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
Dictation API: AssemblyAI cleaned text vs Sume STT word timings
AssemblyAI's Dictation API returns send-ready text. Sume STT returns a transcript with words[] timings and no cleanup flag, so you do the filler removal.
AssemblyAI text to speech: coming soon, and what Sume has today
AssemblyAI's product menu lists a Text-to-Speech API as coming soon. Sume TTS is available now: what a call takes, the 20000-character cap, and word timings.
Creatify Boreal talking clips vs Sume's still-plus-audio route
Creatify says Boreal's gains are smallest on single-person talking clips. Sume makes every speaking shot from an accepted still plus TTS audio via Fabric.
Deepgram nova-3-pharma vs Sume STT: drug-name transcripts
Deepgram added nova-3-pharma for English drug names. Sume STT has one public model, sume/stt-1.0, so check each drug name against word timings.
ElevenLabs character limits by model vs Sume TTS 20,000
ElevenLabs lists 5,000 characters for v3, 10,000 for v4 and 40,000 for Flash v2.5. Sume TTS 1.0 takes up to 20,000 characters in one request.
ElevenLabs speech to speech API: what Sume offers instead
ElevenLabs lists speech-to-speech voice changer models. Sume has no voice-to-voice endpoint: transcribe with STT, edit the text, then run TTS.
FLUX.2 flex steps and guidance: BFL has them, Sume does not
BFL lists adjustable steps and guidance only for FLUX.2 flex ($0.06/MP). Sume lists flux.2-flex but rejects unlisted parameters with 400.
FLUX.2 max grounding search: what it is, what Sume lists
Only FLUX.2 [max] does web-grounded generation at BFL. Sume lists flux.2-pro and flux.2-flex, so grounding is not available there.
GPT Image aspect ratios for a Pinterest pin (2:3) and Instagram (4:5)
Sume lists 17 aspect ratios, including 2:3 for a Pinterest pin and 4:5 for an Instagram portrait. A model only accepts the ratios its catalog row lists.
HappyHorse 1.0 API: what Runway lists and how to check Sume's models
Runway lists HappyHorse 1.0 at 3-15 seconds, 720p and 1080p. Sume's video docs name no such id, so read /v1/videos/models before you plan around it.
HeyGen cinematic avatar API: 3 looks per shot vs Sume's one
HeyGen cinematic_avatar takes a prompt and 1-3 avatar looks with no script. Sume Avatar Video resolves one avatar per final video from a script.
Kling 4.0 21:9 ultrawide: check Sume's aspect ratios
Kling 4.0 supports 21:9 output. Sume documents 21:9 as a ratio, but each model lists its own supported_aspect_ratios, so read them before sending.
Kling 4.0 Flash early access: how to tell what Sume lists
Kling 4.0 Flash opened to a limited group on Sept 28 with full launch in October. On Sume, a model is callable when the live catalog lists it.
Kling 4.0 stereo audio vs Sume's generate_audio flag
Kling 4.0 moves to two-channel stereo audio. Sume exposes generate_audio and per-model audio capability; check the catalog for what each model reports.
Ray 3.2 API aspect ratios and resolutions, and Sume's lists
Luma lists six Ray 3.2 aspect ratios (9:16 to 21:9) at 540p, 720p and 1080p. Sume reports ratios per model in supported_aspect_ratios and rejects size.
Seedance 2.0 4K price: Luma 261 credits/sec, Runway 150, Sume 1080p
Luma lists Seedance 2.0 at 4K for 261 credits per second; Runway's docs list 150. Sume's docs list seedance-2 at 480p, 720p and 1080p, with no 4K entry.
Nano Banana multiple images at once: n range vs Gemini's count
Google says Gemini won't always return the exact image count you ask for in a prompt. On Sume, set n, and read each model's n range from the catalog.
Nano Banana video to image: poster from a video via Sume stills
Google's Gemini API takes a video as context for a thumbnail or poster. Sume's images API takes image references only, so grab a still frame first.
Runway video_to_hdr alpha and ProRes 4444: what Sume returns
Runway's /v1/video_to_hdr now keeps source alpha and delivers ProRes 4444. Sume docs describe no alpha or ProRes output; a completed video job is a download.
Speechmatics Linden for voice agents vs Sume batch STT jobs
Speechmatics announced Linden for voice agents. Sume STT is a bounded batch job with a webhook, not a live stream, so live agents need streaming.
Synthesia Interactive Avatar API vs Sume rendered avatar clips
Synthesia headlines a live Interactive Avatar API. Sume avatar video is script-driven and rendered as a job: submit, poll, then fetch the clip.
Adobe Firefly Image 5 API: native 4 MP vs Sume resolution tiers
Firefly's Image5 model is described as native 4 MP with Instruct Edit. Sume does not list a Firefly model; it uses 512, 1K, 2K and 4K tiers.
Fish Audio Drama 3 single-word fix vs Sume sentence segments
Fish Audio says Drama 3 preview can fix a single word. Sume has no word-level repair: regenerate a sentence and join takes with Timeline audio concat.
Flux TTS expressivity -2 to 2 vs Sume's emotion guide
Deepgram's Flux TTS expressivity runs -2 to 2 (0 nominal). Sume TTS has no such dial: generation_config takes volume, speed and a free-text emotion guide.
Gemini 3.1 flash image preview shutdown: Sume model ids
Google lists gemini-3.1-flash-image-preview and gemini-3-pro-image-preview for June 25, 2026 shutdown. Sume callers use catalog ids like google/nano-banana-2.
