-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://app.yylx.io/v1/chat/completions \
  -H "Authorization: Bearer your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-4-5-20250929",
    "messages": [{"role": "user", "content": "Your prompt here"}]
  }'

Use this model

Sign up for free and test Claude Sonnet 4 5 20250929 in the playground

Get Started
Claude Sonnet 4 5 20250929 — MagicRouter