# GPT 5\.4 is now on AI Gateway

**Published:** March 5, 2026 | **Authors:** Walter Korman, Rohan Taneja, Jerilyn Zheng

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GPT-5.4 and GPT-5.4 Pro are now available on AI Gateway.

This model brings the agentic and reasoning leaps from GPT-5.3-Codex to all domains. This includes knowledge work like reports, spreadsheets, presentations, and analysis in addition to coding. It handles complex multi-step workflows more reliably, including tasks that involve tools, research, and pulling from multiple sources. GPT-5.4 is faster and also more token-efficient than previous iterations (GPT-5.2). GPT-5.4 Pro is for developers who need maximum performance on the most complex tasks.

To use this model, set model to `openai/gpt-5.4` or `openai/gpt-5.4-pro` in the AI SDK.

```tsx
import { streamText } from 'ai';
const result = streamText({
  model: 'openai/gpt-5.4',
  prompt:
    `Refactor our API layer to use the new auth SDK, update the
     affected tests and docs, then generate a migration guide
     for the rest of the team.`,
});
```

AI Gateway provides a unified API for calling models, tracking usage and cost, and configuring retries, failover, and performance optimizations for higher-than-provider uptime. It includes built-in [observability](https://vercel.com/docs/observability/ai-sdk-observability), [Bring Your Own Key](https://vercel.com/docs/ai-gateway#bring-your-own-key) support, and intelligent provider routing with automatic retries.

Learn more about [AI Gateway](https://vercel.com/ai-gateway), view the [AI Gateway model leaderboard](https://vercel.com/ai-gateway/leaderboards) or try it in our [model playground](https://vercel.com/ai-gateway/models/gpt-5.4).

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📚 **More updates:** [View all changelog entries](/changelog/sitemap.md) | [Blog](/blog/sitemap.md)