Guides
Sume guides: the API, Formats, agents, models, media tools and pricing, each answer dated and sourced.
3:2 photo ratio image API: which Sume models list it and which do not
13 of 16 Sume image models list 3:2 natively; GPT Image 2.5 and Imagen 4 do not. Names, per-image prices, and how GPT reaches 3:2 with custom pixels.
curl --json: submit a Wan 3.0 video to Sume in one flag
curl 7.82 and later has --json, which sets the body and the JSON headers for you. A Wan 3.0 submit with an Idempotency-Key, then a status poll with jq.
Bun and Deno load .env for a Sume script: Deno needs --allow-env
One submit script, three runtimes. Bun reads .env on its own; Deno needs --env-file plus --allow-env for each variable. Tested on Bun 1.4.0 and Deno 2.9.7.
One 30-second AI ad every day for 30 days: what the month costs
A 30-second ad daily for 30 days is 900 seconds. At Sume's catalog rates that is $56.25 on Wan 480p, $112.50 on Wan 720p, or $189 on Kling 3 with audio.
2:1 and 1:2 ratio images: which Sume models list them and the cost
8 Sume image models list 2:1 (wide) and 1:2 (tall); Nano Banana, Seedream, GPT and Imagen do not. Prices from $0.025 and the 4:1 workaround.
A 60-second AI video: five stitching routes priced on Sume
Sixty seconds is two Wan 3.0 jobs ($7.50 at 720p), four Kling 3 jobs ($8.40 silent), or six Omni jobs ($7.50). Costs include a $0.10 Timeline render.
MiniMax H3 text-to-video rejects adaptive: send an explicit ratio
On Sume the H3 text-to-video builder accepts 21:9, 16:9, 4:3, 1:1, 3:4 or 9:16 and rejects adaptive. Only reference-to-video allows it. Preflight in Python.
Kling 3 start-and-end-frame transitions: 6 clips for a slideshow
Seven photos need six morphs. Kling 3 Pro takes a first and a last frame: $0.70 per 5 s clip silent, $1.05 with sound, so $4.20 or $6.30. Request shape inside.
Repost or regenerate a 15-second Wan clip for Reels and Shorts?
Repurpose.io can repost TikTok or Reels to Shorts. A 15-second Wan 720p clip costs $1.88 to generate; regenerating per platform triples it.
Cut a 10-minute recording into 3-minute Reels with video trim
A 600 s recording becomes four trims: 180, 180, 180 and 60 s, $0.08 in total. Python loop with a safe Idempotency-Key per segment; run it with an imported file.
Micro-drama season of 40 one-minute episodes: cost by Sume model
Micro-dramas are rising on TikTok, Reels and Shorts. Forty 60-second episodes in 9:16 priced on Omni, Wan, Kling, MiniMax H3 and Seedance, with the catches.
H3 at 480p is only 17% cheaper than 768p, so draft on Wan instead
MiniMax H3 bills $0.0625 a second at 480p and $0.075 at 768p on Sume. Drafting there saves 17 percent; a Wan 480p draft costs the same rate.
Date.now() is milliseconds: the Sume webhook timestamp is seconds
A Node webhook verifier that compares Date.now() to x-sume-webhook-timestamp rejects every delivery. The one-line fix and a four-case test around 300 s.
bash wait -n fails on macOS bash 3.2: cap curl jobs at four
On macOS /bin/bash 3.2 'wait -n' is an invalid option, so a throttled curl loop spins. A portable version that caps Sume video submits at four in flight.
A 10-second 9:16 ad: what each Sume video model costs
Ten seconds of 9:16 video on Sume: H3 768p $0.75, H3 Max 768p $1.00, Wan 720p $1.25, Omni 720p $1.25. All except Wan carry always-on audio.
Five hooks a week at 10 seconds: a month of ad testing on three models
Five 10-second hooks a week for four weeks is 20 clips. On Sume that is $25 on Wan 3.0 720p, $25 on Omni 720p, or $20 on H3 Max 768p.
make -j4 as a resumable Wan 3.0 batch runner with an Idempotency-Key
Twelve Wan 3.0 shots as twelve make targets. Re-run after a crash and only missing outputs submit, with an Idempotency-Key per shot. Tested on a stub server.
Seedance 2.5 vs Omni Flash at 5 and 10 s, 720p 9:16: a 4.6x gap
Seedance 2.5 bills by token at 720p 9:16: $2.89 for 5 s and $5.78 for 10 s. Omni Flash 720p is $0.63 and $1.25. What the gap buys, from the Sume docs.
Seedance 2.5 estimate vs usage.cost: reconcile a job in Node
Compute the Seedance 2.5 price from width, height and seconds, submit one job to Sume, and compare it with usage.cost on the poll. A runnable Node 18 script.
Which Sume video clips carry audio for the Shorts editor split
YouTube Shorts now separates audio and video tracks. Which Sume video models return sound, which can mute, and what a $0.01 detach adds.
Node --env-file for SUME_API_KEY: fail fast, not the string undefined
Node 22 loads .env with --env-file. A missing SUME_API_KEY then becomes the string 'undefined' in a header. Guard it in two lines and keep .env out of git.
Higgsfield Soul price per image: an account estimate, what Sume bills
Higgsfield publishes no public USD tariff for Soul 2. Sume prices it from an account estimate: $0.004 list at 720p, $0.006 at 1080p, billed $0.005 and $0.0075.
