Codex 5.1 Max
Codex 5.1 Max is OpenAI's language model. The maximum-capability tier of OpenAI's Codex 5.1, targeting complex multi-step coding and agentic software development workflows.
OpenAI's language model. The maximum-capability tier of OpenAI's Codex 5.1, targeting complex multi-step coding and agentic software development workflows.Capabilities
Input1/5
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Output1/5
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Capabilities0/13
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Pricing by Provider
| Provider | Standard | |
|---|---|---|
| Input $ / 1M | Cache Read $ / 1M | |
 Azure AI Foundry | $1.25 | $0.125 |
Regional pricing
Provider-specific pricing that varies by region.
Azure AI Foundry
24 regions
| Region | Standard | |
|---|---|---|
| Input $ / 1M | Cache Read $ / 1M | |
| Africa | ||
| South Africa North (Johannesburg)/ southafricanorth | $1.25 | $0.125 |
| Asia Pacific | ||
| Australia East (New South Wales)/ australiaeast | $1.25 | $0.125 |
| Japan East (Tokyo, Saitama)/ japaneast | $1.25 | $0.125 |
| Korea Central (Seoul)/ koreacentral | $1.25 | $0.125 |
| South India (Chennai)/ southindia | $1.25 | $0.125 |
| Canada | ||
| Canada East (Quebec)/ canadaeast | $1.25 | $0.125 |
| Europe | ||
| France Central (Paris)/ francecentral | $1.25 | $0.125 |
| Germany West Central (Frankfurt)/ germanywestcentral | $1.38 | $0.125 |
| Norway East (Norway)/ norwayeast | $1.25 | $0.125 |
| Poland Central (Warsaw)/ polandcentral | $1.38 | $0.125 |
| Spain Central (Madrid)/ spaincentral | $1.25 | $0.138 |
| Sweden Central (Gävle)/ swedencentral | $1.38 | $0.125 |
| Switzerland North (Zurich)/ switzerlandnorth | $1.25 | $0.125 |
| UK South (London)/ uksouth | $1.25 | $0.125 |
| West Europe (Netherlands)/ westeurope | $1.38 | $0.125 |
| Middle East | ||
| UAE North (Dubai)/ uaenorth | $1.25 | $0.125 |
| South America | ||
| Brazil South (Sao Paulo State)/ brazilsouth | $1.25 | $0.125 |
| US | ||
| Central US (Iowa)/ centralus | $1.25 | $0.138 |
| East US (Virginia)/ eastus | $1.25 | $0.125 |
| East US 2 (Virginia)/ eastus2 | $1.25 | $0.125 |
| North Central US (Illinois)/ northcentralus | $1.38 | $0.125 |
| South Central US (Texas)/ southcentralus | $1.25 | $0.125 |
| West US (California)/ westus | $1.38 | $0.138 |
| West US 3 (Phoenix)/ westus3 | $1.25 | $0.125 |
Cost Calculator
Preset:
Compares every provider & tier in USD
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| Codex 5.1 Max | — | — | — | — | Current |
| Codex 5.1 | — | — | — | — | Available |
| Codex 5.1 Mini | — | — | — | — | Available |
| Codex 5.2 | — | — | — | — | Available |
| Codex 5.3 | — | — | — | — | Available |
| Codex Mini | — | 200K | $1.50 | $6.00 | Available |