Services · inference-gateway

PPQ.AI (PayPerQ)

Pay-per-query access to hundreds of frontier models over Lightning / L402 — no account, no API key, roughly a cent and a half a query.

service PayPerQ consume lightning / L402 (no account) KYC none (Lightning path) Links verified 2026-06-02

Repo Docs Site X @PPQdotAI

What it is

PPQ.AI (PayPerQ) is a gateway to hundreds of frontier chat, image, video, and audio models (OpenAI, Anthropic, Perplexity, Meta, and more) that you can pay for per request over Lightning / L402 with no account or API key required. Average query cost is around 1.5¢, with top-ups from about 10¢. It is another live instance of “an agent pays for its own inference” — the simplest on-ramp for an agent to buy frontier-model calls without provisioning provider accounts.

It also publishes a /llms.txt and an API surface designed to be consumed directly by agents.

When to use it

Quick, accountless access to many models behind one pay-per-call endpoint.
Agents that need to buy inference on demand without managing per-provider API keys.
Lightning-native metering of model usage.

Dependencies & payment

Dependencies: a Lightning / L402 wallet or L402-capable client — no account and no API key on the Lightning path — or a funded top-up balance; the optional ppq-private-mode-proxy adds TEE-backed private mode. Payment: Lightning / L402, pay-per-query (~1.5¢ a query; top-ups from ~10¢); credit-card funding is available but adds KYC.

Quick start

Use the no-account L402 flow or top up a balance, then call the API documented at ppq.ai/api-docs (machine pointer at ppq.ai/llms.txt). The open-source ppq-private-mode-proxy repo provides a local encryption proxy for TEE-backed “private mode” models; the core service itself is not open-source.

Gotchas

It is a centralized custodial gateway to third-party providers — PPQ proxies your prompts upstream. Only the optional “private mode” (TEE + local encryption proxy) keeps content unreadable to PPQ.
The no-account path stores balance and usage locally — losing local state or the payment credential can lose access.
Funding by credit card introduces KYC; the Lightning/no-account path is the privacy-preserving one.