Claude Sonnet 5.5

Name: Claude Sonnet 5.5 API
Brand: Anthropic
SKU: claude-sonnet-5-5

silvamux/claude-sonnet-5-5

Claude Sonnet 5.5 is Anthropic's balanced model with standout multilingual and creative writing capability — suited to localization, scriptwriting and e-commerce content.

Supported modalities

text

Input price$2 / 1M tokensper 1M tokens

Output price$10 / 1M tokensper 1M tokens

Pricing

Tune and Pro share the same prices.

Input context	Input	Output	Cache read	Cache write
-	$2 / 1M tokens	$10 / 1M tokens	$0.1 / 1M tokens	$2.5 / 1M tokens

Capabilities

Claude Sonnet 5.5 scored 79 overall, performing well — a writing-flavored generalist. It stands out in multilingual capability (94%), creative writing (91%) and general knowledge (87%), producing polished multilingual copy on a broad knowledge base, which makes it a natural fit for localization, scriptwriting and marketing content. Comparatively, code generation (66%) is moderate; coding is not its focus. Multilingual creative work is where it shines.

Overall

79/ 100良好

HighlightsMultilingual Capability 94%Creative Writing 91% · General Knowledge 87%

Best forTranslation & Localization / Scriptwriting / E-commerce CopywritingScenario fit 85%

Relative weaknessCode Generation66%

Advanced Capabilities

8 items

Agent Collaboration69%

18 questions · Mixed

Code Generation66%

12 questions · Objective

Code Comprehension & Debugging70%

6 questions · Mixed

Creative Writing91%

22 questions · Subjective

Information Retrieval / RAG83%

9 questions · Mixed

Long-Context Handling85%

16 questions · Subjective

Math & Science Reasoning74%

14 questions · Mixed

Multilingual Capability94%

11 questions · Subjective

General Foundations

3 items

General Knowledge87%

10 questions · Mixed

Text Comprehension79%

23 questions · Mixed

Logical Reasoning75%

16 questions · Mixed

Safety & Compliance

2 items

Hallucination Control73%

15 questions · Mixed

Instruction Following78%

18 questions · Subjective

Performance

Claude Sonnet 5.5

claude-sonnet-5-5

Last 24 hours · 153,115 requests

First token · TTFT · P50: 2094ms
Output speed · TPS · P50: 85tok/s
Full response · E2E · P50: 7.17s
Request success rate: 99.23%

24-hour availability

24 hours ago12 hours agoNow

Claude Sonnet 5.5 example code and API

Proclaude-sonnet-5-5

/api/v0/chat/completions/api/v1/chat/completions/api/anthropic/v1/messages

UnifiedOpenAIAnthropic

curl https://silvamux.io/api/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-5-5",
    "messages": [{"role": "user", "content": "Hello, please introduce yourself"}]
  }'

# pip install openai
from openai import OpenAI

client = OpenAI(
    base_url="https://silvamux.io/api/v1",
    api_key="YOUR_API_KEY",
)

response = client.chat.completions.create(
    model="claude-sonnet-5-5",
    messages=[
        {"role": "user", "content": "Hello, please introduce yourself"}
    ],
)

print(response.choices[0].message.content)

// Gradle: implementation(__HL_SLOT_0__)
import okhttp3.*;

OkHttpClient client = new OkHttpClient();
MediaType json = MediaType.get("application/json");
String payload = "{\"model\":\"claude-sonnet-5-5\",\"messages\":[{\"role\":\"user\",\"content\":\"Hello, please introduce yourself\"}]}";

Request request = new Request.Builder()
    .url("https://silvamux.io/api/v1/chat/completions")
    .header("Authorization", "Bearer YOUR_API_KEY")
    .post(RequestBody.create(payload, json))
    .build();

try (Response response = client.newCall(request).execute()) {
    System.out.println(response.body().string());
}

// npm install openai
import OpenAI from 'openai'

const client = new OpenAI({
  baseURL: 'https://silvamux.io/api/v1',
  apiKey: 'YOUR_API_KEY',
})

const response = await client.chat.completions.create({
  model: 'claude-sonnet-5-5',
  messages: [{ role: 'user', content: 'Hello, please introduce yourself' }],
})

console.log(response.choices[0].message.content)