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GPT 5.2

GPT 5.2 is the standard tier of the GPT-5.2 model family, advancing the GPT-5 series with improved reasoning, coding, and multimodal capabilities across the board.

Tool UseVision (Image)File InputReasoningImplicit Caching
index.ts
import { streamText } from 'ai'
const result = streamText({
model: 'openai/gpt-5.2',
prompt: 'Why is the sky blue?'
})

Frequently Asked Questions

  • How does GPT 5.2 improve over GPT-5.1?

    It advances reasoning, coding, and multimodal capabilities over GPT-5.1, representing a generational improvement in the GPT series.

  • What context window does GPT 5.2 support?

    400K tokens, supporting extensive document and codebase processing.

  • Should I migrate from GPT-5 to GPT 5.2?

    If your application benefits from improved reasoning and coding quality, yes. Test with your specific workloads to confirm the improvement justifies any pricing differences.

  • Does GPT 5.2 support function calling and structured outputs?

    Yes. It supports the full API feature set including function calling, structured outputs, vision, and system messages.

  • 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.

  • What are typical latency characteristics?

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