---
title: How to Buy a Gemini API Key
description: "Buy a Gemini API key without a Google Cloud billing account: top up by card or crypto and call native generateContent at 50% off official spend."
url: https://apitoken.sale/docs/learn/how-to-buy-gemini-api-key
language: en
---

# How to buy a Gemini API key

You buy a Gemini API key on apiToken.sale the way you buy prepaid credit: create an account, top up any whole-dollar amount by card or crypto, and generate a key in the dashboard. That key authenticates against the native Google Gemini protocol — x-goog-api-key, generateContent, the official SDK — at a flat 50% off official token spend. No Google Cloud project, billing account, or waitlist is involved.

## From checkout to a working key in five minutes

Buying a Gemini API key here is a prepaid purchase, not a subscription: sign up, add balance, generate one sk-pool key. The key is active on the very next request — there is no approval step, waitlist, or manual review anywhere in the flow.

1. Create an account with Google, GitHub, or email and password. Google and GitHub signups start with $5 of platform bonus credit, valid on supported Gemini, GPT, Claude and Kimi models; email/password accounts do not receive the bonus.
2. Top up any whole-dollar amount. Checkout accepts bank cards and cryptocurrency through a secure payment provider, and the balance never expires.
3. Open the dashboard and generate an API key. It looks like sk-pool-… and immediately covers every supported provider, not just Gemini.
4. Verify the key with the curl in the last section of this guide. A 200 with real output confirms the key, balance and route end to end.

## No Google Cloud project or billing account required

Buying Gemini access direct from Google means an AI Studio or Google Cloud account with a linked billing profile, and for many buyers that layer is the blocker. apiToken.sale owns the gateway account and the upstream billing, so the only things you bring are a login (Google, GitHub, or email) and a way to pay.

What you receive is not a reshaped proxy API. The gateway serves the native Gemini protocol — the same URL grammar, request bodies and response shapes as Google's own endpoint — so existing Gemini code keeps working after exactly two configuration changes: the base URL and the key.

## The Gemini catalog on one key

A single key covers the supported Gemini line; the model ID in the request path is the only switch between tiers. Representative text rates per 1M tokens:

| Model ID | Tier | Official input / output | After 50% discount |
| --- | --- | --- | --- |
| gemini-3.8-flash | Flash — everyday default | $0.75 / $3.75 promo | $0.375 / $1.875 |
| gemini-3.1-pro-preview | Pro — hardest reasoning | $2 / $12 | $1 / $6 |
| gemini-3.1-flash-lite | Flash-Lite — bulk steps | $0.25 / $1.50 | $0.125 / $0.75 |
| gemini-2.5-flash-lite | Cheapest text floor | $0.10 / $0.40 | $0.05 / $0.20 |

- Gemini 3.1 Pro Preview requests above 200K input tokens bill the whole request at the long-context rates: $4 input and $18 output per 1M.
- Gemini 3.8 Flash's $0.75/$3.75 Google promotion runs through 2026-12-31; standard $1.50/$7.50 rates resume on 2027-01-01.
- Cached input on the text models bills at 10% of the fresh-input rate, so prompt-cache-heavy workloads settle even lower.

[Gemini 3.8 Flash rates, context and output limits](/models/gemini-3-8-flash)

[Full Gemini pricing breakdown, including cache and image legs](/docs/learn/gemini-api-pricing)

## Native protocol: official SDK, streaming, free token counting

Because the wire format is stock Gemini, the official Google GenAI SDK works with only the base URL and key changed:

```
import os
from google import genai
from google.genai import types

client = genai.Client(
    api_key=os.environ["APITOKEN_API_KEY"],
    http_options=types.HttpOptions(base_url="https://router.apitoken.sale"),
)

response = client.models.generate_content(
    model="gemini-3.8-flash",
    contents="Reply with exactly: connected",
)
print(response.text)
```

- Streaming uses streamGenerateContent?alt=sse on the same model path and delivers incremental chunks.
- countTokens runs on the same path and is free — use it to estimate large prompts before spending on generation.
- Keep the key in an environment variable such as APITOKEN_API_KEY, never in source code.

> Configure the SDK with the bare host only. The Google SDK appends /v1beta itself; if your base URL already ends in /v1beta, the doubled segment produces a 404 on every call.

## How the prepaid balance and 50% discount settle

There is no monthly fee and no seat license; the balance is spent only when requests run. Every call settles in three steps:

- The request is metered at official Google token rates first, including cached-input and long-context legs.
- Your active discount is subtracted — B2C accounts get a flat 50% off official spend on every request.
- The net amount leaves your prepaid balance, so $50 of balance covers $100 of official-rate usage.

> When the balance reaches zero, requests fail with an insufficient-balance error until you top up again — there is no overdraft and no surprise charge to your card.

## The same balance also runs GPT, Claude and Kimi

The key is not Gemini-only. One prepaid balance backs all four supported providers; what changes per provider is the endpoint, the auth header and the model ID:

| Provider | Base URL | Auth header |
| --- | --- | --- |
| Gemini | https://router.apitoken.sale | x-goog-api-key |
| Claude and Kimi | https://router.apitoken.sale/v1/messages | x-api-key |
| GPT | https://router.apitoken.sale/v1 | Authorization: Bearer |

In practice this means a Gemini prototype can add a Claude or GPT fallback without a second account, a second bill, or a second credential to manage.

## Verify the key with one request

Before wiring the key into a project, send one minimal generateContent call. It costs a fraction of a cent and proves the whole chain — key, balance, endpoint:

```
curl https://router.apitoken.sale/v1beta/models/gemini-3.8-flash:generateContent \
  -H "x-goog-api-key: $APITOKEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"contents":[{"parts":[{"text":"Reply with exactly: connected"}]}]}'
```

- 400 — the key is missing or mistyped, or the header is not x-goog-api-key (INVALID_ARGUMENT, reason API_KEY_INVALID — the official Google API also answers 400 here; other lanes answer 401). x-api-key and Authorization: Bearer belong to the other lanes.
- 404 — the model ID is not in the catalog, or /v1beta appears twice in the URL from an SDK base-URL mistake.
- 402 FAILED_PRECONDITION — the balance is empty; top up any whole-dollar amount. Native Gemini money is HTTP 402, not RESOURCE_EXHAUSTED and not 429.
- 429 — rate limited; respect the Retry-After header and lower concurrency.

## Frequently asked questions

### Do I need a Google Cloud project to buy a Gemini API key?

No. apiToken.sale owns the gateway account and the upstream billing; your client only needs the custom base URL and the sk-pool key sent as x-goog-api-key.

### Which header authenticates Gemini requests?

x-goog-api-key. Do not send Anthropic's x-api-key or the OpenAI-style Authorization: Bearer on the native Gemini routes — each provider lane has its own header.

### Can I pay for a Gemini API key with cryptocurrency?

Yes. Checkout accepts bank cards and crypto through a secure payment provider, top-ups are any whole-dollar amount, and the balance never expires.

### What is the cheapest way to try the key?

Accounts created with Google or GitHub start with $5 of platform bonus credit, and Gemini 2.5 Flash-Lite bills at $0.05 input and $0.20 output per 1M tokens after the discount — enough for extensive testing.

### Can the same key call GPT, Claude and Kimi?

Yes. The key and balance are shared across all supported providers; you switch the endpoint, auth header and model ID, never the account.

### Does the Gemini protocol here match Google's own API?

Yes — generateContent, streamGenerateContent?alt=sse, countTokens and the official Google GenAI SDK all work unchanged. Only the base URL and the key differ.

---
Get a key: https://apitoken.sale/register
More guides: https://apitoken.sale/docs/learn