name = "GPT-5.1 Codex"
description = "Codex GPT for repository edits, code review, and practical software agents"
family = "gpt-codex"
release_date = "2025-11-13"
last_updated = "2025-11-13"
attachment = true
reasoning = true
temperature = false
tool_call = true
structured_output = true
knowledge = "2024-09-30"
open_weights = false

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

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