What is CometAPI?
CometAPI is a model-routing layer: instead of juggling separate API keys and billing for OpenAI, Anthropic, Google, and dozens of smaller model providers, you call one OpenAI-compatible endpoint and switch models by changing a string. It covers text, image, video, and voice models (GPT, Claude, Gemini, Kling, Midjourney-style generation, and more) and bills per request at a discount to official list prices for most models.
Key features
- Single API key and OpenAI-compatible endpoint for 500+ models
- Covers text, image, video, and audio-generation models in one place
- Transparent per-model pricing table, generally ~20% below official rates
- No monthly subscription - pay only for what you use, balance never expires
- Drop-in replacement for the OpenAI SDK (just change the base URL)
- Usage dashboards for request counts, latency, and per-model cost
How to get started
- Create a free account and claim the starter credit
- Generate an API key from the Tokens page
- Point your existing OpenAI-SDK code at https://api.cometapi.com/v1
- Swap the model ID in your requests to access any supported provider
- Top up credit via Stripe as you scale usage
CometAPI pricing
There is no subscription. Standard-provider models (OpenAI, Anthropic, etc.) are billed per token at roughly 80% of the official rate; models without an official API (image/video generators) are billed per call at CometAPI's own rate.
Heavy users (3000+ USD/month) can negotiate further discounts.
| Plan | Price | Best for |
|---|---|---|
| Pay-as-you-go | Per-model, ~20% off official price | Most developers |
| Volume | Custom discount above $3,000/mo | High-usage teams and enterprises |
Our take: Useful for prototyping across providers fast, but you are adding a middleman between you and the model - factor that into latency-sensitive production use.
Prices verified 2026-09. Plans change often — confirm on the official site above before you buy.
Use cases
- Startups that want to A/B test models from different providers without separate contracts
- Developers building multi-model apps (fallback to a cheaper model on rate limits)
- Accessing models without an official API, like certain image/video generators, through one bill
- Cutting vendor-management overhead for small teams
CometAPI vs. alternatives
| Tool | How it compares |
|---|---|
| CometAPI | One API key and one endpoint for 500+ AI models from OpenAI, Anthropic, Google, and more. |
| OpenRouter | OpenRouter is a similar model-aggregation API if you want a different provider mix or routing logic. |
FAQ
Is CometAPI free to use?
CometAPI's plans: Pay-as-you-go, no monthly fee - roughly 20% below official model pricing. Pricing and free-tier limits change over time, so check the official site above for the latest details.
What is CometAPI used for?
One API key and one endpoint for 500+ AI models from OpenAI, Anthropic, Google, and more.
Who is CometAPI best for?
CometAPI is a good fit for startups that want to A/B test models from different providers without separate contracts, or developers building multi-model apps (fallback to a cheaper model on rate limits).
What are the alternatives to CometAPI?
Commonly compared alternatives include OpenRouter, see the comparison above for how they differ.
How much does CometAPI cost?
No monthly fee. You pay per request: token-billed models cost about 20% less than the provider's official price, and models without a public API are billed per call. New accounts get a small free credit to test the service.
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OLast updated: 2026-09 · Reviewed by AIKetra editors · How we evaluate tools · Embed a Featured badge