gpt-5.5-pro-2026-04-23 (gpt-5.5-pro-2026-04-23) is a chat model from openai with a 1.1M-token context window; capabilities tools, vision, reasoning; input image, pdf, text; output text.
1.1MContext
128KMax output
$30$ / 1M in
Pricing
Input
$30 / 1M tokens
Output
$180 / 1M tokens
Currency
USD
Note
Indicative US list price — verify with the vendor.
Indicative US list price — a reference only, verify with the vendor. Source: litellm. Last verified 2026-07-22.