Model notes

Prices change; read the current price on each model page before running paid jobs. Every request field is documented in the API reference at https://apiko.app/docs.

Nano Banana 2.1 and Nano Banana Pro (image edit and generation)

• Model page: Nano Banana 2.1, Nano Banana Pro
• Endpoints: POST /v1/images/generations (text to image), POST /v1/images/edits with images (array of reference image URLs).
• resolution: 1k (default), 2k, 4k. Each tier has its own price per image.
• Timing seen in production: a 2K edit takes about a minute; 4K is close to 2K at the median but one in ten 4K jobs takes over four minutes.
• Results may be JPEG or PNG; check the Content-Type.

GPT Image 2.5 Sunburst, GPT Image 2.5 Flare, GPT Image 2

• Model page: GPT Image 2.5 Sunburst, GPT Image 2.5 Flare, GPT Image 2
• Endpoints: POST /v1/images/generations, POST /v1/images/edits (JSON body with images).
• size: an aspect ratio such as 1:1, 16:9, 3:2, or one of the exact sizes listed in the model's API reference (e.g. 1024x1024). Other pixel sizes are rejected before any charge.
• Prompt limit: 32,000 characters.

Wan 3.0 (text, image and reference to video)

• Model pages: Wan 3.0 text-to-video, image-to-video, reference-to-video; Prime versions add -prime- to the id.
• Endpoint: POST /v1/videos; read the task with GET /v1/videos/{id} (video_url) or GET /v1/tasks/{id}.
• duration: 2–30 seconds. resolution: 480p, 720p (default), 1080p. aspect_ratio: adaptive, 16:9, 9:16, 1:1.
• Reference-to-video fields: reference_image_urls (up to 10), reference_videos (up to 5 clips, 1–15 s each, 15 s total), reference_audios (wav or mp3, not billed). In the prompt, call them "Image 1", "Video 1", "Audio 1" in the order sent.
• Billing: output seconds × the per-second price of the resolution. For reference-to-video, the length of the reference clips is added: 5 s of output with a 3 s reference clip bills 8 s. Submission temporarily holds 15 s per distinct reference clip and refunds the difference when the task finishes. Reference length plus duration must stay within 30 s.
• Timing: 480p short clips about 1.5–2 minutes; 1080p with references has taken from 4.5 to over 12 minutes. Poll with a deadline of 20 minutes or pass callback_url.

Seedance 2.5, 2.0, 2.0 Fast, 2.0 Mini

• Model pages: Seedance 2.5, Seedance 2.0, Seedance 2.0 Fast, Seedance 2.0 Mini
• Endpoint: POST /v1/videos. Billed per second of output by resolution. Check the model's API reference for its exact fields before sending.

Seedream 5.0 Pro

• Model page: Seedream 5.0 Pro
• Endpoint: POST /v1/images/generations. Priced per image.

Uploading local reference images

POST /v1/uploads/images with the raw bytes of a JPEG, PNG or WebP (up to 10 MB) and its Content-Type. It is free, returns a public url, and the file is kept for 72 hours. Anyone with the URL can open it.