"Credits" is one of the most overloaded words in AI pricing. The same word gets used for a ChatGPT-style app allowance, a prepaid developer balance, a cloud promotion, and a startup grant. Mixing them up is how people end up buying the wrong plan or chasing "free credit" offers that don't exist.
Here is a plain breakdown of the main kinds, how they're metered, and how to find legitimate free ones.
1. App credits (consumer and prosumer tools)
Many image, video, and chat apps sell a monthly plan that includes a fixed number of credits. Each generation, upscale, or long-context request costs some of them. Key points:
- They are tied to one product and usually can't be used anywhere else.
- They often reset monthly and may not roll over.
- The "cost per credit" varies by action, so compare plans by what you actually do (e.g. images per month), not by raw credit count.
2. API credits (developer billing)
API credits are a prepaid or granted dollar balance on a developer platform. Every API call is metered, usually per million input and output tokens for text models, and the cost is deducted from that balance.
This is completely separate from a chat subscription. Paying for a chat app does not give you API credits, and API credits don't unlock the chat app.
To estimate cost, you need two numbers per model: the input price and the output price per 1M tokens. A quick sanity check: a workload of 1M input tokens plus 250K output tokens costs input_price + 0.25 × output_price. Output tokens are often several times more expensive than input, so verbose responses add up fast.
3. Official vs third-party channels
The same model is often available both from the original provider and from third-party gateways and routers. Prices, rate limits, and terms can differ. Before you switch to a cheaper channel, check:
- whether the listed price is per token at the same unit,
- data handling and retention terms,
- whether features you rely on (tools, caching, batch) are supported.
4. Where real free credits come from
Legitimate free credits generally come from a short list of sources:
- Free tiers on consumer apps (limited daily or monthly usage).
- Free or trial API usage on some developer platforms, which can change or end without much notice.
- Cloud promotional credits for new accounts.
- Startup programs, typically via accelerators, VCs, or cloud partner programs, with eligibility rules.
Be skeptical of anything promising a fixed signup bonus from an unofficial site. Always apply on the provider's own pages.
If you'd rather not track all of this yourself, directories such as AI Credits collect free tiers, startup credit programs, and official-versus-third-party API prices in one place and link out to the official pages.
5. A simple decision checklist
- Are you using a product (chat, image, video app) or building with an API? That decides app credits vs API credits.
- Estimate monthly usage in the unit that's actually billed (images, seconds, or tokens).
- Compare at least the official price and one alternative channel.
- Check free tiers and startup programs before paying, but verify every offer at the source.
Understanding which kind of credit you're dealing with usually saves more money than any discount code.
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