[{"data":1,"prerenderedAt":808},["ShallowReactive",2],{"docs-/zh/docs/fast-models":3},{"id":4,"title":5,"body":6,"description":801,"extension":802,"meta":803,"navigation":372,"path":804,"seo":805,"stem":806,"__hash__":807},"content/zh/docs/fast-models.md","Fast 系列模型 - Seedance 2.0",{"type":7,"value":8,"toc":791},"minimark",[9,14,35,40,109,112,122,126,132,173,178,195,198,201,207,214,218,338,347,351,647,651,733,737,757,760,787],[10,11,13],"h1",{"id":12},"fast-系列模型","Fast 系列模型",[15,16,17,18,22,23,26,27,30,31,34],"p",{},"Seedance 2.0 的每一种模式都提供 ",[19,20,21],"strong",{},"Standard"," 与 ",[19,24,25],{},"Fast"," 两档。Fast 系列以",[19,28,29],{},"更快的生成速度","和",[19,32,33],{},"更低的按秒计费成本","换取轻微的画质权衡，非常适合快速迭代、批量生产与 A/B 测试。",[36,37,39],"h2",{"id":38},"三个-fast-模型","三个 Fast 模型",[41,42,43,59],"table",{},[44,45,46],"thead",{},[47,48,49,53,56],"tr",{},[50,51,52],"th",{},"Fast Model ID",[50,54,55],{},"对应 Standard",[50,57,58],{},"用途",[60,61,62,79,94],"tbody",{},[47,63,64,71,76],{},[65,66,67],"td",{},[68,69,70],"code",{},"seedance-2.0-fast-text-to-video",[65,72,73],{},[68,74,75],{},"seedance-2.0-text-to-video",[65,77,78],{},"纯文本生成视频",[47,80,81,86,91],{},[65,82,83],{},[68,84,85],{},"seedance-2.0-fast-image-to-video",[65,87,88],{},[68,89,90],{},"seedance-2.0-image-to-video",[65,92,93],{},"1 或 2 张图驱动",[47,95,96,101,106],{},[65,97,98],{},[68,99,100],{},"seedance-2.0-fast-reference-to-video",[65,102,103],{},[68,104,105],{},"seedance-2.0-reference-to-video",[65,107,108],{},"多模态合成",[15,110,111],{},"所有 Fast 模型共用同一个端点和同一套参数：",[113,114,119],"pre",{"className":115,"code":117,"language":118},[116],"language-text","POST https://api.evolink.ai/v1/videos/generations\n","text",[68,120,117],{"__ignoreMap":121},"",[36,123,125],{"id":124},"与-standard-的差异","与 Standard 的差异",[15,127,128,131],{},[19,129,130],{},"完全一致","：",[133,134,135,139,142,161,164,167],"ul",{},[136,137,138],"li",{},"端点",[136,140,141],{},"请求体结构（所有参数名、类型、默认值）",[136,143,144,145,148,149,152,153,156,157,160],{},"允许的画质（",[68,146,147],{},"480p"," / ",[68,150,151],{},"720p","）、时长（",[68,154,155],{},"4","–",[68,158,159],{},"15"," 秒）、画面比例",[136,162,163],{},"输入素材的数量和格式限制",[136,165,166],{},"响应结构、任务生命周期、Webhook 回调格式",[136,168,169,172],{},[68,170,171],{},"prompt"," 长度上限（中文 500 / 英文 1000）",[15,174,175,131],{},[19,176,177],{},"不同之处",[133,179,180,183,186,189],{},[136,181,182],{},"生成速度更快",[136,184,185],{},"按秒计费的单价更低",[136,187,188],{},"画质细节略低于 Standard（在大多数场景肉眼难以分辨）",[136,190,191,194],{},[68,192,193],{},"fast-image-to-video"," 的首帧 / 首尾帧模式由模型自动判断（传 1 张 = 首帧驱动；传 2 张 = 首尾帧过渡），无需额外字段",[36,196,197],{"id":197},"推荐工作流",[15,199,200],{},"一个典型的生产流水线会同时使用两档：",[113,202,205],{"className":203,"code":204,"language":118},[116],"开发 / 调试 prompt\n    ↓  (使用 Fast 模型快速迭代)\n    ↓\n筛选出效果满意的 prompt 和参数组合\n    ↓  (切换 model 字段，其它参数不变)\n    ↓\n最终交付\n    ↓  (使用 Standard 模型生成高质量成片)\n",[68,206,204],{"__ignoreMap":121},[15,208,209,210,213],{},"代码层面只需替换 ",[68,211,212],{},"model"," 字段，无需重写任何其它逻辑。",[36,215,217],{"id":216},"示例fast-文生视频-web_search","示例：Fast 文生视频 + web_search",[113,219,223],{"className":220,"code":221,"language":222,"meta":121,"style":121},"language-bash shiki shiki-themes github-dark","curl -X POST https://api.evolink.ai/v1/videos/generations \\\n  -H \"Authorization: Bearer YOUR_API_KEY\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\n    \"model\": \"seedance-2.0-fast-text-to-video\",\n    \"prompt\": \"介绍 2026 年最新上市的电动跑车，展现流线型外观和内饰科技感。