OpenAI: GPT-5.1-Codex-Max

OpenAI · family gpt-5.1-codex-max

Identity and capabilities

Status
active
Context window
400,000
Maximum output
128,000
Image input
Yes
Reasoning
Yes
Tool calling
Yes
First seen
2026-08-08 09:49:33Z UTC
Last verified

Known source identifiers: openrouter: openai/gpt-5.1-codex-max

Current offers

OpenRouterAggregator

openai/gpt-5.1-codex-max · availability available · · source official api

Provider limits: context 400,000 · maximum output 128,000 · vision Yes · reasoning Yes · tool use Yes

Pricing components as published by the source
ComponentService tierContextPriceUnitAs published
Cached inputStandardDefault context$0.125per 1M tokens0.000000125
InputStandardDefault context$1.25per 1M tokens0.00000125
OutputStandardDefault context$10.00per 1M tokens0.00001

Active promotions

No officially confirmed promotion applies to this model.