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GPT 5.4 is now on AI Gateway

GPT-5.4 is now live on AI Gateway. Faster, more token-efficient, built for multi-step agentic workflows.

Reporting by Vercel Blog 1 min brief
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The KeyNews take

Why it matters

Vercel's AI Gateway expands model access to GPT-5.4, making OpenAI's latest reasoning and agentic capabilities available to developers via unified API with cost tracking and provider routing—lowering friction for production AI app deployment.

The key facts

6 to know

  1. GPT-5.4 and GPT-5.4 Pro now available on Vercel AI Gateway

  2. Improved token efficiency vs. GPT-5.2

  3. Enhanced reasoning and agentic capabilities from GPT-5.3-Codex

  4. Supports multi-step workflows with tools, research, and multi-source data pulls

  5. AI Gateway includes observability, BYOK support, intelligent provider routing, automatic retries

  6. Model leaderboard and playground available for testing

Go to the source

Vercel Blogvercel.com

Publisher excerpt: 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…
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