Sale!

Claude API Key (Fable, Opus, Sonnet, Haiku)

The AITopUp promise

Activated in 30 minutesProcessed as soon as your payment is confirmed (8:00–22:00 GMT+7).
1-day warrantyIf the account stops working within 1 days, we fix it, replace it or refund under our policy.
Telegram support 8:00–22:00Setup guide included, replies within 5 minutes (GMT+7).
Exactly what you paid forThe plan and term on your order, with order tracking on the site.

Claude API Key (Fable, Opus, Sonnet, Haiku)

~~$3.99~~ $2.99

Choose a plan

Plan

Duration

Clear

Quantity

Product details

Run Claude Code, Cline or your own scripts all day without topping up a Claude Console account. This prepaid Claude API key gives you a fixed token pack for Fable, Opus, Sonnet and Haiku on a single key. It is a third-party key served through a gateway compatible with both the Anthropic and OpenAI API formats, not an original key issued by Anthropic.

What's included

An API key, a dedicated base URL, setup instructions and a page to check remaining tokens
Claude Fable 5.1: for hard reasoning and long multi-step agent tasks; slower, highest token cost
Claude Opus 5.5: Anthropic's recommended default for most work, great for long-running coding agents and analysis
Claude Sonnet 5.5: balanced speed and quality for daily use in Cursor or Cline
Claude Haiku 5.5: fastest and cheapest, ideal for high-volume classification or extraction

Which plan should I choose?

Tokens are deducted per call for both input and output. Larger packs offer more validity options:

10M or 50M tokens / 1 day: testing or a short coding session.
100M tokens / 1 or 3 days: a focused project over a day or a long weekend.
200M or 500M tokens / 1 day: heavy agent runs finished in a single day.
500M tokens / 7 or 15 days: continuous agent and coding work over one or two weeks.
1B tokens / 30 days: large workloads or month-long use.

Who it's for

Developers running Claude Code, Cline, Roo Code or Cursor with a custom base URL
Writers and analysts who rely on Claude for long documents and context
Teams that want a fixed budget instead of open-ended API billing

How it works

Choose a token pack and validity period.
Pay with crypto via Cryptomus (USDT, USDC, BTC, ETH, LTC, TRX and more). Your order is confirmed automatically on-chain.
Receive your key, base URL and setup guide by email, usually within 30 minutes during support hours (8:00–22:00 GMT+7).

Important notes

This is a third-party gateway key. It cannot log in to Claude Console and does not work with Anthropic's default API endpoint.
Prompts pass through the gateway before reaching the model. Do not send passwords, secret keys or sensitive customer data.
Tokens are only usable within the pack's validity period. Unused tokens expire and do not carry over.
Warranty: if the key fails during its term, we replace or top up the key first. If that is not possible, we refund the unused tokens. Used tokens are not refundable.
Works with tools that allow a custom base URL (Claude Code, Cursor, Cline, Roo Code, ChatBox, Anthropic/OpenAI-compatible SDKs). Keep your key private.

Frequently asked questions

Is this an official Anthropic API key?

No. It is a third-party key served through a gateway compatible with the Anthropic and OpenAI API formats, with its own base URL.

Which Claude models are included?

Claude Fable 5.1, Opus 5.5, Sonnet 5.5 and Haiku 5.5. One key works for all of them; choose the model in your tool.

Does it work with Claude Code?

Yes. Set the provided base URL and key in Claude Code, Cursor, Cline or any tool that supports a custom endpoint.

What happens when the validity period ends?

Any tokens left are lost and do not carry over. Choose a pack and term close to your real usage.

What is the warranty?

If the key fails during its term, we replace or top it up first. If that is not possible, we refund the unused tokens.

How do I pay?

With crypto via Cryptomus (USDT, USDC, BTC, ETH, LTC, TRX and more). The key is emailed after on-chain confirmation.