You can now access gpt-oss-20b and gpt-oss-120b by OpenAI , open-weight reasoning models designed to push the open model frontier, using Vercel's AI Gateway with no other provider accounts required. AI Gateway lets you call the model with a consistent unified API and just a single string update, track usage and cost, and configure performance optimizations, retries, and failover for higher than provider-average uptime. To use it with the AI SDK v5 , start by installing the package: Then set the model to either openai/gpt-oss-20b or openai/gpt-oss-120b : import { streamText } from 'ai' const result = streamText ( { model : "openai/gpt-oss-120b" , // or openai/gpt-oss-20b prompt : "Generate an ansi animation of sutro tower" } ) Includes built-in observability , Bring Your Own Key support , and intelligent provider routing with automatic retries.…