Model

GPT-5.5

OpenAI pricing snapshot last checked on 2026-04-24.

Pricing Snapshot

Input rate

$5.00 / 1M

Cached-input rate

$0.50 / 1M

Output rate

$30.00 / 1M

Batch discount

50%

Provider

OpenAI

Family

gpt

Context window

1,000,000

Max output

128,000

Coding agent cost calculator

Estimate output-heavy coding assistant usage where long generations can dominate cost.

GPT-5.5 was added from OpenAI's public API pricing preview while the developer model detail page is not yet published.

2026-04-24