name = "OpenAI: GPT-5.5"
description = "Frontier GPT model for professional reasoning, coding, and multimodal work"
release_date = "2026-04-24"
last_updated = "2026-05-01"
attachment = true
reasoning_options = [{ type = "effort", values = ["none", "low", "medium", "high", "xhigh"] }]
reasoning = true
tool_call = true
temperature = false
open_weights = false

[cost]
input = 5.0
output = 30.0
cache_read = 0.5

[limit]
context = 1050000
output = 128000

[modalities]
input = ["text", "image", "pdf"]
output = ["text"]