Guides
Sume guides: the API, Formats, agents, models, media tools and pricing, each answer dated and sourced.
Gemini editing in YouTube Shorts: how does it work?
YouTube says you prompt a first draft, then refine by reordering, trimming pauses and syncing music. Here is which of those steps map to separate API calls.
Gemini Live Avatar: 97 languages and SynthID, explained
Google says Gemini 3.8 Live Avatar covers 97 languages and adds SynthID to audio and video. What each claim covers, and what it says about other avatar tools.
Gemini Omni 1.1 Flash 360p drafts: what a cheap preview costs
Gemini Omni Flash 1.1 can render 360p previews. On Sume a 360p second is billed at 30% of a 720p second, so drafts cost less than finals.
Gemini Omni Flash 4K: clip length, upscaling and price
Gemini Omni Flash 1.1 renders 4K clips of 3 to 10 seconds on Sume, and Google labels its 4K output upscaled. Length versus Veo 3.1, plus cost.
Gemini Omni Flash prompt guide: one shot, audio, text
Google's Omni Flash prompt tips: ask for a single continuous shot, put negatives in the prompt, describe the audio, spell out on-screen text. Plus a Sume call.
Gemini Omni Flash vs Veo 3.1: which does Google recommend when
Google's video page names Gemini Omni Flash the default, Veo 3.1 for scene extension, last-frame control or legacy pipelines. Facts side by side, plus Sume ids.
Gemini Omni prompt timecodes: [0-3s] and scene cuts
Gemini Omni Flash takes timing in plain words or a [0-3s] timecode syntax, so you can script cuts inside one clip. Google's examples and a 10-second Sume call.
Gemini Omni video edit prompts that keep everything else the same
Google says short prompts work best when you edit a video with Gemini Omni Flash, and to add Keep everything else the same. Examples, limits and a Sume call.
Gemini Omni reference video: is the audio used? No
Gemini Omni Flash accepts video references but not audio: Google says audio in a reference clip is ignored. Limits, Sume's fields, and models that take audio.
Does Gemini Omni video have a SynthID watermark?
Google says all Gemini Omni Flash videos include an invisible SynthID watermark. What that means for API clips, YouTube disclosure, and what Sume's docs say.
Gemini Omni in YouTube Create: countries, length and limits
Gemini Omni in YouTube Create makes vertical clips up to 10 seconds on mobile in five countries. Google's limits, and how to get a 9:16 clip from Sume instead.
Google Flow video length: 4 to 10 seconds by model
Google Flow makes 4, 6 and 8 second clips with Veo 3.1 and 4 to 10 seconds with Gemini Omni Flash 1.1. Length by model and mode, from Google's help page.
Google Play feature graphic size (1024×500) and AI images
Google Play asks for a 1024×500 feature graphic. Sume's ChatGPT Image 2.5 cannot output that exact size, so generate the same shape larger and resize.
GPT-6 Astra async tool calls: what a slow video job means for agents
OpenAI's GPT-6 guide describes async tool calling with async: true and call_id. How that maps to a video job that takes minutes, and where Sume's job ids fit.
GPT-6 Astra tool calling needs the Responses API: meaning for Sume
OpenAI says GPT-6 Astra supports Chat Completions but its tool calling requires Responses. Use the Responses mcp tool for Sume, not a chat.completions loop.
GPT-6 Sol and Luna in Codex: keep your Sume MCP server across models
Codex added GPT-6 Sol and Luna to its model picker in late September. Your Sume MCP server is configured per Codex, not per model, so switching needs no change.
How long does GPT Image 2.5 take? Time your own jobs on Sume
Sume publishes no per-model image time for GPT Image 2.5, only a 30-second wait budget. A short curl script times your own prompts by quality and size.
GPT Image 2.5 arena: run your own blind test through the API
Arena leaderboards rank images on other people's prompts. Here is a blind three-way test of Flare, Sunburst and GPT Image 2 on yours, with one script on Sume.
GPT Image 2.5 background: transparent vs opaque in the API
Sume accepts background auto, transparent or opaque on the two GPT Image 2.5 ids only. What opaque does, what a bad value returns, and which models reject it.
GPT Image 2.5 comments on an image: review notes as mask edits
Sume's image API has no comment field. To act on several notes about one picture, send one masked edit per note and feed each result into the next request.
GPT Image 2.5 SVG output: why the API rejects svg
GPT Image 2.5 on Sume advertises png, jpeg and webp. Asking for svg returns a 400 that lists the accepted formats. How to check and what to do for vector art.
GPT Image 2.5 auto quality: why the reserve is the max price
quality auto on GPT Image 2.5 reserves the max amount on Sume, not the amount you end up paying. How reserve differs from charge, and how to size a batch.
GPT Image 2.5 xhigh vs max: what the extra tier costs per image
At 1024x1024, max output costs about 2.25 times xhigh before Sume pricing. The per-image and per-100-image numbers, and a small test to decide if max earns it.
GPT Image 2 vs GPT Image 2.5: what changes when you migrate
GPT Image 2 stays selectable on Sume. Moving to 2.5 means a new model id and new limits: six quality values, 16 references, mask_url. Old requests keep working.