Hedra Character 3 aspect ratios vs Sume Avatar Video ratios
Hedra Character 3 lists seven aspect ratios including 9:21 and 21:9. Sume Avatar Video supports five: 1:1, 3:4, 9:16, 4:3 and 16:9, default 9:16.
Ideogram 8K output resolution API vs Sume 512 to 4K tiers
Ideogram 4.0 takes output_resolution 1k, 2k, 4k or 8k as a pixel budget. Sume's image route takes a normalized 512, 1K, 2K or 4K tier.
Ideogram Z-Image resolution rules vs Sume image_size
Ideogram Z-Image takes WIDTHxHEIGHT, sides in multiples of 16, area up to 1,048,576 px. Sume uses 512/1K/2K/4K tiers and GPT Image 2.5 custom pixels.
Edits Restyle with a prompt vs Sume video router edit mode
Edits Restyle changes a clip's look from a text prompt. In Sume, send video_url to the video router with a prompt to use gemini-omni-flash-1.1 edit mode.
Edits audio vibe filter vs a Sume music prompt (no duration field)
Edits lets you filter audio by vibe like chill or bossy. Sume music takes a text prompt instead, with no duration, seed or temperature parameter to pin.
Kling 4.0 10-bit HDR at 1080p and 4K: what later edits keep
Kling says 4.0 outputs 10-bit HDR at 1080p and 4K. Sume's exact video_trim re-encodes to yuv420p; keyframe trims stream-copy. Verify before you grade.
Kling 4.0 five reference videos vs Sume's 1 to 3 video URLs
Kling 4.0 takes up to 5 reference videos, 30 seconds combined. Sume lists 1-3 reference_video_urls on the legacy shape and varies per model.
Midjourney edit model image references: 4 vs Sume's ranges
Midjourney's V8.2 edit model takes up to 4 image references. On Sume the ceiling is per model: GPT Image 2.5 takes up to 16. Read the descriptor first.
minimax/hailuo-3 on OpenRouter vs Sume minimax-h3 id
OpenRouter names the model minimax/hailuo-3. Sume uses bare catalog ids, so the matching id is minimax-h3, native 480p/768p, with 2K and 4K as priced upscales.
Qwen-Audio-3.0-TTS languages: 16, and Sume's language field
Qwen-Audio-3.0-TTS lists 16 languages. On Sume TTS you set the language field to a BCP-47 or ISO-639 code for every non-English transcript.
Seedance 2.5 480p: ratio 864:496 gives 854x480, Sume uses resolution
On Runway, Seedance 2.5 ratios 864:496 and 496:864 return 854x480 and 480x854. On Sume you ask for 480p with resolution plus aspect_ratio, never pixels.
Seedream 5.0 Flash: which Seedream 5 id Sume's catalog lists
Higgsfield added Seedream 5.0 Flash on Sep 23, 2026. Sume's image catalog lists seedream-5-lite and no Flash id. Check GET /v1/images/models before calling.
Vidu Q2 Pro Fast image-to-video 1080p vs Sume first frame
QwenCloud lists vidu/viduq2-pro-fast_img2video at 720P and 1080P. Sume has no Vidu id; send image_url as the first frame to a 1080p model.
Vidu Q3 ad reference-to-video vs Sume reference images
QwenCloud lists a Vidu Q3 ad reference-to-video model. Vidu is not in Sume's video ids; reference images work on models that list them.
Vidu Q3 drama character consistency vs Sume reference images
QwenCloud lists Vidu Q3 drama for character consistency. Vidu is not in Sume's ids; on Sume, references guide a clip, and frame_images win if both are sent.
Wan 3.0 Prime vs Wan 3.0: one wan-3.0 id on Sume
QwenCloud and Runway list Wan 3.0 and a Prime variant. Sume's catalog lists one id, wan-3.0, with 2-30 s clips. Check the catalog for limits.
Wan 3.0 is public after invite-only: check Sume's wan-3.0 id
QwenCloud says Wan 3.0 went from invite-only on August 6 to public. On Sume, wan-3.0 is a catalog id; check the live catalog for limits.
Nova Reel EOL September 30, 2026: moving video jobs to Sume
Bedrock lists Nova Reel as Legacy with an EOL date of September 30, 2026. Remap StartAsyncInvoke to a Sume video job and read results from media URLs.
Creatify Aurora 2.0 max audio length: 59.7 s, and how to split
Creatify Aurora 2.0 takes up to 59.7 s of audio; Aurora v1 takes 5 minutes. Sume Avatar Video accepts 4-60 s per job, so split longer scripts across jobs.
D-ID V4 expressives sentiment_id vs Sume's emotion string
D-ID picks a delivery with a sentiment_id preset; Sume TTS takes a free-text emotion string plus a 0.6-1.5 speed multiplier. How each one is set.
FLUX 1.1 Ultra raw mode and 4MP: what Sume image size accepts
Raw mode and 4MP belong to BFL's FLUX1.1 [pro] Ultra endpoint. Sume lists FLUX.2 ids and sizes images with aspect_ratio, resolution tiers and image_size.
FLUX.1 Kontext pro vs FLUX.2 for edits: what to use on Sume
BFL calls FLUX.1 Kontext [pro] previous-generation and recommends FLUX.2 for edits with up to 10 references. On Sume, use flux.2-pro with input_references.
FLUX.2 klein 4B Apache 2.0 vs 9B non-commercial, and Sume ids
BFL releases klein 4B weights under Apache 2.0 and 9B under the FLUX Non-Commercial License. Sume's image catalog lists flux.2-pro and flux.2-flex, not klein.