Models
The models behind Sume's video, image, speech, and music endpoints: ids, clip lengths, resolutions, aspect ratios, audio, references, and migration.
Start with What AI models does Sume support? Every model id, by API surface
Higgsfield alternatives: studio, API and MCP compared
Higgsfield alternatives by the part you use: its studio apps, its API or its MCP link. fal, Kling, Replicate, Runway, Seedance and Sume, dated.
Runway Act-Two: what it does, API inputs and cost
Runway Act-Two applies an acted performance from a 3–30 second video to a character image or video. API fields, credit cost, and a Sume option.
Kling vs Runway: models, clip limits and API prices
Kling's API sells only Kling models; Runway's sells Gen-4.5 and Aleph 2.0 plus other labs' models. Clip limits, audio and per-second prices compared.
Runway Aleph 2.0 API: aleph2 inputs, limits and price
Yes: Aleph 2.0 is aleph2 on Runway's POST /v1/video_to_video. It edits a 2–30 s video from a prompt and keyframes at 28 credits a second.
Kling 3.0 vs Kling 3.0 Omni: inputs, limits and price
Kling 3.0 and 3.0 Omni share 3–15 s clips up to 4K with native audio. Omni adds reference and edit videos; 3.0 adds Motion Control. Prices compared.
Kling 3.0 prompt guide: length, shots, dialogue, negatives
A Kling 3.0 prompt can run to 3,072 characters and include negative wording. Kling's rules for shot lists, dialogue, languages and Elements.
Runway Gen-4.5 vs Seedance 2.0: inputs, length and price
On Runway's API, Gen-4.5 makes 2–10 s clips for 12 credits a second; Seedance 2.0 makes 4–15 s clips with audio for 36–150 credits a second.
Text to speech in Japanese: set the language to ja
For Japanese text to speech, send the script in kana and kanji and set the language to ja. Left out, Sume can read a kanji-only line as English.
Text to speech pronunciation: how to fix wrong words
Fix text to speech pronunciation: set the text's language, use a voice recorded in it, and respell tricky words. What Sume's TTS API checks for you.
How to change the color of an object in an image with AI
Send the photo to an AI image model, name the object and its new color, and list what must stay. One request per color, checked against the original.
AI image prompt examples: a template and 8 prompts to copy
A good AI image prompt names the subject, setting, style, light, and framing in a sentence or two. A template, 8 examples, and what goes in settings.
AI photo editing prompts: change one thing, keep the rest
An AI photo editing prompt says what to change and lists what to keep. The pattern, plus examples for background, light, color, style, and cleanup.
Image to image AI: turn your photo into a new picture
Image-to-image AI redraws your photo from a text instruction: a new style, background or color. What it changes, what it keeps, and how to run it.
How to change the background of a video with AI
Give a video-to-video AI model your clip and a prompt that names the new background and what must stay. How to do it on Sume and what to check.
How to remove an object from a video with AI
Name the object in a video-to-video AI edit prompt and say what stays. How to do it on Sume, how to swap or add objects, or blur them instead.
Video to anime AI: how to turn a clip into anime
To turn a video into anime with AI, use a video-to-video edit that names the style and what to keep, or restyle one frame and animate it.
Day to night video with AI: edit, generate, or grade
Turn a day video into night with a video-to-video AI edit, generate a day-to-night clip from two stills, or darken it with a color grade.
How to make AI videos from text or a photo
To make an AI video, pick what it starts from, describe the shot, set its length and shape, then generate and review. How to do each step on Sume.
How to write a prompt for an AI video generator
Write an AI video prompt as one shot: subject and action, camera, light, and framing. A template, worked examples, and what goes in settings instead.
Image to video prompt examples: what to write
An image-to-video prompt needn't describe the photo again. It says what moves, what the camera does, and what stays still. Examples by photo type.
Camera movement prompts for AI video: pan, dolly, orbit
Name the camera move in the prompt, one per shot, with its direction and speed; Sume's video API has no camera setting. Terms, examples, and limits.
AI cartoon video generator from text: how to set the style
Name the cartoon or anime look in your prompt, or draw a styled still first and animate it as the first frame. Sume's video API has no style field.
AI video transition generator: bridge one shot to the next
An AI transition is a generated clip that starts on the last frame of one shot and ends on the first frame of the next. How to make one with Sume.
