The Cleus API

One OpenAI-compatible API for uncensored AI — chat & reasoning, image generation & editing, and video. Pay-as-you-go from your balance. Live at api.cleus.ai.

Requires a Cleus subscription to unlock balance-based usage.

One API, every modality

Chat & reasoning

Cleus Agent, Fast, and two Smartest reasoning models — streaming, OpenAI-compatible, uncensored.

Image generation & editing

Quality+ and Uncensored+ models for text-to-image and image-to-image editing from a URL, base64, or upload.

Video generation

Quality+ text-to-video and image-to-video, delivered as a hosted MP4 via a simple async job.

Agentic tools

Cleus Agent can search the web, generate & edit images, make video, and run code — all in one call.

Available models

Drop-in OpenAI compatibility

Point any OpenAI SDK at https://api.cleus.ai/v1 with your Cleus key. No rewrites.

cURL
curl https://api.cleus.ai/v1/chat/completions \
  -H "Authorization: Bearer $CLEUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "cleus-smartest-2",
    "messages": [{"role": "user", "content": "Explain quantum entanglement simply."}]
  }'
Python
from openai import OpenAI

client = OpenAI(api_key="clsk_live_...", base_url="https://api.cleus.ai/v1")

resp = client.chat.completions.create(
    model="cleus-smartest-2",
    messages=[{"role": "user", "content": "Hello, Cleus!"}],
)
print(resp.choices[0].message.content)

Simple, pay-as-you-go pricing

Text (input + output)$7.20 / 1M tokens
Web search+$0.01 / search
Image generation$0.03 / image
Image edit$0.12 / edit
Video (480p / 720p)$0.24 / $0.48 per clip

Billed directly from your USD balance. No post-paid billing — you only ever spend what you add.

Start building with Cleus

Create an API key in seconds and make your first call.