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DeepSeek Flash Latest API: toman pricing and code

~deepseek/deepseek-flash-latest

This id is an alias that always points at the newest version of this model. Send a fixed version's id if answers must not change when a new version ships.

Image inputTool callingReasoningJSON output
Create a keyTry it
Input · per 1M tokens
2,077 toman
Output · per 1M tokens
173,110 toman
One 1,000-word request ≈
228 toman

You are billed for the usage the request actually reported. Prices follow the market. Cached input: 1,731 toman per 1M tokens.Pricing and top-ups

DeepSeek Flash Latest 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": "~deepseek/deepseek-flash-latest",
    "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="~deepseek/deepseek-flash-latest",
    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: "~deepseek/deepseek-flash-latest",
  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 DeepSeek Flash Latest good for?

DeepSeek publishes this model; we expose it under the id "~deepseek/deepseek-flash-latest". Its context window is 1,048,576 tokens, roughly 786k English words in one request. A single response can run to 943,718 tokens. On price it sits in the "very cheap" band — cheaper than 300 and dearer than 85 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 supports tool calling, so it can invoke your own functions with valid arguments; it returns schema-valid JSON through response_format, ready to hand to your code; 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 2,077 toman per 1M input tokens and 173,110 per 1M output tokens. A 1,000-word round trip on DeepSeek Flash Latest lands near 228 toman. It supports cached input: repeated context is billed at 1,731 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 Claude Haiku 5.5: DeepSeek Flash Latest works out about 17% cheaper, and its context window is larger. 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 439 thousand-word requests on DeepSeek Flash Latest, and every 1,000 toman is about 4,386 words of round trip. A job with one million input tokens and one million output tokens comes to 175,187 toman in total. Filling this model's 1,048,576-token window costs 2,178 toman on the input side alone, which is the real reason to keep conversation history short.

Its nearest relative in the catalogue is "deepseek/deepseek-v4.1-flash-1017", and choosing between those two is where most people hesitate. Both land at nearly the same price on a thousand-word request (228 and 228 toman).

DeepSeek has 18 models in our catalogue; the cheapest is DeepSeek V4 Flash 0423 at 123 toman per thousand words and the dearest DeepSeek Pro Latest at 3,642. Among the less common parameters it accepts logit_bias, logprobs, max_completion_tokens, min_p, parallel_tool_calls, presence_penalty — all through the standard request body. By context size the nearest option from another provider is Ember-1 at 1,048,576 tokens.

Good fits: high-volume work such as classification, tagging and bulk summarising, logic puzzles and code review, pulling text and fields out of images, agents that reach out to APIs and databases, extracting data against a fixed schema, analysing a long document or codebase in one request.

Provider's own description

This model always redirects to the latest model in the DeepSeek Flash family.

Three real jobs, priced on this model

Each figure is derived from the prices above and moves when they do.

JobTokensCost
One chat turn with a medium history1,500 in + 400 out72 toman
Summarising a ten-page document4,000 in + 600 out112 toman
Classifying a thousand short rows120,000 in + 20,000 out3,711 toman

Price history

DateInput (toman/1M)Output (toman/1M)
5 Nov 20262,077173,110
4 Nov 20267,617138,488
31 Oct 20265,36649,856
31 Oct 20264,88259,896
31 Oct 20265,36665,782
31 Oct 20266,47472,014
31 Oct 20267,09778,938
31 Oct 20267,09794,864
31 Oct 20267,61766,474
29 Oct 202615,234132,602
29 Oct 202614,160519,329
29 Oct 202613,156173,110

Every price change for this model is recorded. Toman figures use today's rate.

Frequently asked

How do I call DeepSeek Flash Latest 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 "~deepseek/deepseek-flash-latest". Nothing else in your code changes.
What does DeepSeek Flash Latest cost in toman?
2,077 toman per 1M input tokens and 173,110 toman per 1M output tokens; a 1,000-word request is around 228 toman. You pay for the usage that request actually reported, and a failed request costs nothing.
How much input does DeepSeek Flash Latest take?
Up to 1,048,576 tokens per request, roughly 786k words. A single answer can reach 943,718 tokens.
Does DeepSeek Flash Latest 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. Structured output through response_format works too.