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
Nano Banana Pro vs Nano Banana 2: which id to send on Sume
Nano Banana Pro and Nano Banana 2 share tiers and 10 references on Sume; they differ in extra aspect ratios and in which tiers change the price.
Nano Banana quality parameter: why quality returns 400
Sending quality to Nano Banana 2 or Pro on Sume returns 400 unsupported_parameter. What quality does elsewhere, and what to change instead.
Open source AI video generator with audio: LTX-2 and MiniMax H3
Two open-weights video models make sound with the picture: LTX-2 and MiniMax H3. What each page says, and how a hosted API reports audio.
Open-source video model vs API: which to use for Wan-class video
Weights you run yourself, or a hosted video API? What the choice changes for cost, setup and limits, with Wan 3.0's per-second API price as the worked example.
Qwen Image 2.1 API: open weights, and what Sume lists
Qwen-Image-2.1 is an open-source 7B image model on Hugging Face with no inference provider. Sume lists qwen-image and qwen-image-max instead.
Qwen Image 3.0: does Sume list it? A catalog check
Sume lists qwen/qwen-image and qwen/qwen-image-max, and nothing named 3.0. How to check the live catalog for a new Qwen id and what an unknown id returns.
Qwen Image license: is Qwen-Image open source under Apache 2.0?
The Qwen-Image model card says the weights are Apache 2.0 and were released on 2025-08-04. What that covers, and how the hosted qwen ids on Sume differ.
Qwen Image Max API on Sume: text-only, and how it differs
qwen/qwen-image-max on Sume is text-to-image only and rejects reference images with a 400. Price, ratios, a working call, and how it differs from qwen-image.
Recraft V4.1 API on Sume: check the catalog for the id
Sume lists recraft/recraft-v4, not a V4.1 id. How to check the live catalog for a newer Recraft, and what the listed model takes: text only, webp, $0.05.
Recraft V4 SVG: can you get vector output through Sume?
Recraft says V4 can make editable SVG. Sume's recraft/recraft-v4 advertises webp output only. What that means, plus a working call.
Runway Media Router and sume/auto: what Sume's router does
Looking for a Runway Media Router equivalent? Sume's video router is sume/auto: it picks the model, never says which ran, and clips run 3 to 10 seconds.
Does generate_audio change Seedance 2.0's price?
No. fal says Seedance 2.0 audio costs the same on or off, and Sume's Seedance price has no audio input: seedance-2 reserves about $0.38 per 720p 16:9 second.
Seedance 2.0 max length: 15 seconds, and how to go longer
Seedance 2.0 clips run 4 to 15 seconds on Sume and on fal. For 16 to 30 seconds use seedance-2.5 ($17.34 at 720p) or chain clips with first_frame.
What is Seedance 2.0 Mini, and where can you run it?
Seedance 2.0 Mini is a Seedance 2.0 model that CapCut and fal list. On Sume it is the id seedance-2-mini, 4–15 s clips, about $0.19 per 720p second.
Does a reference video change Seedance 2.0's price?
Yes. A reference video adds 15 assumed input seconds at 0.6× on Sume, so a 10 s 720p clip on seedance-2 reserves $5.67, not $3.78.
Seedance 2.0 resolution in pixels: 480p, 720p and 1080p by ratio
Seedance 2.0 720p at 16:9 is 1280×720 and 1080p is 1920×1080. The full pixel table for six aspect ratios, as fal lists it and Sume prices it, with no 4K.
Seedance 2.5 3D blockout camera control: clay renders as a reference
Seed describes clay-render referencing, a textureless 3D model that blocks camera and pose. Sume has no clay mode; you send the render as a video reference.
Seedance 2.5 aspect ratios: 9:16 vertical, 21:9 and the rest
Seedance 2.5 on Sume accepts 21:9, 16:9, 4:3, 1:1, 3:4 and 9:16. Set aspect_ratio explicitly; 3:2 is rejected. Ratios, errors and the price effect.
Seedance 2.5 audio reference: how to send an audio clip
Seedance 2.5 accepts an audio clip as a reference, even without an image or video. The audio_url request on Sume, the vendor's file limits and what to expect.
Seedance 2.5 image to video: first frame and last frame
Send a first_frame, or a first_frame and last_frame, with seedance-2.5 on Sume. Rules for frame_images, how it differs from input_references and what to set.
Seedance 2.5 omni reference: how @image, @video and @audio tags work
Seedance 2.5 prompts point at references with tags such as @Image 1. Sume rewrites lowercase tags like @image1 to the casing the model expects. Examples.
Seedance 2.5 50 references: how many can you use on Sume?
BytePlus lists 50 Seedance 2.5 references (30 images, 10 videos, 10 audio clips). Sume's API accepts 12 input_references per request for seedance-2.5. Compared.
When was Seedance 2.5 released, and where can you use it?
ByteDance Seed launched Seedance 2.5 on 2026-07-31 in its own apps. The model id seedance-2.5 is in Sume's video catalog. Dates and access, read 2026-09-29.
Seedance 2.5 video editing: green screen, camera angle, timestamps
ByteDance says Seedance 2.5 edits video by timestamp, incl. green screen and camera angle. What BytePlus documents for edits and what Sume's API lists today.
