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GPT-5 pro

GPT-5 pro is the highest-capability tier in the GPT-5 family, offering extended compute for the most demanding tasks, deeper reasoning, more thorough analysis, and higher-quality output for problems where standard GPT-5 reaches its limits.

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


const result = streamText({
  model: 'openai/gpt-5-pro',
  prompt: 'Why is the sky blue?'
})
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Frequently Asked Questions

  • How does GPT-5 pro differ from standard GPT-5?

    It applies more compute per request, enabling deeper reasoning and more thorough analysis. Improvements are most apparent on genuinely hard problems; on simple tasks the difference may be minimal.

  • When should I use GPT-5 pro versus GPT-5?

    Use it selectively for your hardest queries, complex analysis, critical code review, high-stakes content, and tasks where quality directly impacts outcomes. Use standard GPT-5 for routine traffic.

  • What context window does GPT-5 pro support?

    400K tokens, matching the GPT-5 family.

  • Is GPT-5 pro slower than GPT-5?

    It may take longer per request due to the additional compute applied. For latency-sensitive applications, consider routing only specific queries to the pro tier.

  • How does AI Gateway handle authentication for GPT-5 pro?

    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.