x4PayAPI Market

LLM inference APIs for AI agents

LLM inference APIs sell a model call the way other listings sell a lookup: one request, one price, no monthly seat. This page keeps Intelligence, Tools and Data listings that say LLM, chat completion, language model or embedding, or whose name says inference or GPT. A summary of a news article is not included just because it summarises something. The agent finds the listing through the free catalogue, then pays the provider over x402 in USDC on Base, Solana or Algorand. No API key is involved. Settlement-verified means a paid route with an on-chain receipt, and the examples are claimed listings that have one. Unclaimed (bazaar) imports are labelled and sit below the examples. Listing a model endpoint is free and the provider keeps 100% of each settled call. API and endpoint counts are read from the live catalogue with this rule, so they are not a forecast.

29 APIs and 266 endpoints match this page. 29 are settlement-verified: a paid route with an on-chain receipt.

Settlement-verified examples

Unclaimed (bazaar) imports

These rows were imported and the provider has not claimed them. They are not the examples above.

Related pages

Questions

Which listings count as LLM inference?

Intelligence, Tools and Data listings that mention LLM, chat completion, language model or embedding, or whose name says inference or GPT. Tags llm, inference and embedding match as well.

How does an agent pay for a model call?

The same way it pays for any other listing. The provider returns HTTP 402, and the agent pays in USDC on Base, Solana or Algorand over x402. No API key and no subscription.

Is every route on an LLM listing settlement-verified?

No. Settlement-verified means a paid route with an on-chain receipt. The example links that receipt. Other routes on the listing are separate.