Opten is an AI prompt optimizer for image and video generation. One click scores your prompt 0–100 for the exact model you're using, shows what to fix, and enhances it automatically. 61 models supported: Midjourney, Nano Banana, Veo 3.1, Kling, Seedance, Flux, GPT Image, Runway, Wan, LTX-2 + 50 more. Every model has its own rules — Opten knows them all. Works inside syntx.ai, higgsfield.ai, freepik.com and magnific.com. No copy-paste, no tab switching.