\",\n    \"duration\": 6,\n    \"quality\": \"720p\",\n    \"aspect_ratio\": \"16:9\",\n    \"generate_audio\": true,\n    \"model_params\": {\n      \"web_search\": true\n    }\n  }'\n","bash",[68,224,225,248,259,269,278,284,290,296,302,308,314,320,326,332],{"__ignoreMap":121},[226,227,230,234,238,242,245],"span",{"class":228,"line":229},"line",1,[226,231,233],{"class":232},"svObZ","curl",[226,235,237],{"class":236},"sDLfK"," -X",[226,239,241],{"class":240},"sU2Wk"," POST",[226,243,244],{"class":240}," https://api.evolink.ai/v1/videos/generations",[226,246,247],{"class":236}," \\\n",[226,249,251,254,257],{"class":228,"line":250},2,[226,252,253],{"class":236},"  -H",[226,255,256],{"class":240}," \"Authorization: Bearer YOUR_API_KEY\"",[226,258,247],{"class":236},[226,260,262,264,267],{"class":228,"line":261},3,[226,263,253],{"class":236},[226,265,266],{"class":240}," \"Content-Type: application/json\"",[226,268,247],{"class":236},[226,270,272,275],{"class":228,"line":271},4,[226,273,274],{"class":236},"  -d",[226,276,277],{"class":240}," '{\n",[226,279,281],{"class":228,"line":280},5,[226,282,283],{"class":240},"    \"model\": \"seedance-2.0-fast-text-to-video\",\n",[226,285,287],{"class":228,"line":286},6,[226,288,289],{"class":240},"    \"prompt\": \"介绍 2026 年最新上市的电动跑车，展现流线型外观和内饰科技感。\",\n",[226,291,293],{"class":228,"line":292},7,[226,294,295],{"class":240},"    \"duration\": 6,\n",[226,297,299],{"class":228,"line":298},8,[226,300,301],{"class":240},"    \"quality\": \"720p\",\n",[226,303,305],{"class":228,"line":304},9,[226,306,307],{"class":240},"    \"aspect_ratio\": \"16:9\",\n",[226,309,311],{"class":228,"line":310},10,[226,312,313],{"class":240},"    \"generate_audio\": true,\n",[226,315,317],{"class":228,"line":316},11,[226,318,319],{"class":240},"    \"model_params\": {\n",[226,321,323],{"class":228,"line":322},12,[226,324,325],{"class":240},"      \"web_search\": true\n",[226,327,329],{"class":228,"line":328},13,[226,330,331],{"class":240},"    }\n",[226,333,335],{"class":228,"line":334},14,[226,336,337],{"class":240},"  }'\n",[339,340,341],"blockquote",{},[15,342,343,346],{},[68,344,345],{},"model_params.web_search"," 是 text-to-video 系列（含 Fast）独有的参数，仅在模型实际触发联网时额外计费。",[36,348,350],{"id":349},"示例fast-图生视频自动判别首帧-首尾帧","示例：Fast 图生视频（自动判别首帧 / 首尾帧）",[113,352,356],{"className":353,"code":354,"language":355,"meta":121,"style":121},"language-python shiki shiki-themes github-dark","import requests\n\n# 传 1 张 → 首帧驱动\nresponse = requests.post(\n    \"https://api.evolink.ai/v1/videos/generations\",\n    headers={\n        \"Authorization\": \"Bearer YOUR_API_KEY\",\n        \"Content-Type\": \"application/json\"\n    },\n    json={\n        \"model\": \"seedance-2.0-fast-image-to-video\",\n        \"prompt\": \"镜头缓慢推进，画面逐渐鲜活起来\",\n        \"image_urls\": [\"https://example.com/scene.jpg\"],\n        \"duration\": 5\n    }\n)\n\n# 传 2 张 → 自动切换为首尾帧过渡\nresponse = requests.post(\n    \"https://api.evolink.ai/v1/videos/generations\",\n    headers={\n        \"Authorization\": \"Bearer YOUR_API_KEY\",\n        \"Content-Type\": \"application/json\"\n    },\n    json={\n        \"model\": \"seedance-2.0-fast-image-to-video\",\n        \"prompt\": \"两个场景之间的平滑过渡\",\n        \"image_urls\": [\n            \"https://example.com/first.jpg\",\n            \"https://example.com/last.jpg\"\n        ],\n        \"duration\": 6\n    }\n)\n","python",[68,357,358,368,374,380,391,399,410,423,433,438,447,459,471,485,495,500,506,511,517,526,533,542,553,562,567,576,587,599,607,615,621,627,637,642],{"__ignoreMap":121},[226,359,360,364],{"class":228,"line":229},[226,361,363],{"class":362},"snl16","import",[226,365,367],{"class":366},"s95oV"," requests\n",[226,369,370],{"class":228,"line":250},[226,371,373],{"emptyLinePlaceholder":372},true,"\n",[226,375,376],{"class":228,"line":261},[226,377,379],{"class":378},"sAwPA","# 传 1 张 → 首帧驱动\n",[226,381,382,385,388],{"class":228,"line":271},[226,383,384],{"class":366},"response ",[226,386,387],{"class":362},"=",[226,389,390],{"class":366}," requests.post(\n",[226,392,393,396],{"class":228,"line":280},[226,394,395],{"class":240},"    \"https://api.evolink.ai/v1/videos/generations\"",[226,397,398],{"class":366},",\n",[226,400,401,405,407],{"class":228,"line":286},[226,402,404],{"class":403},"s9osk","    headers",[226,406,387],{"class":362},[226,408,409],{"class":366},"{\n",[226,411,412,415,418,421],{"class":228,"line":292},[226,413,414],{"class":240},"        \"Authorization\"",[226,416,417],{"class":366},": ",[226,419,420],{"class":240},"\"Bearer YOUR_API_KEY\"",[226,422,398],{"class":366},[226,424,425,428,430],{"class":228,"line":298},[226,426,427],{"class":240},"        \"Content-Type\"",[226,429,417],{"class":366},[226,431,432],{"class":240},"\"application/json\"\n",[226,434,435],{"class":228,"line":304},[226,436,437],{"class":366},"    },\n",[226,439,440,443,445],{"class":228,"line":310},[226,441,442],{"class":403},"    json",[226,444,387],{"class":362},[226,446,409],{"class":366},[226,448,449,452,454,457],{"class":228,"line":316},[226,450,451],{"class":240},"        \"model\"",[226,453,417],{"class":366},[226,455,456],{"class":240},"\"seedance-2.0-fast-image-to-video\"",[226,458,398],{"class":366},[226,460,461,464,466,469],{"class":228,"line":322},[226,462,463],{"class":240},"        \"prompt\"",[226,465,417],{"class":366},[226,467,468],{"class":240},"\"镜头缓慢推进，画面逐渐鲜活起来\"",[226,470,398],{"class":366},[226,472,473,476,479,482],{"class":228,"line":328},[226,474,475],{"class":240},"        \"image_urls\"",[226,477,478],{"class":366},": [",[226,480,481],{"class":240},"\"https://example.com/scene.jpg\"",[226,483,484],{"class":366},"],\n",[226,486,487,490,492],{"class":228,"line":334},[226,488,489],{"class":240},"        \"duration\"",[226,491,417],{"class":366},[226,493,494],{"class":236},"5\n",[226,496,498],{"class":228,"line":497},15,[226,499,331],{"class":366},[226,501,503],{"class":228,"line":502},16,[226,504,505],{"class":366},")\n",[226,507,509],{"class":228,"line":508},17,[226,510,373],{"emptyLinePlaceholder":372},[226,512,514],{"class":228,"line":513},18,[226,515,516],{"class":378},"# 