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o3-mini

o3-mini is a cost-efficient reasoning model in the o3 family, delivering strong chain-of-thought performance on math, code, and science at a fraction of full o3's cost, with configurable reasoning effort for flexible cost-quality tradeoffs.

File InputReasoningTool UseImplicit Caching
index.ts
import { streamText } from 'ai'
const result = streamText({
model: 'openai/o3-mini',
prompt: 'Why is the sky blue?'
})