GPT-5.5 API
gpt-5-5OpenAICommercial use API verifiedText & reasoning
GPT-5.5 — frontier reasoning and generation through one API.
by OpenAI
Pricing: Input 140 credits / 1M tokens (≈ $1.4), Output 840 credits / 1M tokens (≈ $8.4). Cached Input 14 credits / 1M tokens (≈ $0.14) — applied automatically when the upstream reports cached tokens for your prompt; there is no field to request them.
Save up to 75%with the $1,250 top-up pack (+10% bonus) — 72% lower than direct rates even without itTop up24H Status Monitor
Operational24h agonow
MODEL
gpt-5-5
Tools
Web Search
Web search feeds the results back as input tokens, so a searched turn typically costs many times a normal turn (measured: 6–87×). Billed per token as usual — nothing extra per search.
Reasoning effort
Stream Response
Start a conversation with GPT-5.5
Input 140 · Output 840 cr / 1M · billed per token
You only pay for successful generations — if a task fails or returns no result, its credits are refunded automatically, never charged. And your credits never expire: top up once and spend at your own pace.1 credit = $0.01 USDTop up $1,250 for +10% bonus credits → up to ~9% more off every call.Top up credits
GPT-5.5 API pricing3 prices
Model & ModalityCredits / GenOur Price (USD)Direct / Standard Price (USD)Base savingsSavings with top-up$1,250 top-up · +10% credits
GPT-5.5, Input
textOpenAI
Credits / Gen140per million tokens
Our Price (USD)$1.4
Direct / Standard Price (USD)$5
Base savings−72.0%
Savings with top-up · $1,250 · +10%−75% ↓
GPT-5.5, Output
textOpenAI
Credits / Gen840per million tokens
Our Price (USD)$8.4
Direct / Standard Price (USD)$30
Base savings−72.0%
Savings with top-up · $1,250 · +10%−75% ↓
GPT-5.5, Cached Input
textOpenAI
Credits / Gen14per million tokens
Our Price (USD)$0.14
Direct / Standard Price (USD)$0.5
Base savings−72.0%
Savings with top-up · $1,250 · +10%−75% ↓
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