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Codex 5.1 Mini


Codex 5.1 Mini is OpenAI logoOpenAI's language model. A lightweight tier of OpenAI's Codex 5.1, optimized for fast, cost-efficient code generation with reduced latency.
Spec
Canonical IDopenai-codex-5-1-mini
TypeLanguage
StatusActive
CreatorOpenAIOpenAI
Providers
Input ModalitiesText
Output ModalitiesText

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Pricing by Provider

ProviderStandard
Input
$ / 1M
Cache Read
$ / 1M
Azure AI Foundry logo
Azure AI Foundry
openai:51codexmini
$0.250$0.025

Regional pricing

Provider-specific pricing that varies by region.
Azure AI Foundry logo
Azure AI Foundry
24 regions
RegionStandard
Input
$ / 1M
Cache Read
$ / 1M
Africa
South Africa North (Johannesburg)/ southafricanorth$0.250$0.025
Asia Pacific
Australia East (New South Wales)/ australiaeast$0.250$0.025
Japan East (Tokyo, Saitama)/ japaneast$0.250$0.025
Korea Central (Seoul)/ koreacentral$0.250$0.025
South India (Chennai)/ southindia$0.250$0.025
Canada
Canada East (Quebec)/ canadaeast$0.250$0.025
Europe
France Central (Paris)/ francecentral$0.275$0.028
Germany West Central (Frankfurt)/ germanywestcentral$0.250$0.025
Norway East (Norway)/ norwayeast$0.250$0.025
Poland Central (Warsaw)/ polandcentral$0.250$0.028
Spain Central (Madrid)/ spaincentral$0.275$0.028
Sweden Central (Gävle)/ swedencentral$0.275$0.028
Switzerland North (Zurich)/ switzerlandnorth$0.250$0.025
UK South (London)/ uksouth$0.250$0.025
West Europe (Netherlands)/ westeurope$0.250$0.028
Middle East
UAE North (Dubai)/ uaenorth$0.250$0.025
South America
Brazil South (Sao Paulo State)/ brazilsouth$0.250$0.025
US
Central US (Iowa)/ centralus$0.250$0.025
East US (Virginia)/ eastus$0.275$0.028
East US 2 (Virginia)/ eastus2$0.250$0.025
North Central US (Illinois)/ northcentralus$0.250$0.028
South Central US (Texas)/ southcentralus$0.250$0.028
West US (California)/ westus$0.275$0.028
West US 3 (Phoenix)/ westus3$0.250$0.028

Cost Calculator

Preset:
Compares every provider & tier in USD

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Codex 5.1 MiniCurrent
Codex Mini200K$1.50$6.00Available

Other models

ModelTierReleasedContextInput / 1MOutput / 1M
Codex 5.1
Codex 5.1 Max
Codex 5.2
Codex 5.3

Model IDs