› Update, 9 Nov 2026 (evening): I have since opened a WaveSpeedAI account and tested Seedream 5.5 on 35 images.
› Results and a gallery are in the section “I tested Seedream 5.5” below.On the morning of 9 November 2026, ByteDance published an announcement for Seedream 5.5, a new version of its image generation model, on the ByteDance Seed team blog.
› Later that afternoon, I checked eight platforms where I typically generate ByteDance images or access their APIs: the BytePlus ModelArk price list, Dreamina, fal.ai, OpenRouter, Replicate, Higgsfield, reAPI, and FlashBoards.
› I found a working public Seedream 5.5 API on exactly one third-party provider where I do not have an active account.