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GPT 5.4

GPT 5.4 is the standard tier of the GPT-5.4 model family, extending the agentic and reasoning capabilities of GPT-5.3 Codex to all domains including knowledge work, multi-step workflows, and analysis.

ReasoningTool UseVision (Image)File InputImplicit CachingWeb Search
index.ts
import { streamText } from 'ai'


const result = streamText({
  model: 'openai/gpt-5.4',
  prompt: 'Why is the sky blue?'
})
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About GPT 5.4

GPT 5.4 became available on March 5, 2026 on AI Gateway as the standard tier of the GPT-5.4 model family. It extends the agentic and reasoning leaps introduced in GPT-5.3 Codex to all domains, including knowledge work like reports, spreadsheets, presentations, and analysis.

The model handles complex multi-step workflows more reliably than previous generations, including tasks that involve tools, research, and pulling from multiple sources. It's faster and more token-efficient than GPT-5.2, delivering better results at lower cost per task.

With the context window of 1.1M tokens and the full API feature set, GPT 5.4 supports text, image, and mixed-modality inputs. If you're starting a new project or upgrading from an earlier GPT-5.x model, it's the default starting point for general-purpose work.