GPT-5.1 Codex Max — Invokeable

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GPT-5.1 Codex Max

model gpt-5.1-codex-max

Draft entry — numbers not yet verified against primary sources.

400K

context

128K

max output

$1.25/M

input

$10.00/M

output

2024-09

knowledge cutoff

2

providers

01Providers

Provider	Provider model ID	In $/M	Out $/M	Context	Status
OpenAI API	gpt-5.1-codex-max	1.25	10.00	400K	live
OpenRouter	openai/gpt-5.1-codex-max	1.25	10.00	400K	live

02Invoke

provider

language