GPT Image 2.5 API price: token rates and per-image estimates
GPT Image 2.5 is priced in tokens: $30 per million output image tokens. See the per-image reserve on Sume at 1024, 1920x1088 and 4K for each quality level.
GPT Image 2.5 Flare vs Sunburst: what each model page says
OpenAI calls Flare its model for everyday image generation and Sunburst its most capable for generation and editing. What each page lists, and both ids on Sume.
GPT Image 2.5 image editing API: edit a photo with a prompt
Edit a photo with GPT Image 2.5 on Sume: send the image in input_references, describe the change, and set aspect_ratio to auto. Up to 16 references per call.
GPT Image 2.5 in Codex: what OpenAI says, and API options
OpenAI says ChatGPT Images 2.5 is available to Codex users. To call GPT Image 2.5 from your own code or agent, Sume offers hosted MCP and a REST API.
GPT Image mask edit API: how to use mask_url on GPT Image 2.5
GPT Image 2.5 on Sume takes an optional mask_url for edits. OpenAI says the mask needs an alpha channel and only guides the edit. The request and the limits.
GPT Image 2.5 multi-round edits: chain edits on one image via API
To make several edits to one picture with GPT Image 2.5, feed each result back as a reference. What fal says Sunburst preserves, and what to check each round.
GPT Image 2.5: how many images can I generate per request?
On Sume, GPT Image 2.5 takes n from 1 to 4 images per request, billed per image. How to ask for several versions and what a 202 means for a larger n.
GPT Image 2.5 output format: png, jpeg or webp on Sume
GPT Image 2.5 on Sume returns png, jpeg or webp through output_format. Which to pick for transparency and speed, and what output_compression does on Sume today.
GPT Image 2.5 quality levels: low, medium, high, xhigh, max and auto
GPT Image 2.5 has six quality values: auto, low, medium, high, xhigh and max. What each does to price on Sume and which one runs when you send nothing.
GPT Image 2.5 reference images: how many you can send and how to use
GPT Image 2.5 on Sume accepts up to 16 reference images per request, six more than GPT Image 2. How to label each image's job in the prompt and what to check.
GPT Image 2.5 release date and model ids: Flare and Sunburst
OpenAI's GPT-Image-2.5 Flare and Sunburst carry the snapshot date 2026-09-08. The model ids, dated snapshots, and how Sume names the same two models.
GPT Image 2.5 resolution: the size rules and the 4K ceiling
GPT Image 2.5 takes custom sizes: both edges a multiple of 16, longest edge 3840, 655,360 to 8,294,400 pixels. What that means for 1080p, 1440p and 4K.
GPT Image 2.5 image URL expired? Save the file in Node
Sume returns GPT Image 2.5 results as signed URLs, not base64, and its docs give no lifetime. Download each file when the call returns. Node example.
Sketch to image with GPT Image 2.5 API: send a drawing as a reference
To turn a sketch into a finished image with GPT Image 2.5 on Sume, send the drawing in input_references and describe the result. The request, size tips, limits.
GPT Image 2.5 transparent background: how to request a cutout by API
GPT Image 2.5 on Sume accepts background transparent. OpenAI says transparency needs png or webp output. The request, the catch, and when to use another route.
GPT Image 2.5 400 unsupported_parameter: fields each model accepts
A 400 unsupported_parameter from Sume's image API means the model does not list that field. Which GPT Image ids accept quality, mask_url and background.
Grok 4.7 remote MCP tool: connect Sume to the xAI Responses API
xAI's remote MCP tool works with grok-4.7 on the Responses API. Point server_url at Sume's hosted MCP, restrict allowed_tools, and cap spend on the Sume side.
Grok Build: add Sume's hosted MCP server with grok mcp add
Grok Build takes remote MCP servers via grok mcp add --transport http. Add mcp.sume.com, pass an API key header or use OAuth, and check with grok mcp doctor.
Grok Imagine image API: the x-ai/grok-image id on Sume
Sume lists Grok Imagine as x-ai/grok-image on its image API: thirteen aspect ratios (no 4:5), one reference image for edits, and a $0.025 price line per image.
Grok Imagine aspect ratio: 21:9 and 5:2 on xAI vs Sume
xAI added 21:9 and 5:2 to Grok Imagine image on Aug 28. Which ratios Sume's grok-image accepts, what the 400 looks like, and a call that works.
Grok Imagine Video 1.5 reference images API: xAI vs Sume
xAI's API takes up to seven reference images, text-to-video and 1080p for Grok Imagine Video 1.5. Sume's API reference lists it as first-frame image-to-video.
AI video HDR and EXR export: what Sume's outputs are
Luma says Ray3.2 has native HDR with 16-bit EXR export. Sume's docs describe MP4 outputs and no HDR or EXR; here is where that matters in a finishing pipeline.
How does YouTube count Shorts views? Engaged views explained
Since 3/31/2025 a Shorts view counts every start or replay, with no minimum watch time. Engaged views is the old metric, and YPP still uses it.
How long can a song play in a YouTube Short? 90 seconds
YouTube says most Shorts Audio Library songs work for up to 90 seconds in a Short up to 3 minutes; some tracks are limited to 60 or 30 seconds.