Claude and Codex API credits explained: tokens, validity and which tools work
If you code with an AI assistant, an API key lets you pay for what you use instead of a monthly plan. The Claude and Codex API plans on Zelyx come as redeem codes with a token allowance or a dollar balance. Here's how to read them and pick one.
What a token is
AI models read and write text in tokens: small pieces of words and code. As a rough rule, a token is about three-quarters of an English word, and code usually takes more tokens per line than plain text.
Both directions count: the files and messages you send in, and everything the model writes back. In coding tools the input side is usually the bigger one, because the tool sends your files and the conversation so far with each request.
Token packs or a dollar balance?
Token packs
A set number of tokens for a set number of days, from 10M for 1 day to 500M for 6 days. Good for a burst of work.
A $100 or $500 balance
Credit that lasts 30 days. Better for steady use, because you're not racing a short deadline.
Codex API packs
The same idea for OpenAI's coding models, if your tools use them.
| Plan | Price | Delivery | Stock | Link |
|---|---|---|---|---|
Claude API · 10M Tokens · 1 Day 10M tokens, 1 day after you activate it |
0.99 USDT | Automatic, right after payment | In stock | View plan |
Claude API · 50M Tokens · 2 Days 50M tokens, 2 days after activation |
3.46 USDT | Automatic, right after payment | In stock | View plan |
Claude API · 100M Tokens · 3 Days 100M tokens, 3 days after activation |
5.27 USDT | Automatic, right after payment | In stock | View plan |
Claude API · 500M Tokens · 6 Days 500M tokens, 6 days after activation |
22.51 USDT | Automatic, right after payment | In stock | View plan |
Claude API · $100 Balance · 30 Days $100 of API balance for 30 days |
2.11 USDT | Automatic, right after payment | In stock | View plan |
Claude API · $500 Balance · 30 Days $500 of API balance for 30 days |
7.13 USDT | Automatic, right after payment | In stock | View plan |
Codex API · 10M Tokens · 1 Day OpenAI coding models: 10M tokens, 1 day |
1.05 USDT | Automatic, right after payment | In stock | View plan |
When the days start
The validity period starts when you activate the redeem code, not when you buy it. You can buy a pack before a busy week and activate it when you sit down to work.
Which tools work with your key
Any tool that lets you enter your own API key. The product pages name tools such as Claude Code, Cursor and VS Code. Your order page has the setup steps, and some plans include a video guide.
Make the tokens last
How far a pack goes depends on how you work. Big files, large repositories and long chats use more tokens per request. A few habits stretch any pack:
- Start a new chat for each task, so old context isn't sent again with every message.
- Point the assistant at the files that matter instead of the whole repository.
- Use a smaller, faster model for simple edits when your tool lets you choose.
- Keep an eye on the usage your tool shows, and stop an agent that's going in circles.
Keep your key safe
- Don't put your key in a public repository, a screenshot or a chat. Anyone who has it can spend your tokens.
- If you think a key has leaked, message @Zelyx224 on Telegram with your order number.
Want the full list with today's prices? See the Claude and Codex API guide.
Questions
Is this the same as a Claude Pro subscription?
No. A subscription is a monthly plan for Claude's own apps. These are API credits for tools that take an API key, measured in tokens or a dollar balance.
Is there a Kimi or DeepSeek option?
Yes, a 50M-token plan for Kimi and DeepSeek models, when it's in stock: see Kimi and DeepSeek API credits.
What if the key stops working before it runs out?
Open a dispute from your order page, or message @Zelyx224 on Telegram.
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