name = "GPT-5.1"
description = "Sharper GPT-5 generation for coding, product work, and tool-assisted tasks"
family = "gpt"
release_date = "2025-11-13"
last_updated = "2025-11-13"
attachment = true
reasoning = true
reasoning_options = [{ type = "effort", values = ["none", "low", "medium", "high"] }]
temperature = false
knowledge = "2024-09-30"
tool_call = true
structured_output = true
open_weights = false

[cost]
input = 1.25
output = 10.00
cache_read = 0.125

[limit]
context = 400_000
input = 272_000
output = 128_000

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