GPT-5.5 API Pricing
GPT-5.5 costs $5.00 per 1M input tokens and $30.00 per 1M output tokens. Prices were last refreshed on from the AI Pricing Guru daily pricing pipeline.
Cost examples
These examples use published list prices only. They exclude taxes, enterprise discounts, minimum charges, retries, batch discounts, and provider-specific billing rules.
1M input + 1M output
$55.00
A direct per-million comparison against every other text model.
100K input + 25K output
$1.25
A compact chat, summarization, or analysis workload.
10M input + 2M output
$190.00
A monthly production estimate for heavier RAG or agent traffic.
75% cached input + 250K output
$14.50
Cached input is about 90% cheaper than standard input at list price.
Calculator for GPT-5.5
Enter your own input, output, and cached-token assumptions. This calculator is preloaded with only GPT-5.5, so the result stays focused on this model.
Input cost
$10.00
Output cost
$45.00
Total
$55.00
Long-context rates apply because this request exceeds 272,000 input tokens.
Price history
No list-price movement across 155 daily snapshots from 2026-04-25 to 2026-09-27.
When to use GPT-5.5
Good fit
- code generation, debugging, and agentic development work where output quality affects engineering time
Be careful with
- bulk summarization or simple classification where cheaper models can pass evaluation
- decisions that depend on unpublished context-window limits without checking the provider docs first