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OpenAI: GPT-5.1-Codex

OpenAI · family gpt-5.1-codex

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

Current offers

OpenRouterAggregator

openai/gpt-5.1-codex · 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$0.13per 1M tokens0.00000013
InputStandardDefault context$1.25per 1M tokens0.00000125
OutputStandardDefault context$10.00per 1M tokens0.00001

Active promotions

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