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GPT 5.2

GPT 5.2 is the premium tier of the GPT-5.2 family, applying maximum compute for the most demanding tasks where the deepest reasoning and highest quality output are required.

Tool UseVision (Image)Implicit CachingReasoningFile InputWeb Search
index.ts
import { streamText } from 'ai'


const result = streamText({
  model: 'openai/gpt-5.2-pro',
  prompt: 'Why is the sky blue?'
})
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Frequently Asked Questions

  • How does GPT 5.2 differ from standard GPT-5.2?

    It applies more compute per request, producing deeper reasoning and higher-quality output on hard problems. On simple tasks the difference may be minimal.

  • When is the pro tier justified?

    For high-stakes analysis, mission-critical decisions, expert-level content, and tasks where the quality difference over standard GPT-5.2 directly impacts outcomes.

  • What context window does GPT 5.2 support?

    400K tokens, matching the GPT-5.2 family.

  • How does AI Gateway handle authentication for GPT 5.2 ?

    AI Gateway accepts a single API key or OIDC token for all requests. You don't embed OpenAI credentials in your application; AI Gateway routes and authenticates on your behalf.

  • Is GPT 5.2 slower than standard GPT-5.2?

    It may take longer per request due to the additional compute. For latency-sensitive applications, route only specific high-value queries to the pro tier.

  • What are typical latency characteristics?

    This page shows live throughput and time-to-first-token metrics measured across real AI Gateway traffic.