# Api18.dev

> Api18.dev is an uncensored REST API for AI image and video generation — text-to-image, image editing, text-to-video and image-to-video — with no content restrictions on prompts (+18 / NSFW supported; illegal content prohibited). One Bearer key, one JSON POST, no polling. Pay-as-you-go in USD; new accounts get $10 in free playground credit; top up paid balance in USDT on Solana or Tron.

## About
- Positioning: a hosted, uncensored alternative to filtered APIs (OpenAI, hosted Stability, Midjourney) and to self-hosting Stable Diffusion.
- No prompt moderation; adult/+18 use is permitted. You are responsible for lawful use.
- Payments: USDT on Solana or Tron. No card or identity verification required to start.
- Free to try: $10 welcome credit works in the dashboard playground; the API runs on paid balance.

## Quickstart
- Base URL: https://api18.dev
- Auth: `Authorization: Bearer api18_xxxxxxxxxxxxxxxx` (create a key in the dashboard).
- Video models POST to `/v1/video/generations`; image models POST to `/v1/images/generations`.
- The POST returns a job with `status` and `id`. Poll `GET /v1/jobs/{id}` until `status` is `completed`, then download from `data[].url`.

## Models
- [centaurus-1.0-text-to-video](https://api18.dev/docs/models/centaurus-1.0-text-to-video/llms.txt) (Centaurus 1.0, video) — Cinematic text-to-video with crisp detail, stable motion and strong instruction-following. 720p/1080p, multiple aspect ratios, 2–15s clips. POST /v1/video/generations. $0.20/s @ 720p · $0.30/s @ 1080p (× duration).
- [centaurus-1.0-image-to-video](https://api18.dev/docs/models/centaurus-1.0-image-to-video/llms.txt) (Centaurus 1.0, video) — Animate a reference image into a cinematic clip. Aspect ratio matches the source. 720p/1080p, 3–15s. POST /v1/video/generations. $0.28/s @ 720p · $0.56/s @ 1080p (× duration).
- [hera-1.0-image-to-video](https://api18.dev/docs/models/hera-1.0-image-to-video/llms.txt) (Hera 1.0, video) — Cinematic image-to-video with multi-shot narrative support. 720p/1080p, 5/10/15s clips. POST /v1/video/generations. $0.20/s @ 720p · $0.30/s @ 1080p (× duration).
- [hera-1.0-image-edit](https://api18.dev/docs/models/hera-1.0-image-edit/llms.txt) (Hera 1.0, image) — Prompt-driven image editing. Upload 1–3 reference images and describe the change. POST /v1/images/generations. $0.070 / run.
- [hera-1.0-text-to-image](https://api18.dev/docs/models/hera-1.0-text-to-image/llms.txt) (Hera 1.0, image) — Multi-modal text-to-image. 1k/2k resolutions, 9 aspect ratios, generate up to 9 images per call. POST /v1/images/generations. $0.056 / image (× num_images).
- [zeus-1.0-image-to-video](https://api18.dev/docs/models/zeus-1.0-image-to-video/llms.txt) (Zeus 1.0, video) — Turn an image into a high-quality video with smooth motion. 480p/720p, 5s or 8s clips. POST /v1/video/generations. $0.30 (480p, 5s) · $0.48 (480p, 8s) · $0.60 (720p, 5s) · $0.96 (720p, 8s) / run.
- [zeus-1.0-image-to-video-480p](https://api18.dev/docs/models/zeus-1.0-image-to-video-480p/llms.txt) (Zeus 1.0, video) — Budget image-to-video at 480p, 5s clips. Supports a negative prompt and automatic prompt expansion. POST /v1/video/generations. $0.40 (480p, 5s) / run.