One Sume webhook signature, three languages: a shared test vector
A fixed secret, timestamp and body that must sign to the same sume-v1 value in Python, Node and Go. Use it to test a verifier in any language you add.
Repost a Reel or TikTok to YouTube Shorts: import, trim, caption
Orca reports a Repurpose.io tie-up for reposting TikTok and Reels to Shorts. The Sume route is import, trim ($0.02), caption ($0.20), plus a note on reach.
B-roll from a transcript: one 4-second clip per sentence
Turn a 2-minute talk into B-roll: STT for $0.02, 12 sentence clips at Wan 3.0 480p and a 2-minute Timeline render come to $3.22.
Go: cancel the rest of a batch after the first 402 on Sume
A Go fan-out that stops launching Wan 3.0 submits the moment one returns 402 insufficient_credits, using context.WithCancel and a 2-slot semaphore.
Sora to Sume in Python: a 10% rollout flag with a spend guard
Move video traffic off a dead Sora call one slice at a time. A stable per-user percentage flag, one Sume call, and a cost guard that stops at your daily cap.
Muting a Wan 3.0 clip saves nothing; Kling 3 audio off does
Wan 3.0 has no audio price line on Sume, so generate_audio false changes no cost. Kling 3 charges $0.14 off, $0.21 on a second.
Shortest billable clip: Wan 3.0 at 2 seconds versus H3 at 5 seconds
Wan 3.0 starts at 2 seconds and MiniMax H3 at 5 on Sume. Shortest job: Wan 480p $0.13, H3 480p $0.38. Table of minimums for all models.
jq -n --arg: build a Sume video body when the prompt has quotes
Hand-quoted curl -d bodies break on a quote or backslash in the prompt. jq -n --arg escapes it right. Tested with a Wan 3.0 submit on curl 8.7.1 and jq.
Plant shop care-tip loop: Seedance 2.5 with one image as both frames
Send one photo as first_frame and last_frame to Seedance 2.5 on Sume for an 8-second 1:1 loop-style clip: the request body, $4.63 at 720p, and the limits.
curl -K config file: keep your Sume API key out of ps output
A key passed with -H shows in ps args and shell history. curl -K reads headers from a chmod 600 file instead. Tested on curl 8.7.1 against a stub.
Shorts split audio from video: which Sume models let you drop AI sound
The Shorts editor now separates audio and video tracks. Which Sume video models can generate silent footage, which always embed audio, and the price gap.
Grok Imagine Video on Sume: the cents-per-job ladder, 4 to 15 seconds
Grok Imagine Video 1.5 bills $0.0125 per second, rounded up to the cent per job. Every length from 4 to 15 seconds, and why a 5-second clip costs 7 cents.
MiniMax H3 clip audio: keep it or detach it for a Short
MiniMax H3 is reported to make native stereo audio. Detach it for $0.01 to mix it separately. Prices for H3 768p and H3 Max.
Shorts editor splits audio from video: make voice and music files
YouTube's Shorts editor now keeps audio apart from video. Make a clean voice file and a music bed on Sume for $0.163 and drop each on its own track.
Seedance 2.5 30-second clip as a whole Short: what it costs
One 30-second Seedance 2.5 clip at 720p is $17.334 on Sume. Compare with 8 and 15 seconds and with cheaper ways to fill 30 seconds.
Repost TikTok to Shorts: what a Sume rebuild chain costs
A TikTok or Reel you own, rebuilt as a Short with new voice, music bed and captions: six Sume calls priced at about $0.61 in total.
Cut a YouTube Short on the beat: BPM to cut times in Python
Turn a music bed's BPM into cut start times for a 30-second Short. Runnable Python, plus the $0.10 Timeline render and $0.125 bed.
YouTube Shorts music not working: bake in your own bed
When library music fails on a Short, a bed you generated is part of your file. How to make one for $0.125 and duck it under speech.
Product cutout pop-in for Shorts: RMBG plus compose cost
Cut a product photo out for $0.0225 and overlay it on a clip for $0.02. The per-product price of a pop-in, with the limits.
Batch of 10 product Shorts: cost table on Sume
Ten five-still product Shorts cost $4.675 on Sume, or $6.675 with captions. What scales and what a preflight saves.
Amazon affiliate Short: sales needed to pay back the video
How many sales cover a $0.4675 product Short? A table with assumed commission rates, since Amazon's real rate depends on category.
YouTube Shorts hook generator: what Sume does and does not do
Sume has no hook-generator button. It can test a 3-second opener for $0.1125 on Gemini Omni Flash. Five variants cost $0.5625.
MiniMax H3 native audio vs TTS plus lip sync for a 10-second line
MiniMax H3 makes stereo audio with the clip. For an exact spoken line, Sume prices TTS plus Fabric or H3 Max lip sync: $0.75 to $2.01 for 10 seconds.
AI video with sound: what audio adds per second on Sume
Native audio is a switch on some video models and always on in others. See the per-second price with and without it for Kling 3 Pro, Omni Flash and H3 Max.
Which Sume video models accept an audio reference (audio_url)?
Seedance 2.x, Wan 3.0, MiniMax H3 and H3 Max take audio and video references on Sume. Gemini Omni Flash 1.1 and Recast do not. Rates and limits.
Check your predicted cost against usage.cost when a Sume video ends
Compare your own price prediction with the usage.cost on a completed Sume job and flag drift. A 20-line Python check, tested on three sample polls.