AI Index

GPT-5.1-codex-mini

Language OpenAI Partly verified Retired Shut down Jul 23, 2026 Released Nov 13, 2025
Model ID
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Context
400K
128K max output
Input price
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Not listed
Output price
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Not listed
Epoch Capabilities Index
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Not listed
LMArena Text
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Where to run it

2 offerings · prices as listed
MeterTierPrice
OpenAI API Official Retired Global · USD gpt-5.1-codex-mini
InputStandard past price, from the vendor’s page archived Feb 7, 2026$0.25 / 1M tokens
OutputStandard past price, from the vendor’s page archived Feb 7, 2026$2.00 / 1M tokens
Cache readStandard past price, from the vendor’s page archived Feb 7, 2026$0.025 / 1M tokens
Azure OpenAI in Foundry Shuts down May 15, 2027 Global · USD gpt-5.1-codex-mini
InputStandard $0.25 / 1M tokens
OutputStandard $2.00 / 1M tokens
Cache readStandard $0.030 / 1M tokens

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