## Guides & articles
- [The Best Uncensored AI Image Generation API in 2026](https://api18.dev/blog/best-uncensored-ai-image-generation-api) — Api18.dev is an uncensored text-to-image API with no content filters, a one-call REST endpoint, pay-per-image pricing, and $10 free playground credit. Most mainstream APIs (OpenAI, Stability hosted, Midjourney) block adult and NSFW prompts.
- [NSFW AI Video Generation API: A Developer's Guide](https://api18.dev/blog/nsfw-ai-video-generation-api-guide) — Api18.dev exposes text-to-video and image-to-video models with no content filter. Use POST /v1/generate?wait=true for a single synchronous call that returns a finished video URL — no polling. Billed per second of output in USD; top up in USDT.
- [How to Generate Adult Content with an API (No Restrictions)](https://api18.dev/blog/how-to-generate-adult-content-with-an-api) — Sign up, grab a Bearer key, POST a prompt to /v1/generate?wait=true, and read the output URL from data[0].url. No prompt filtering is applied. $10 free playground credit to start; pay-per-call top-ups in USDT.
- [Uncensored vs. Filtered AI APIs: What Developers Need to Know](https://api18.dev/blog/uncensored-vs-filtered-ai-apis) — Filtered APIs reject prompts at the moderation layer and in their terms; uncensored APIs like Api18.dev pass your prompt straight to the model. Choose uncensored when your product needs adult/NSFW or creative-freedom output that filtered providers ban.
- [Top AI APIs Without Content Moderation (2026)](https://api18.dev/blog/top-ai-apis-without-content-moderation) — Few hosted APIs skip content moderation. Api18.dev is built for it: uncensored text-to-image, text-to-video and image-to-video, a single sync endpoint, pay-per-call USD pricing, USDT payments, and $10 free playground credit.
- [Pay-Per-Call AI API with Crypto: USDT on Solana & Tron](https://api18.dev/blog/pay-per-call-ai-api-with-crypto-usdt) — Api18.dev bills per API call in USD and lets you top up balance with USDT on Solana or Tron — fast, low-fee, and no card required. New accounts also get $10 in free playground credit.
- [Text-to-Video API with No Content Filters](https://api18.dev/blog/text-to-video-api-no-content-filters) — Api18.dev's text-to-video models take a prompt and return a video URL with no content filtering. Control resolution, aspect ratio, duration and seed. Billed per second; one synchronous call via /v1/generate?wait=true.
- [Image-to-Video API for Adult & NSFW Use Cases](https://api18.dev/blog/image-to-video-api-for-adult-nsfw) — Api18.dev image-to-video models animate a reference image URL into a clip with no content filter. Pass a public image URL plus a motion prompt; receive a video URL. Ideal for adult/NSFW pipelines that filtered APIs block.
- [Building an Uncensored AI Companion App: The Backend API Guide](https://api18.dev/blog/build-uncensored-ai-companion-app-backend) — Build an AI companion backend with Api18.dev for uncensored image/video. Keep the Bearer key server-side, call /v1/generate?wait=true per user request, cache outputs, and meter cost per call. $10 free playground credit to prototype.
- [No-KYC AI Image API: Sign Up and Pay with Crypto](https://api18.dev/blog/no-kyc-ai-image-api-sign-up-with-crypto) — Api18.dev needs only an email to sign up and accepts USDT (Solana/Tron) for top-ups — no card and no identity verification to start generating. New accounts get $10 free playground credit.
- [Add Uncensored Image Generation to Your App in 5 Minutes](https://api18.dev/blog/add-uncensored-image-generation-in-5-minutes) — Get a key, then POST { model, prompt } to /v1/generate?wait=true with a Bearer header and read data[0].url. That's the whole integration — no SDK, no polling. cURL, JavaScript and Python snippets included.
- [The Best Stable Diffusion Alternative API for NSFW (Hosted)](https://api18.dev/blog/best-stable-diffusion-alternative-api-nsfw) — Instead of self-hosting Stable Diffusion for NSFW, use Api18.dev: a hosted uncensored image API with no GPU ops, no content filter, one REST call, and pay-per-image USD pricing. $10 free playground credit.
- [Adult Content Generation API Pricing Compared (2026)](https://api18.dev/blog/adult-content-generation-api-pricing-compared) — Api18.dev prices every call in USD with no subscription or minimums — per image for image models, per second for video. Failed calls are free, balance is topped up in USDT, and new accounts get $10 free playground credit.
- [Unfiltered AI Art API: Prompts, Limits & Best Practices](https://api18.dev/blog/unfiltered-ai-art-api-prompts-limits-best-practices) — With an unfiltered art API, prompt quality drives results. Use specific subject + style + lighting, set a seed for reproducibility, pick aspect ratio/resolution per use, and design around output retention and the 2500-char prompt limit.
- [Uncensored & +18 AI Generation API: The Complete FAQ](https://api18.dev/blog/uncensored-plus18-ai-generation-api-faq) — Api18.dev is an uncensored +18 image and video generation API: no prompt moderation, one REST call, pay-per-call in USD, USDT (Solana/Tron) top-ups, and $10 free playground credit. This FAQ covers content, payments, keys and integration.

## Full docs
- [Full LLM-ready reference](https://api18.dev/llms-full.txt): every model in one file.
- [Articles, LLM-ready](https://api18.dev/llms-articles.txt): every guide summarized for citation.
- Per-model references: https://api18.dev/docs/models/{model-id}/llms.txt
- [Docs site](https://api18.dev/docs)
- [Blog](https://api18.dev/blog)