GPT 5.1 Codex Mini

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gpt-5.1-codex-mini

OpenAI|Created Nov 13, 2025

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GPT-5.1-Codex-Mini is a more compact and faster variant of GPT-5.1-Codex.

Overview Specifications Activity Performance Uptime Examples

Pricing-50%

Pay-as-you-go rates for this model. More details can be found here.

Input Tokens (1M)

$0.13

Cached Input Tokens (1M)

$0.01

Output Tokens (1M)

$1.00

Capabilities

Input Modalities

TextImage

Output Modalities

Text

Supported Parameters

Available parameters for API requests

Frequency PenaltyFunction CallFunctionsLogit BiasMax Completion TokensParallel Tool CallsPredictionPresence PenaltyReasoning EffortResponse FormatStopTool ChoiceToolsWeb Search Options