传 2 张 → 自动切换为首尾帧过渡\n",[226,518,520,522,524],{"class":228,"line":519},19,[226,521,384],{"class":366},[226,523,387],{"class":362},[226,525,390],{"class":366},[226,527,529,531],{"class":228,"line":528},20,[226,530,395],{"class":240},[226,532,398],{"class":366},[226,534,536,538,540],{"class":228,"line":535},21,[226,537,404],{"class":403},[226,539,387],{"class":362},[226,541,409],{"class":366},[226,543,545,547,549,551],{"class":228,"line":544},22,[226,546,414],{"class":240},[226,548,417],{"class":366},[226,550,420],{"class":240},[226,552,398],{"class":366},[226,554,556,558,560],{"class":228,"line":555},23,[226,557,427],{"class":240},[226,559,417],{"class":366},[226,561,432],{"class":240},[226,563,565],{"class":228,"line":564},24,[226,566,437],{"class":366},[226,568,570,572,574],{"class":228,"line":569},25,[226,571,442],{"class":403},[226,573,387],{"class":362},[226,575,409],{"class":366},[226,577,579,581,583,585],{"class":228,"line":578},26,[226,580,451],{"class":240},[226,582,417],{"class":366},[226,584,456],{"class":240},[226,586,398],{"class":366},[226,588,590,592,594,597],{"class":228,"line":589},27,[226,591,463],{"class":240},[226,593,417],{"class":366},[226,595,596],{"class":240},"\"两个场景之间的平滑过渡\"",[226,598,398],{"class":366},[226,600,602,604],{"class":228,"line":601},28,[226,603,475],{"class":240},[226,605,606],{"class":366},": [\n",[226,608,610,613],{"class":228,"line":609},29,[226,611,612],{"class":240},"            \"https://example.com/first.jpg\"",[226,614,398],{"class":366},[226,616,618],{"class":228,"line":617},30,[226,619,620],{"class":240},"            \"https://example.com/last.jpg\"\n",[226,622,624],{"class":228,"line":623},31,[226,625,626],{"class":366},"        ],\n",[226,628,630,632,634],{"class":228,"line":629},32,[226,631,489],{"class":240},[226,633,417],{"class":366},[226,635,636],{"class":236},"6\n",[226,638,640],{"class":228,"line":639},33,[226,641,331],{"class":366},[226,643,645],{"class":228,"line":644},34,[226,646,505],{"class":366},[36,648,650],{"id":649},"示例fast-参考生视频","示例：Fast 参考生视频",[113,652,654],{"className":220,"code":653,"language":222,"meta":121,"style":121},"curl -X POST https://api.evolink.ai/v1/videos/generations \\\n  -H \"Authorization: Bearer YOUR_API_KEY\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\n    \"model\": \"seedance-2.0-fast-reference-to-video\",\n    \"prompt\": \"参考视频 1 的第一人称视角，以音频 1 作为全程背景音乐。宣传短片片头。\",\n    \"image_urls\": [\"https://example.com/ref1.jpg\"],\n    \"video_urls\": [\"https://example.com/reference.mp4\"],\n    \"audio_urls\": [\"https://example.com/bgm.mp3\"],\n    \"duration\": 10,\n    \"quality\": \"720p\",\n    \"aspect_ratio\": \"16:9\"\n  }'\n",[68,655,656,668,676,684,690,695,700,705,710,715,720,724,729],{"__ignoreMap":121},[226,657,658,660,662,664,666],{"class":228,"line":229},[226,659,233],{"class":232},[226,661,237],{"class":236},[226,663,241],{"class":240},[226,665,244],{"class":240},[226,667,247],{"class":236},[226,669,670,672,674],{"class":228,"line":250},[226,671,253],{"class":236},[226,673,256],{"class":240},[226,675,247],{"class":236},[226,677,678,680,682],{"class":228,"line":261},[226,679,253],{"class":236},[226,681,266],{"class":240},[226,683,247],{"class":236},[226,685,686,688],{"class":228,"line":271},[226,687,274],{"class":236},[226,689,277],{"class":240},[226,691,692],{"class":228,"line":280},[226,693,694],{"class":240},"    \"model\": \"seedance-2.0-fast-reference-to-video\",\n",[226,696,697],{"class":228,"line":286},[226,698,699],{"class":240},"    \"prompt\": \"参考视频 1 的第一人称视角，以音频 1 作为全程背景音乐。