GPT-5 Mini

openai · 1M input + 1M output tokens · USD

Same model · same workloadGPT-5 MiniOfficial API baseline$2.25

OpenRouter1M input + 1M output$2.3738Model usage$2.25Credit purchase fee estimate+$0.12385.5% when purchasing credits, not per request

Vercel AI GatewayLowest gateway cost1M input + 1M output$2.25Model usage$2.25Gateway markup$0No token markup

Cloudflare AI Gateway1M input + 1M output$2.3625Model usage$2.25Unified Billing fee estimate+$0.11255% unified billing fee

Portkey1M input + 1M output$2.25 + planModel usage$2.25Platform planSeparate planProvider usage plus a separate platform plan

Official rates: $0.25/1M input + $2/1M outputUSD · excludes taxes, payment fees, discounts, and separate monthly plans

Estimated total uses 1 million input tokens plus 1 million output tokens. OpenRouter's funding estimate applies 5.5% to this amount for comparison; the real charge occurs when credits are purchased and has a $0.80 minimum per purchase. Taxes, payment charges, discounts, and monthly plans are excluded.