# FAQ

> Direct answers to the questions we are actually asked.

_Source: https://aiprimetech.io/docs/resources/faq/ · Home > Docs > Resources_


## Is this the official Anthropic API?

No. ClaudeAPIKey.dev is an independently operated gateway that resells API capacity and exposes an Anthropic-compatible interface. We are not affiliated with, endorsed by or sponsored by Anthropic. If you need a contract with Anthropic itself, use the official API.


## Will my existing code work?

If it uses the Anthropic or OpenAI SDK, yes — change the base URL and the key. See [Migrating from Anthropic](/docs/guides/migration-from-anthropic/) or [from OpenAI](/docs/guides/migration-from-openai/).


## Do credits expire?

No. Prepaid credits stay on the account until spent. Unlimited plans are different — they run for a fixed window and end when it expires.


## Which is cheaper for me, credits or a plan?

Credits suit bursty or low-volume use because you pay only for tokens. A flat-rate plan wins when you are running an agent for hours a day, where per-token billing on a long session outruns the plan price. See [Plans](/docs/billing/plans/).


## Can I use this with Claude Code?

Yes — two environment variables. It is the most common setup. See [Claude Code](/docs/guides/claude-code/).


## Why is my bill higher than I estimated?

Almost always context growth. Every turn resends the whole conversation, so a long agent session pays for its history repeatedly. See [Context management](/docs/guides/context-management/).


## Do you support tool use / function calling?

Yes, in both formats. See [Tool use](/docs/api-reference/tool-use/).


## Do you store my prompts?

Request metadata needed for billing and abuse prevention is retained. Do not send data you are contractually barred from sharing with a third-party processor — see [Security and privacy](/docs/resources/security/).


## What happens if a model is deprecated?

Model ids are pinned and do not silently change under you. Retirements are announced in the [changelog](/docs/resources/changelog/).


## How do I get support?

[support@claudeapikey.dev](mailto:support@claudeapikey.dev). Include the endpoint, model id, status code and error body — never your API key.

- [Troubleshooting](https://aiprimetech.io/docs/guides/troubleshooting/) — Symptom-first index
- [Pricing](https://aiprimetech.io/docs/billing/pricing/) — How billing works


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_ClaudeAPIKey.dev is an independently operated, Anthropic-compatible API gateway. Not affiliated with Anthropic._