Vercel Adds GPT-5.5 and GPT-5.5 Pro to AI Gateway for Agentic Workflows

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Vercel integrated OpenAI's new GPT-5.5 and GPT-5.5 Pro models into its AI Gateway, enabling developers to call them directly through the AI SDK without separate provider accounts. These models are specifically tuned for long-running autonomous tasks like agentic coding and multi-step research where maintaining context across large systems is critical.

Vercel, a frontend cloud platform and creator of the AI SDK, added GPT-5.5 and GPT-5.5 Pro to its AI Gateway. These models are optimized for agentic AI (systems that autonomously plan and execute multi-step tasks) and offer improved token efficiency. Developers can access them using the openai/gpt-5.5 or openai/gpt-5.5-pro model strings.
Models
GPT-5.5 and GPT-5.5 Pro
Platform
Vercel AI Gateway
Optimization
Long-running agentic work
Efficiency
Higher token efficiency than GPT-5.4
Access
Vercel AI SDK
Pricing
No markup over provider rates

This integration mirrors OpenAI's GPT-5.5 launch, shifting focus from reactive chat to long-horizon workflows. It builds on the platform's strategy of bringing frontier models to developers with enterprise-grade reliability. By hosting models on a unified gateway, Vercel removes the friction of managing multiple provider accounts.

Use these models for agentic coding, computer use (AI capability to control software interfaces), and multi-pass document critiquing. Vercel's move mirrors the deployment of persistent autonomous agents on other infrastructure providers. GPT-5.5 excels at carrying changes through codebases, while the Pro variant is built for high-stakes research where quality outweighs latency.

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GPT-5.5 and GPT-5.5 Pro are live on AI Gateway. Built for long-running agentic work and more token-efficient than GPT-5.4. Use ๐š–๐š˜๐š๐šŽ๐š•: '๐š˜๐š™๐šŽ๐š—๐šŠ๐š’/๐š๐š™๐š-๐Ÿป.๐Ÿป' or '๐š˜๐š™๐šŽ๐š—๐šŠ๐š’/๐š๐š™๐š-๐Ÿป.๐Ÿป-๐š™๐š›๐š˜' to get started. https://t.co/x3Fn3EW3wK

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Still wondering? A few quick answers below.

GPT-5.5 is a frontier model from OpenAI designed for long-running agentic work, where the AI plans and executes multi-step tasks independently. Compared to GPT-5.4, it is more token-efficient and better at maintaining context across large systems. It excels at agentic coding and computer use, allowing it to operate software and create complex documents.

GPT-5.5 is optimized for agentic coding and long-horizon tasks where speed and context are balanced. GPT-5.5 Pro is built for demanding workflows where output quality is more important than latency. It is specifically tuned for multi-step processes like legal critiquing, scientific research, and data science that require the model to stress-test its own arguments.

Developers can access these models through the Vercel AI Gateway by using the Vercel AI SDK. To get started, set the model parameter to either openai/gpt-5.5 or openai/gpt-5.5-pro. The gateway provides a unified API for calling the models while handling usage tracking, cost monitoring, and automatic retries for higher uptime.

Vercel provides access to GPT-5.5 and GPT-5.5 Pro on the AI Gateway with no price markup. Users do not need separate provider accounts to get started. The gateway also includes features for tracking usage and costs across different models, along with intelligent provider routing and failover optimizations to ensure performance.

GPT-5.5 features computer-use skills that allow it to interact directly with software interfaces. It can turn raw source material into structured documents, spreadsheets, or slide presentations. This capability is paired with its ability to hold context across large systems, making it effective for carrying complex changes through an entire codebase or research project.

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