Claude Opus 5 · orcarouter

Claude Opus 5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work — the most capable model in the Opus line to date. It is especially strong at end-to-end software engineering, code review and bug finding, and visual analysis, and is built to stay coherent across very long, multi-step agentic sessions with heavy tool use. It accepts text, image, and file inputs with text output, serves a 1M-token context window with up to 128K output tokens, and supports adaptive reasoning with configurable effort. Opus 5 uses Anthropic's adaptive thinking design: instead of sampling parameters like temperature or top_p, callers dial depth through reasoning effort, and the model allocates thinking automatically. It speaks both the OpenAI chat-completions format and Anthropic's native Messages API (/v1/messages), supports structured outputs, verbosity control, and native tool calling, and is a strong default for production coding agents, deep research, and complex automation where correctness and judgment matter most.

Base model All models on this base All models of the provider to the provider

Input, $/1M $5.00

Output, $/1M $25.00

Cache read $0.50

Cache write $10.00

Context 1 000 000

Max output 128 000

Accepts application/pdf, image/gif, image/jpeg, image/png, image/webp, text

Last checked 04.11.2026 12:26:37 UTC

Source provider's page

Price alerts

API

OpenAI-compatible API: the official OpenAI SDKs work with this base URL. Replace YOUR_API_KEY with your key from the provider.

API base URL	`https://api.orcarouter.ai/v1`
Endpoint	`https://api.orcarouter.ai/v1/chat/completions`
Model id	`anthropic/claude-opus-5`

curl

curl https://api.orcarouter.ai/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "anthropic/claude-opus-5", "messages": [{"role": "user", "content": "Hello!"}], "max_tokens": 256}'

Python

import requests

r = requests.post(
    "https://api.orcarouter.ai/v1/chat/completions",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
      "model": "anthropic/claude-opus-5",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ],
      "max_tokens": 256
    },
)
print(r.json())

JavaScript

const r = await fetch("https://api.orcarouter.ai/v1/chat/completions", {
  method: "POST",
  headers: {Authorization: "Bearer YOUR_API_KEY", "Content-Type": "application/json"},
  body: JSON.stringify({
    "model": "anthropic/claude-opus-5",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ],
    "max_tokens": 256
  }),
});
console.log(await r.json());

Request (JSON)

{
  "model": "anthropic/claude-opus-5",
  "messages": [
    {
      "role": "user",
      "content": "Hello!"
    }
  ],
  "max_tokens": 256
}

Response (JSON)

{
  "id": "chatcmpl-...",
  "object": "chat.completion",
  "model": "anthropic/claude-opus-5",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "Hi! How can I help?"
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 9,
    "completion_tokens": 12,
    "total_tokens": 21
  }
}

The address is taken from the provider's model list; check it against the provider's documentation.

Provider's API documentation

Source: AI Rate Card, https://airatecard.com/en/c/offer%3Aorcarouter%7Canthropic/claude-opus-5, prices checked 2026-11-04; seller's page: https://orcarouter.ai/models/anthropic/claude-opus-5

Technical details

ID: offer:orcarouter|anthropic/claude-opus-5