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Gemini 2.5 Flash API: toman pricing and code

google/gemini-2.5-flash

Image inputTool callingReasoningJSON outputFile inputAudio input
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Input · per 1M tokens
103,866 toman
Output · per 1M tokens
865,548 toman
One 1,000-word request ≈
1,260 toman

You are billed for the usage the request actually reported. Prices follow the market. Cached input: 10,387 toman per 1M tokens. Reasoning tokens: 865,548 toman per 1M tokens. Per input image: 0.10 toman. Web search: 4,847.07 toman per request.Pricing and top-ups

Gemini 2.5 Flash 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": "google/gemini-2.5-flash",
    "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="google/gemini-2.5-flash",
    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: "google/gemini-2.5-flash",
  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 Gemini 2.5 Flash good for?

Gemini 2.5 Flash is one of Google's models. Put "google/gemini-2.5-flash" in the model field and the rest of your code stays as it is. Gemini 2.5 Flash keeps 1,048,576 tokens in view at once, and that number is what caps the conversation history in your product. A single response can run to 65,535 tokens. On price it sits in the "mid-range" band — cheaper than 160 and dearer than 224 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 accepts audio input; 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 103,866 toman per 1M input tokens and 865,548 per 1M output tokens. A 1,000-word round trip on Gemini 2.5 Flash lands near 1,260 toman. It supports cached input: repeated context is billed at 10,387 toman per 1M, which matters a lot if your system prompt is long. Each input image is billed separately at about 0.10 toman. 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 Nova 2 Lite, and Gemini 2.5 Flash costs about the same, 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 79 thousand-word requests on Gemini 2.5 Flash, and every 1,000 toman is about 794 words of round trip. A job with one million input tokens and one million output tokens comes to 969,414 toman in total. Filling this model's 1,048,576-token window costs 108,911 toman on the input side alone, which is the real reason to keep conversation history short.

Its nearest relative in the catalogue is "google/gemini-3.5-flash-lite", and choosing between those two is where most people hesitate. Both land at nearly the same price on a thousand-word request (1,260 and 1,260 toman). Maximum answer length differs as well: 65,535 against 65,536 tokens. On parameters the other takes reasoning_effort.

Google has 43 models in our catalogue; the cheapest is Gemma 4 26B A4B at 67 toman per thousand words and the dearest Gemini 3.1 Pro Preview Custom Tools at 6,301. By context size the nearest option from another provider is DeepSeek V4 Flash 0423 at 1,048,576 tokens.

Good fits: product chatbots and internal assistants, where cost and quality have to balance, 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

Gemini 2.5 Flash is Google's state-of-the-art workhorse model, specifically designed for advanced reasoning, coding, mathematics, and scientific tasks. It includes built-in "thinking" capabilities, enabling it to provide responses with greater...

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 out502 toman
Summarising a ten-page document4,000 in + 600 out935 toman
Classifying a thousand short rows120,000 in + 20,000 out29,775 toman

Frequently asked

How do I call Gemini 2.5 Flash 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 "google/gemini-2.5-flash". Nothing else in your code changes.
What does Gemini 2.5 Flash cost in toman?
103,866 toman per 1M input tokens and 865,548 toman per 1M output tokens; a 1,000-word request is around 1,260 toman. You pay for the usage that request actually reported, and a failed request costs nothing.
How much input does Gemini 2.5 Flash take?
Up to 1,048,576 tokens per request, roughly 786k words. A single answer can reach 65,535 tokens.
Does Gemini 2.5 Flash 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.