AI video with multiple characters: get everyone in one shot
Give the model every character: one still with the whole cast as the first frame, or one reference image per character on a model that takes several.
Text to speech in Korean: send Hangul text with language ko
For Korean text to speech, send the script in Hangul with the language set to ko. How Sume's TTS API reads Korean, checks the voice, and bills it.
Multilingual text to speech API: one request per language
Make speech in several languages by sending one TTS request per language, each with the translated script and its language code. How Sume handles it.
AI voiceover with my own voice: clone once, reuse in TTS
Make an AI voiceover in your own voice: clone it once from a short clip in Sume's Voices library, then use its id as the voice for text to speech.
AI voice generator with a prompt: describe the speaker
An AI voice generator with a prompt designs a new voice from a written description. In Sume, describe a person in Assets → Voices, then use it in TTS.
AI music prompt examples: a template plus 6 briefs
A good AI music prompt reads like a brief: mood, genre, BPM, key, instruments, one moment, and era. Here is a template and six examples to adapt.
Image to music AI: generate a track from a photo
Image to music AI uses a picture as an input for a track. On Sume, send image_url with the text prompt to the Music Router; the price stays the same.
How to combine two photos into one with AI
Yes, AI can combine two photos into one: send both as references to an image model and describe the single scene you want. How to do it with Sume.
How to generate variations of an image with AI
Send the image as a reference, say what may change and what must stay, and set n for several results per call. How to do it on Sume's Image API.
Photo to painting AI: turn a photo into a painting
Turn a photo into a painting with AI: send it as a reference image, name the style in the prompt, and keep its shape with aspect_ratio auto.
Sketch to image AI: turn a drawing into a finished picture
Turn a sketch into an image with AI: send the drawing as a reference, describe the finished result, and ask for up to four versions per call.
Consistent character AI image generator: reuse one reference
Keep one character consistent across AI images: send the same reference image with every request, repeat its description, and change only the scene.
AI image seed: what it is and how to repeat an image
An AI image seed fixes a generation's random start so a result can repeat. Sume's image API does not serve seed yet; reuse a reference image instead.
AI image with text generator: get the words right
Make an AI image with text: quote the exact words in the prompt, raise the quality setting, proofread every letter, and set exact copy yourself.
Image to video vs reference to video: what's the difference?
Image-to-video makes your picture the first frame; reference-to-video uses pictures, clips, or audio as guidance. Which to use, and which one wins.
How to make a picture move with AI: pick the motion
Give the picture to an image-to-video model as its first frame and describe the motion. Motion control copies a dance; lip sync makes a face talk.
Seamless loop AI video: make a clip end where it starts
To loop an AI video, send one image as both its first and last frame, then compare the two ends before you loop it. Which models take an end frame.
What is an AI video seed? How to repeat a result without one
A seed fixes a generator's random starting point. Sume's video models take none and refuse the field. How to keep a clip or a look without one.
AI video negative prompt: how to keep things out of a clip
Sume's video API has no negative prompt field, and today sending one returns a 400. Describe the shot you want, then pin its frames, look, and sound.
AI video from multiple images: frames, references, stills
On Sume, one AI clip takes two images, as its first and last frames. For more, chain clips pair by pair, use references, or hold them as stills.
AI video 4K quality prompt: what actually sets resolution
Writing 4K in a prompt is not how Sume sets resolution. Request 4K in the resolution field of a model that lists it, or upscale a finished clip.
Seedance 2.5 API: 30-second clips, resolutions, references
Seedance 2.5 on Sume is seedance-2.5: 4–30 second clips at 480p, 720p, or 1080p. The documented limits, inputs, and billing for each Seedance id.
Sora API alternatives for video generation after the shutdown
The Sora API shut down on September 24, 2026. Compare Runway, Kling, fal, Replicate and Sume by models, audio, price unit, API shape and limits.
Image-to-video API: set the first and last frame with frame_images
Send frame_images to POST /v1/videos with a first_frame and an optional last_frame. Which Sume models take each frame, what wins, and what gets refused.
Reference-to-video API: guide a clip with images, video, and audio
Send input_references to POST /v1/videos to guide a clip with reference images, videos, or audio. Which Sume video models take each type, and how many.