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GPT-5 mini

GPT-5 mini delivers GPT-5 family intelligence at a reduced cost tier, making advanced reasoning, coding, and multimodal capabilities accessible for high-volume production workloads where full GPT-5 pricing is impractical.

File InputReasoningTool UseVision (Image)Implicit Caching
index.ts
import { streamText } from 'ai'


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

Frequently Asked Questions

  • How does GPT-5 mini compare to GPT-4o mini?

    GPT-5 mini is the next generation of OpenAI's mid-tier model, delivering improved reasoning, coding, and instruction following compared to GPT-4o mini.

  • What context window does GPT-5 mini support?

    400K tokens, enabling extensive document processing and conversation history retention.

  • When should I use full GPT-5 instead of mini?

    When the task demands maximum capability, particularly on complex reasoning, nuanced writing, or challenging coding problems where the quality gap is measurable and consequential.

  • Does GPT-5 mini support function calling and structured outputs?

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

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

    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 is the pricing for GPT-5 mini?

    Pricing appears on this page and updates as providers adjust their rates. AI Gateway routes traffic through the configured provider.

  • What are typical latency characteristics?

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