Anthropic: Claude Opus 4.5: AI model
Claude Opus 4.5 is a maximum-capability model for demanding engineering and multi-step agent tasks from Anthropic, with a 200K-token context window. Reachable from inside Iran through Hormouz.
- Context window:
- 200,000 tokens
- Input:
- $5/1M tokens
- Output:
- $25/1M tokens
- Type:
- text, image
- Vision
- Tools
- Streaming
- Long context
Thinking levels:
Claude Opus 4.5 is the top-capability tier of the Claude family, aimed at the hardest coding, reasoning and long-horizon agentic work. It accepts text and image input and returns text, supports tool calling for building agents and automations, and works with streaming responses. It also supports extended reasoning, so you can trade extra thinking time for higher accuracy on hard problems. The context window is 200K tokens, which suits long documents, large codebases and multi-turn sessions.
Opus-class models are commonly used for complex software engineering, large-codebase refactors, multi-step debugging, long-running agent pipelines and demanding knowledge work. Hormouz serves it behind an OpenAI-compatible API, so you can point your base URL at Hormouz, drop in a Hormouz key, and run existing OpenAI SDK code without changes.
Pricing is usage-based: $5 per million input tokens and $25 per million output tokens. There is no fixed monthly fee. You pay only for the tokens you use. Hormouz provides stable access to the model from inside Iran, with no foreign credit card or circumvention tooling required.
Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...
Quickstart
curl https://api.hormouz.net/v1/chat/completions \
-H "Authorization: Bearer ng-YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "anthropic/claude-opus-4.5",
"messages": [{"role": "user", "content": "Hello!"}]
}'Specs
| Vendor | Anthropic |
|---|---|
| Type | Text, Image |
| Context window | 200,000 tokens |
| Pricing | $5.00/M in · $25.00/M out |
| API | Chat Completions |
| Capabilities | Streaming · Vision · Tools |
Benchmarks
Reasoning
Coding
Agentic
Source: Artificial Analysis
Design Arena
How Design Arena works ↗Metrics sourced from Design Arena
Code example
curl https://api.hormouz.net/v1/chat/completions \
-H "Authorization: Bearer ng-YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "anthropic/claude-opus-4.5",
"messages": [{"role": "user", "content": "Hello!"}]
}'from openai import OpenAI
client = OpenAI(api_key="ng-YOUR_API_KEY", base_url="https://api.hormouz.net/v1")
response = client.chat.completions.create(
model="anthropic/claude-opus-4.5",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({ apiKey: "ng-YOUR_API_KEY", baseURL: "https://api.hormouz.net/v1" });
const response = await client.chat.completions.create({
model: "anthropic/claude-opus-4.5",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);Buy the Anthropic: Claude Opus 4.5 API, paid in rial
- Buy credit with an Iranian bank card; no foreign card or account needed.
- One Hormouz key reaches Anthropic: Claude Opus 4.5 and 600+ other models, and you pay only for what you use.
- No VPN and no risk of a banned account; just change the base URL to api.hormouz.net/v1.
Use via Hormouz
Connect to this model and 600+ others with one API key, then see usage down to each request.
Request company accessFAQ
- How much does Claude Opus 4.5 cost?
- Billing is usage-based: $5 per million input tokens and $25 per million output tokens. There is no fixed monthly fee. You pay only for what you use.
- How do I access Claude Opus 4.5 from inside Iran?
- Create an account on Hormouz and generate an API key. Hormouz provides a stable path to the model from inside Iran, with no foreign credit card or circumvention tooling required.
- Is Claude Opus 4.5 compatible with OpenAI code?
- Yes. Hormouz exposes an OpenAI-compatible API. Point your base URL at Hormouz and swap in your Hormouz key. Your existing SDKs and code run without a rewrite.
- What context window and capabilities does Claude Opus 4.5 have?
- It has a 200K-token context window, accepts text and image input, and supports tool calling and streaming, plus extended reasoning for harder problems. That makes it suitable for long documents, codebases and agentic workflows.
- What is Claude Opus 4.5 good for?
- Typical uses are complex software engineering, large-codebase refactors, multi-step debugging, long-running agent pipelines and demanding knowledge work.
- How does Claude Opus 4.5 compare to other Claude models?
- Claude comes in three tiers: Opus, Sonnet and Haiku. Opus is the highest-capability tier: the pick for the hardest reasoning, coding and long-horizon agent work.
Updated 2026-10-13