How much does the Gemini 2.5 Flash API cost?

$0.18 per million input tokens and $1.50 per million output tokens, with cached input at $0.018. Google's list price is $0.30 and $2.50, so this is 40% under Google's list price.

Is Gemini 2.5 Flash free?

It is pay as you go: prepaid credit from $10, with no subscription or monthly fee, billed per token. A 1,000-token prompt with a 500-token reply costs about $0.0009.

What is the Gemini 2.5 Flash context window?

Gemini 2.5 Flash has a 1,048,576-token context window, with up to 65,536 output tokens per request. It takes text, image, audio and video input.

What is the Gemini 2.5 Flash model id?

gemini-2.5-flash. Send it as the model through the Gemini SDK or OpenAI SDK with base URL https://api.uplinkswitch.com/v1.

Is it the real Gemini 2.5 Flash?

Every day each model gets the same test prompt, and a model always counts that prompt the same way; a swapped one would not. Gemini 2.5 Flash's latest result: Same fingerprint since Oct 12.

UplinkSwitch

Models / Google

Gemini 2.5 Flash API pricing

$0.18 in, $1.50 out per million tokens, 40% under Google's list price.

gemini-2.5-flashmanaged routeGemini SDKOpenAI SDK

Price · per million tokens, USD

Tokens	Google list price	UplinkSwitch	Saving
Input	$0.30	$0.18	-40%
Cached input	$0.03	$0.018	-40%
Output	$2.50	$1.50	-40%

List price: Google's published rate, read October 2026. Same price on every host.

Real-model check: Same fingerprint since Oct 12

Gemini 2.5 Flash specs

Context window: 1,048,576 tokens
Max output: 65,536 tokens
Input: text, image, audio and video
Released: June 17, 2025

Gemini 2.5 Flash API · base URL and key

Python · OpenAI SDK

from openai import OpenAI

client = OpenAI(
    base_url="https://api.uplinkswitch.com/v1",
    api_key="sk-uplink-live-...",
)

completion = client.chat.completions.create(
    model="gemini-2.5-flash",
    messages=[{"role": "user", "content": "Summarize this in one line."}],
)
print(completion.choices[0].message.content)

TypeScript · OpenAI SDK

import OpenAI from 'openai';

const client = new OpenAI({
  baseURL: 'https://api.uplinkswitch.com/v1',
  apiKey: 'sk-uplink-live-...',
});

const completion = await client.chat.completions.create({
  model: 'gemini-2.5-flash',
  messages: [{ role: 'user', content: 'Summarize this in one line.' }],
});
console.log(completion.choices[0].message.content);

Python · Gemini SDK

from google import genai

client = genai.Client(
    api_key="sk-uplink-live-...",
    http_options={"base_url": "https://api.uplinkswitch.com/v1"},
)

response = client.models.generate_content(
    model="gemini-2.5-flash",
    contents="Summarize this in one line.",
)
print(response.text)

curl

curl "https://api.uplinkswitch.com/v1beta/models/gemini-2.5-flash:generateContent" \
  -H "x-goog-api-key: sk-uplink-live-..." \
  -H "content-type: application/json" \
  -d '{"contents":[{"parts":[{"text":"Hello"}]}]}'

Guides: Cursor, Cline, Roo Code, Kilo Code, SDKs.

What would it cost? · paste a prompt, priced before you send it

Prompt

Answer length, tokens

Input is counted at about 4 characters per token.

Cheapest first. A real request is billed on the provider's own token count. Same estimate as JSON: POST https://api.uplinkswitch.com/v1/estimate, no key needed.

Gemini 2.5 Flash questions

How much does the Gemini 2.5 Flash API cost?: $0.18 per million input tokens and $1.50 per million output tokens, with cached input at $0.018. Google's list price is $0.30 and $2.50, so this is 40% under Google's list price.
Is Gemini 2.5 Flash free?: It is pay as you go: prepaid credit from $10, with no subscription or monthly fee, billed per token. A 1,000-token prompt with a 500-token reply costs about $0.0009.
What is the Gemini 2.5 Flash context window?: Gemini 2.5 Flash has a 1,048,576-token context window, with up to 65,536 output tokens per request. It takes text, image, audio and video input.
What is the Gemini 2.5 Flash model id?: gemini-2.5-flash. Send it as the model through the Gemini SDK or OpenAI SDK with base URL https://api.uplinkswitch.com/v1.
Is it the real Gemini 2.5 Flash?: Every day each model gets the same test prompt, and a model always counts that prompt the same way; a swapped one would not. Gemini 2.5 Flash's latest result: Same fingerprint since Oct 12.

Read: Gemini API cost per request, October 2026: a chat turn and a long document.

Get a key · All models