2026-04-24 CometAPI Adds GPT-5.5 & GPT-Image-2 Series!

GPT-5.5 Series

• Models: gpt-5.5-all / gpt-5.5-medium-all / gpt-5.5-high-all / gpt-5.5-xhigh-all / gpt-5.5-low-all
• Details: Designed to cover varying levels of task complexity.
  *Note: All models above support standard Chat and Response interaction formats.
  • Chat Guide ｜ Response Guide

GPT-Image-2 Series

• Model: gpt-image-2-all (Multimodal and image generation model)
• Endpoints:
  *Chat Completions (/v1/chat/completions): Supports multimodal inputs (image-to-image) and complex instructions.Note: supports stream: true only.Reference Guide
  *Image Generations (/v1/images/generations): Supports standard text-to-image generation. Reference Guide