Claude Opus 4.1 API: toman pricing and code
anthropic/claude-opus-4.1
visiontoolsreasoningfilesYou are billed for the usage the request actually reported. Prices follow the market. Cached input: 435,188 toman / 1M. Web search: 2,901.25 toman / request.Pricing and top-ups
Claude Opus 4.1 example: reading an image into JSON
The example is picked from this model's own capabilities. Drop in your key and it runs as is.
# tip: a data URI works too — base64 the file and prefix it with data:image/jpeg;base64,
curl https://api.uttapen.ir/v1/chat/completions \
-H "Authorization: Bearer sk-up-…" \
-H "Content-Type: application/json" \
-d '{
"model": "anthropic/claude-opus-4.1",
"messages": [{
"role": "user",
"content": [
{"type": "text", "text": "Return only the invoice number and the total, as JSON."},
{"type": "image_url", "image_url": {"url": "https://example.com/factor.jpg"}}
]
}]
}'import base64, json
from openai import OpenAI
client = OpenAI(base_url="https://api.uttapen.ir/v1", api_key="sk-up-…")
img = base64.b64encode(open("factor.jpg", "rb").read()).decode()
resp = client.chat.completions.create(
model="anthropic/claude-opus-4.1",
messages=[{
"role": "user",
"content": [
{"type": "text", "text": "Return the invoice number, the date and the total as JSON."},
{"type": "image_url", "image_url": {"url": f"data:image/jpeg;base64,{img}"}},
],
}],
response_format={"type": "json_object"},
)
print(json.loads(resp.choices[0].message.content))import OpenAI from "openai";
import { readFileSync } from "node:fs";
const client = new OpenAI({ baseURL: "https://api.uttapen.ir/v1", apiKey: "sk-up-…" });
const img = readFileSync("factor.jpg").toString("base64");
const resp = await client.chat.completions.create({
model: "anthropic/claude-opus-4.1",
messages: [{
role: "user",
content: [
{ type: "text", text: "Return the invoice number, the date and the total as JSON." },
{ type: "image_url", image_url: { url: `data:image/jpeg;base64,${img}` } },
],
}],
response_format: { type: "json_object" },
});
console.log(JSON.parse(resp.choices[0].message.content));What is Claude Opus 4.1 good for?
The id for Claude Opus 4.1 in our API is "anthropic/claude-opus-4.1", served from Anthropic. Context is 200,000 tokens; past that you have to summarise the history yourself. A single response can run to 32,000 tokens. On price it sits in the "expensive" band — cheaper than 395 and dearer than 11 of the other paid models in the catalogue.
What it can do beyond plain text: it reads images directly, which makes it a real option for invoices, forms and screenshots; it takes files such as PDFs as input; it supports tool calling, so it can invoke your own functions with valid arguments; it has a reasoning mode that pays off on multi-step problems, maths and debugging. All of it works through the standard parameters of the official OpenAI SDK — no custom client, no wrapper. Keep in mind that reasoning tokens are output tokens and do appear on the bill.
Pricing is 4,351,875 toman per 1M input tokens and 21,759,375 per 1M output tokens. A 1,000-word round trip on Claude Opus 4.1 lands near 33,945 toman. It supports cached input: repeated context is billed at 435,188 toman per 1M, which matters a lot if your system prompt is long. You are always charged for the usage the request actually reported, never for the estimate, and a failed request costs nothing.
The closest alternative with the same capabilities from a different provider is o3 Pro: Claude Opus 4.1 works out roughly 1.1× cheaper, and its context window is the same size. Both run on the same key and the same code, so trying the other one is a single string change.
To make the figure concrete: 100,000 toman of credit buys roughly 3 thousand-word requests on Claude Opus 4.1, and every 1,000 toman is about 29 words of round trip. A job with one million input tokens and one million output tokens comes to 26,111,250 toman in total. Filling this model's 200,000-token window costs 870,375 toman on the input side alone, which is the real reason to keep conversation history short.
This id gets confused with "anthropic/claude-opus-4.1:batch", because the underlying model is the same. The difference is the suffix: no suffix (the standard variant) against "batch". On a thousand-word request this variant works out 2× dearer (33,945 against 16,972 toman). On parameters, this one takes top_k, top_p while the other takes response_format, structured_outputs.
Anthropic has 31 models in our catalogue; the cheapest is Claude 3 Haiku at 566 toman per thousand words and the dearest Claude Opus 4.1 at 33,945. Among the less common parameters it accepts top_k — all through the standard request body. It does not support response_format, seed, structured_outputs, which most models here do, so test before switching if your code relies on them. By context size the nearest option from another provider is o1 at 200,000 tokens.
Good fits: work where the quality of the answer matters more than its cost, logic puzzles and code review, pulling text and fields out of images, agents that reach out to APIs and databases, analysing a long document or codebase in one request.
Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified and shows notable gains...
Three real jobs, priced on this model
Each figure is derived from the prices above and moves when they do.
| Job | Tokens | Cost |
|---|---|---|
| One chat turn with a medium history | 1,500 in + 400 out | 15,232 toman |
| Summarising a ten-page document | 4,000 in + 600 out | 30,463 toman |
| Classifying a thousand short rows | 120,000 in + 20,000 out | 957,413 toman |
Other variants of this model
Same core model, different execution terms and different price. This page is the standard variant.
| Variant | Model id | Output / 1M | Context |
|---|---|---|---|
| batch (cheaper, slower) | anthropic/claude-opus-4.1:batch | 10,879,688 | 200,000 |
Put the variant's id verbatim in the model field; nothing else in your code changes.
Frequently asked
- How do I call Claude Opus 4.1 from Iran?
- Sign up with your mobile number, top the wallet up in toman, create an API key, then in the official OpenAI SDK point base_url at https://api.uttapen.ir/v1 and set model to "anthropic/claude-opus-4.1". Nothing else in your code changes.
- What does Claude Opus 4.1 cost in toman?
- 4,351,875 toman per 1M input tokens and 21,759,375 toman per 1M output tokens; a 1,000-word request is around 33,945 toman. You pay for the usage that request actually reported, and a failed request costs nothing.
- How much input does Claude Opus 4.1 take?
- Up to 200,000 tokens per request, roughly 150k words. A single answer can reach 32,000 tokens.
- Does Claude Opus 4.1 support streaming and tool calling?
- Streaming (stream=true) works on every model here. This one supports tool calling in the standard OpenAI shape. Image input is accepted through image_url, as a data URI or a public URL.