Seedream 4.5 · vercel

Seedream 4.5 is the latest in-house image generation model developed by ByteDance. Compared with Seedream 4.0, it delivers comprehensive improvements—especially in editing consistency, including better preservation of subject details, lighting, and color tone. It also enhances portrait refinement and small-text rendering. The model’s multi-image composition capabilities have been significantly strengthened, and both reasoning performance and visual aesthetics continue to advance, enabling more accurate and artistically expressive image generation.

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Prix, $ $0.04 / image

Contexte —

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Dernière vérification 04.11.2026 12:00:14 UTC

Source page du fournisseur

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API

API compatible OpenAI : les SDK officiels d'OpenAI fonctionnent avec cette URL de base. Remplacez YOUR_API_KEY par votre clé du fournisseur.

URL de base de l'API	`https://ai-gateway.vercel.sh/v1`
Point de terminaison	`https://ai-gateway.vercel.sh/v1/images/generations`
ID du modèle	`bytedance/seedream-4.5`

curl

curl https://ai-gateway.vercel.sh/v1/images/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "bytedance/seedream-4.5", "prompt": "a lighthouse at sunset", "n": 1, "size": "1024x1024"}'

Python

import requests

r = requests.post(
    "https://ai-gateway.vercel.sh/v1/images/generations",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
      "model": "bytedance/seedream-4.5",
      "prompt": "a lighthouse at sunset",
      "n": 1,
      "size": "1024x1024"
    },
)
print(r.json())

JavaScript

const r = await fetch("https://ai-gateway.vercel.sh/v1/images/generations", {
  method: "POST",
  headers: {Authorization: "Bearer YOUR_API_KEY", "Content-Type": "application/json"},
  body: JSON.stringify({
    "model": "bytedance/seedream-4.5",
    "prompt": "a lighthouse at sunset",
    "n": 1,
    "size": "1024x1024"
  }),
});
console.log(await r.json());

Requête (JSON)

{
  "model": "bytedance/seedream-4.5",
  "prompt": "a lighthouse at sunset",
  "n": 1,
  "size": "1024x1024"
}

Réponse (JSON)

{
  "created": 1760000000,
  "data": [
    {
      "url": "https://...",
      "b64_json": null
    }
  ]
}

L'adresse provient de la liste de modèles du fournisseur ; vérifiez-la dans sa documentation.

Documentation API du fournisseur

Source: AI Rate Card, https://airatecard.com/fr/c/offer%3Avercel%7Cbytedance/seedream-4.5, prices checked 2026-11-04; seller's page: https://vercel.com/ai-gateway/models/seedream-4.5

Détails techniques

ID: offer:vercel|bytedance/seedream-4.5