GPT-5.5 is now available on Vercel AI Gateway. Two variants: GPT-5.5 and GPT-5.5 Pro, both tuned for long-running agentic work across coding, computer use, knowledge work, and scientific research.
GPT-5.5 excels at agentic coding and long-horizon work with strong context retention. GPT-5.5 Pro targets demanding, multi-step work prioritizing response quality over latency, with gains in business, legal, education, data science, and technical research workflows.
Use model openai/gpt-5.5 or openai/gpt-5.5-pro in the AI SDK. AI Gateway provides unified API access with custom reporting, observability, Bring Your Own Key support, and intelligent provider routing with automatic retries.
Fetched April 28, 2026