Claude Opus 5

New

by Anthropic

Anthropic flagship model for complex agentic coding and enterprise work, with a 1M context window and up to 128K synchronous output tokens.

Parameters
Opus
Context Length
1M
Category
chat
Available Serverless

Run queries immediately, pay only for usage

$5.25in|$26.25out

Per 1M Tokens

Try this modelView documentation

About this model

Claude Opus 5 is Anthropic's flagship model for complex agentic coding and enterprise work. It pairs a 1M-token context window with up to 128K output tokens in a single response, and holds its reasoning quality across long, multi-step tasks. Access it through the DOS.AI gateway alongside every other supported model with one API key and unified billing.

Capabilities

Advanced reasoningBest-in-class codingVisionTool callingLong context (1M)

Use Cases

  • Software engineering
  • Complex agents
  • Research
  • Long-horizon tasks

Model Details

Provider
Anthropic
Model ID
claude-opus-5
Parameters
Opus
Context Length
1M tokens
Category
chat

API Usage

Use the DOS API to integrate Claude Opus 5into your applications. Our API is compatible with OpenAI's client libraries for easy migration.

Model ID

claude-opus-5

Python

python
from dos import DOS

client = DOS()

response = client.chat.completions.create(
    model="claude-opus-5",
    messages=[
        {"role": "user", "content": "Hello, how are you?"}
    ]
)

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

cURL

bash
curl https://api.dos.ai/v1/chat/completions \
  -H "Authorization: Bearer $DOS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-opus-5",
    "messages": [
      {"role": "user", "content": "Hello, how are you?"}
    ]
  }'

Node.js

javascript
import DOS from 'dos-ai';

const client = new DOS();

const response = await client.chat.completions.create({
  model: "claude-opus-5",
  messages: [
    { role: "user", content: "Hello, how are you?" }
  ]
});

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