Seedance 2.5 vs 2.0: what changed in duration and references
Seedance 2.5 raises the clip to 30 seconds and references to 50 in BytePlus's docs. The 2.0 vs 2.5 table and how Sume's own limits differ, read 2026-09-29.
Seedance 2.5 vs Gemini Omni: length, references and editing
Seedance 2.5 and Gemini Omni Flash compared on published specs: 30 vs 10 seconds, reference rules, extension and edit mode. Ids on Sume and on Google's page.
Seedance 2.5 vs Kling 3.0: durations, references and audio
Seedance 2.5 and Kling 3.0 compared on the specs their own pages and Sume's catalog publish: length, resolution, references, audio. No winner, just the table.
Seedream 5.0 Pro API: Sume lists 5.0 Lite, not Pro
Sume's catalog has bytedance-seed/seedream-5-lite, 4.5 and 4.0, and no Seedream 5.0 Pro id. What a Pro id returns and which listed model to call instead.
Cartesia Sonic 3 languages: 44 in Sonic 3.6, how to set one
Cartesia says Sonic 3.6 speaks 44 languages, including new Odia and Urdu. How its language and locale fields work, and Sume's language field.
Stable Audio 3 open weights: run them yourself or call a hosted API
Stable Audio 3 Small SFX, Small and Medium are open-weight; Large is on Stability's API. Sume's music route lists Lyria ids only, so weights mean self-hosting.
Stable Audio 3 max length: six minutes, and how to reach it on Sume
Stability says Stable Audio 3 Medium and Large pass six minutes. Sume's Lyria music runs up to a few minutes; join separate takes for more with Timeline audio.
Text to speech API with emotion, speed and volume controls
Sume's text to speech API takes generation_config: speed 0.6 to 1.5, volume 0.5 to 2.0 and an optional emotion guide of up to 64 characters.
Text to speech sample rate: which output_format to pick
Sume's TTS output_format takes mp3, wav or raw, six sample rates from 8000 to 48000 Hz and four PCM encodings. The default, and when to send wav.
Veo 3 shutdown: which Gemini API models retired and what replaces them
Google retired veo-3.0-generate-001, veo-3.0-fast-generate-001 and veo-2.0-generate-001 on 2026-06-30. Its listed replacements are the Veo 3.1 preview models.
Veo 3.1 4K API: 8 seconds only, and 4K options on Sume
Veo 3.1 makes 4K video only at 8 seconds, and not on the Lite model. On Sume, gemini-omni-flash-1.1 lists 4K for 3 to 10 seconds.
Veo 3.1 API: how to call it, and what Sume lists instead
The Veo 3.1 API is Google's, called through the Gemini API with preview model codes. Sume does not list Veo; here are the catalog models with the same inputs.
Veo 3.1 extend video, and how to chain clips on Sume
Veo 3.1 extends only videos Veo made, 7 seconds at a time. Sume has no extend call, so you chain clips from a last frame or pick a model with a longer limit.
Veo 3.1 first and last frame: how the API works
Veo 3.1 takes a first image and a last image and generates the motion between them. Here is Google's request shape and where the same input works on Sume.
Veo 3.1 Lite, Fast or standard: how to choose
Veo 3.1 has three preview models: standard, Fast and Lite. Lite drops 4K and extension; Fast targets speed. What each does, plus Sume's tiered Seedance.
Veo 3.1 reference images: three max, and the 8-second rule
Veo 3.1 takes up to three reference images, and a request with them must run 8 seconds. Sume does not list Veo; its reference-capable models take more.
Veo 3.1 vs Kling 3.0: how to choose by inputs and limits
Google's Veo 3.1 limits next to the kling-3 entry in Sume's catalog: clip length, resolution, references and audio. Sume lists kling-3 and does not list Veo.
Veo 4 release date: what Google's Veo pages list today
Google's Gemini API pages list Veo 3.1 and its Lite preview and name Gemini Omni Flash the default video model. No Veo 4 date appears; here is what does.
Choosing an AI video API as a developer: a technical checklist
Choose an AI video API on job model, not demos: async submit and poll, idempotent retries, webhooks, live capability discovery, a billing model you can read
AI video with audio: which models always add sound, which are optional
On Sume, minimax-h3, minimax-h3-max and gemini-omni-flash-1.1 always add native audio; kling-3, Seedance and Wan make it optional; grok-imagine-video-1.5 none.
sume/auto or a pinned video model: how to decide
Use sume/auto when you accept 3 to 10 second clips at 16:9 or 9:16 and do not care which family runs. Pin a model id for a specific input, length or audio.
Which AI video model should I use? A checklist by input and output
Pick an AI video model by what you must send and get back: frames, references, audio, length, resolution. This checklist maps each need to Sume catalog ids.
Wan 3.0 open source: weights on Hugging Face or API only?
fal says Alibaba's published Wan weights stop at Wan 2.2, and Wan 3 is an API model. What that means for Hugging Face searches, and the wan-3.0 id Sume hosts.
Wan 3.0 1080p: how to request full HD from the API
Wan 3.0 outputs 480p, 720p or 1080p. Send resolution 1080p to wan-3.0 on POST /v1/videos, up to 30 seconds, with audio. See the request and the price.