OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API
4 hours ago
- #Product Releases
- #AI Models
- #API Updates
- GPT-5.5 released in April 2026 with 1M token context, image input, and professional features.
- GPT Image 2 introduced with advanced image generation and editing capabilities.
- Agents SDK updated with sandboxing and memory control.
- GPT-5.4 models (mini and nano) released in March 2026 for efficient workloads.
- Sora API expanded for longer video generation and editing.
- Responses API enhanced with tools like phase, WebSocket, and Skills support.
- GPT-5.2 launched in December 2025 with improved intelligence and compaction.
- GPT-5.1 released in November 2025 with coding optimizations and RBAC.
- Enterprise features like EKM and UK data residency added.
- Realtime API and GPT-5 family became generally available in 2025.
- New reasoning models (o3, o4-mini) and GPT-4.1 models introduced in 2025.
- Responses API and Agents SDK launched for agentic workflows in March 2025.
- GPT-4.5 preview and data residency in Europe announced in early 2025.
- o1 reasoning models and fine-tuning updates released in late 2024.
- GPT-4o and GPT-4o mini launched in 2024 for fast, affordable AI.
- Assistants API and Batch API enhanced with new features in 2024.
- Early 2024 updates included embeddings V3, GPT-4 Turbo, and project hierarchies.
- GPT-4 Turbo preview and Assistants API introduced in late 2023.
- Fine-tuning and function calling improvements made throughout 2023-2025.