Image Upscaler API

Image Upscaler API — Upscale images 1.1×–8× with Lanczos3 + optional denoise + sharpen.

What you get

• POST /v1/image/upscale — primary endpoint.
• X-API-Key authentication, per-key rate limits, audit log.
• OpenRouter-backed where AI is involved — no model keys to manage on your side.
• Interactive Swagger docs at api-upscale.knowlez.com/docs.

Plans

• Starter — $9/mo · 500 images included · $0.02/image overage.
• Pro — $29/mo · 5,000 images included · $0.015/image overage.