宣传短片片头。\",\n",[226,701,702],{"class":228,"line":292},[226,703,704],{"class":240},"    \"image_urls\": [\"https://example.com/ref1.jpg\"],\n",[226,706,707],{"class":228,"line":298},[226,708,709],{"class":240},"    \"video_urls\": [\"https://example.com/reference.mp4\"],\n",[226,711,712],{"class":228,"line":304},[226,713,714],{"class":240},"    \"audio_urls\": [\"https://example.com/bgm.mp3\"],\n",[226,716,717],{"class":228,"line":310},[226,718,719],{"class":240},"    \"duration\": 10,\n",[226,721,722],{"class":228,"line":316},[226,723,301],{"class":240},[226,725,726],{"class":228,"line":322},[226,727,728],{"class":240},"    \"aspect_ratio\": \"16:9\"\n",[226,730,731],{"class":228,"line":328},[226,732,337],{"class":240},[36,734,736],{"id":735},"什么时候不建议用-fast","什么时候不建议用 Fast",[133,738,739,745,751],{},[136,740,741,744],{},[19,742,743],{},"最终交付物 / 广告成片"," — 选择 Standard，画质细节更稳",[136,746,747,750],{},[19,748,749],{},"近距离面部或微表情镜头"," — Standard 更精细",[136,752,753,756],{},[19,754,755],{},"复杂 reference-to-video 合成","（同时用 9 图 + 3 视频 + 3 音频） — Standard 综合理解能力更强",[36,758,759],{"id":759},"相关文档",[133,761,762,769,775,781],{},[136,763,764],{},[765,766,768],"a",{"href":767},"/docs/models-overview","模型总览",[136,770,771],{},[765,772,774],{"href":773},"/docs/text-to-video","文生视频 API",[136,776,777],{},[765,778,780],{"href":779},"/docs/image-to-video","图生视频 API",[136,782,783],{},[765,784,786],{"href":785},"/docs/reference-to-video","参考生视频 API",[788,789,790],"style",{},"html pre.shiki code .svObZ, html code.shiki .svObZ{--shiki-default:#B392F0}html pre.shiki code .sDLfK, html code.shiki .sDLfK{--shiki-default:#79B8FF}html pre.shiki code .sU2Wk, html code.shiki .sU2Wk{--shiki-default:#9ECBFF}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html pre.shiki code .snl16, html code.shiki .snl16{--shiki-default:#F97583}html pre.shiki code .s95oV, html code.shiki .s95oV{--shiki-default:#E1E4E8}html pre.shiki code .sAwPA, html code.shiki .sAwPA{--shiki-default:#6A737D}html pre.shiki code .s9osk, html code.shiki .s9osk{--shiki-default:#FFAB70}",{"title":121,"searchDepth":250,"depth":250,"links":792},[793,794,795,796,797,798,799,800],{"id":38,"depth":250,"text":39},{"id":124,"depth":250,"text":125},{"id":197,"depth":250,"text":197},{"id":216,"depth":250,"text":217},{"id":349,"depth":250,"text":350},{"id":649,"depth":250,"text":650},{"id":735,"depth":250,"text":736},{"id":759,"depth":250,"text":759},"Seedance 2.0 Fast 系列（fast-text-to-video / fast-image-to-video / fast-reference-to-video）说明：更快的生成速度与更低的成本，参数与 Standard 完全一致。","md",{},"/zh/docs/fast-models",{"title":5,"description":801},"zh/docs/fast-models","AUl7mv9CpEiSYz5txuQKS5isj14DAKq9rA-_pHltiVk",1776086324181]