{"models":[{"id":"fal/kling-4.0","type":"video","name":"Kling 4.0","model_id":"kling/v4","capabilities":["video_generation","image_to_video","last_frame","reference_images","audio"],"speed":"slow","quality":"best","context_window":0,"description":"Kuaishou Kling 4.0 served via fal. One id covers text-, image- and reference-to-video: reference images, clips or elements select reference-to-video, a source image selects image-to-video (with an optional last_image), otherwise text-to-video. Native audio is always on.\nBilled on fal's metered units: per second of output at the requested resolution; video references bill at the video-input rate on input plus output length.","params":{"video":{"aspect_ratios":["16:9","9:16","1:1","21:9"],"resolutions":["720p","1080p"],"max_duration":30,"parameters":[{"name":"duration","type":"integer","description":"Clip length in seconds (3-30); default 5. Ignored with multi_prompt, where the clip is the sum of the shot durations.","example":"5"},{"name":"resolution","type":"string","description":"Output resolution; default 1080p. 720p bills at the lower per-second rate.","enum":["720p","1080p"],"example":"1080p"},{"name":"aspect_ratio","type":"string","description":"Output aspect ratio; default 16:9. Ignored for image-to-video, which follows the first frame. Reference-to-video also takes \"auto\".","enum":["16:9","9:16","1:1","21:9"]},{"name":"multi_prompt","type":"array","description":"Multi-shot storyboard: a list of {prompt, duration} shots chained into one clip. Replaces the single prompt."},{"name":"video_urls","type":"array","description":"Reference-to-video: up to 5 reference clips (3-30s each, 30s combined), cited in the prompt as @Video1, @Video2. Video references bill at fal's video-input rate on input plus output length."},{"name":"elements","type":"array","description":"Reference-to-video: up to 7 characters or objects, cited as @Element1, @Element2 (fal's element objects, image or video based)."}]}},"pricing":{"billing_unit":"per_second_by_resolution","rates":[{"unit":"per_second","amount":0.235,"dimensions":{"resolution":"1080p"}},{"unit":"per_second","amount":0.157,"dimensions":{"resolution":"720p"}}],"price_per_second_by_resolution":{"1080p":0.235,"720p":0.157}},"region":"US","model":"kling-4.0","family":"kling-4.0","provider":{"slug":"fal","display_name":"fal.ai","owner_country":"US"},"service_route":{"id":"fal/api-us","adapter":"fal"},"maker":{"slug":"kuaishou","display_name":"Kuaishou","country":"CN"},"country":"United States","compliance":{"residency":"US","country":"United States","inference_location":"US","zdr":{"logging":true,"moderation":true,"caching":null,"training":false,"subprocessors":null},"training":"no","logging":"other","retention_days":1,"moderation":"default_on","caching":"unknown","content_storage":"retained","dpa_available":true,"third_party_access":true,"transfer_mechanism":"sccs","route_id":"fal/api-us"},"references":[{"kind":"model_card","url":"https://bernama.com/en/press/news.php?id=2622471","created_at":"2026-10-26T08:59:20.470394Z","updated_at":"2026-10-26T08:59:20.470394Z"}],"input_modalities":["text","image","video"],"output_modalities":["video"]},{"id":"fal/kling-4.0-edit","type":"video","name":"Kling 4.0 Edit","model_id":"kling/v4/video-to-video/edit","capabilities":["video_generation","video_editing","audio"],"speed":"slow","quality":"best","context_window":0,"description":"Kuaishou Kling 4.0 video editing served via fal: pass the clip to edit as video (3-30s, at least 700px on each side) and an instruction citing it as @Video1. Output defaults to the source length, with native audio.\nBilled on fal's metered units: input plus output length at the video-input rate, at least twice the output length, so the listed per-second rates are per second of output.","params":{"video":{"resolutions":["720p","1080p"],"max_duration":30,"parameters":[{"name":"duration","type":"integer","description":"Output length in seconds (3-30); defaults to the source clip's length."},{"name":"resolution","type":"string","description":"Output resolution; default 1080p. 720p bills at the lower per-second rate.","enum":["720p","1080p"],"example":"1080p"},{"name":"image_urls","type":"array","description":"Reference images for the edit, cited in the prompt as @Image1, @Image2."},{"name":"elements","type":"array","description":"Characters or objects to place, cited as @Element1, @Element2 (fal's element objects)."}]}},"pricing":{"billing_unit":"per_second_by_resolution","rates":[{"unit":"per_second","amount":0.282,"dimensions":{"resolution":"1080p"}},{"unit":"per_second","amount":0.188,"dimensions":{"resolution":"720p"}}],"price_per_second_by_resolution":{"1080p":0.282,"720p":0.188}},"region":"US","model":"kling-4.0-edit","family":"kling-4.0-edit","provider":{"slug":"fal","display_name":"fal.ai","owner_country":"US"},"service_route":{"id":"fal/api-us","adapter":"fal"},"maker":{"slug":"kuaishou","display_name":"Kuaishou","country":"CN"},"country":"United States","compliance":{"residency":"US","country":"United States","inference_location":"US","zdr":{"logging":true,"moderation":true,"caching":null,"training":false,"subprocessors":null},"training":"no","logging":"other","retention_days":1,"moderation":"default_on","caching":"unknown","content_storage":"retained","dpa_available":true,"third_party_access":true,"transfer_mechanism":"sccs","route_id":"fal/api-us"},"references":[{"kind":"model_card","url":"https://bernama.com/en/press/news.php?id=2622471","created_at":"2026-10-26T08:59:20.470394Z","updated_at":"2026-10-26T08:59:20.470394Z"}],"input_modalities":["text","image","video"],"output_modalities":["video"]}],"total":2,"offset":0,"limit":50}