Claude Opus 5 API in Australia

In Australian dollars, the currency your card is charged in, with the published US dollar rate beside each.

For scale: 1,000 requests of about 3,000 tokens in and 1,000 out cost A$60.56 — a long prompt and a page of answer each. Every rate is published and stays the same from one request to the next. See every model.

Prices are our published US dollar rates converted at A$1.47 to the dollar, our rate for October — the same rate your card is charged.

Opus 5 was Anthropic’s top everyday model from July to September 2026, when Opus 5.5 replaced it. At launch Anthropic’s headline was agent work: on Zapier’s AutomationBench it passed about one and a half times as many tasks as the next-best model at the same cost per task.

Unlike Opus 5.5, its thinking is optional, so it can give a quick answer without reasoning first. That, and stability, are the reasons to stay on it: if a product was tuned on Opus 5, keep it there until you have tested the move.

• Products already tuned and tested on Opus 5.
• Agent and computer-use work where thinking needs to be switchable.
• Automating business workflows.

• Anthropic now treats it as a legacy model and recommends Opus 5.5, which it says costs about 40% less on typical work.
• Its knowledge stops a month earlier, in May 2026, than the 5.5 models’.

Roar AI provides access to Claude Opus 5 through the Roar AI gateway, charged in Australian dollars on one bill with every other model. Requests from Australia go through our gateway in Singapore today; a gateway in Sydney is coming. Developers can use Claude Opus 5 alongside other supported models without a separate integration for every provider.

Use the OpenAI SDK you already have — point it at Roar AI and name the model. Read the docs.

from openai import OpenAI

client = OpenAI(base_url="https://api.roar-ai.com/v1", api_key="roar_live_…")

reply = client.chat.completions.create(
    model="claude-opus-5",
    messages=[{"role": "user", "content": "Summarise this contract in plain English."}],
)

Claude Opus 5 is a frontier model, and requests are processed on international infrastructure, outside Australia. The model directory says where each model is processed.

Claude Opus 5 vs Claude Opus 5.5Head to headGPT-5.6 SolSimilar priceGrok 4.6Similar priceKimi K3Similar price

Every Claude model: Claude API. Explore all AI models available in Australia