Generate an image from text in under 5 seconds. Four style tiers backed by curated $0.01 Venice models: 'fast' (z-image-turbo, default), 'creative' (chroma), 'anime' (wai-Illustrious), 'sd35' (venice-sd35). Returns a permanent fal-hosted PNG URL. SFW text-to-image / AI art at the cheapest tier; for higher quality use image-generate-pro ($0.05), image-generate-ultra ($0.20), or named model endpoints like flux-2-pro, seedream, recraft, qwen-image, gpt-image, and nano-banana.