GPT 5.1 Codex
FrontierCompare pricing across 3 providers. Cheapest: Azure OpenAI at $3.44/1M tokens.
Family
openai
Context Window
272K
Max Output
128K
Arena ELO
1395
Type
chat
Provider Pricing(3 providers)
| Provider | Input/1M↑ | Output/1M | Link |
|---|---|---|---|
Azure OpenAICheapest | $1.25 | $10.00 | Use model |
OpenAICheapest | $1.25 | $10.00 | Use model |
| $1.50 | $12.00 | Use model |
Model Aliases
azure/gpt-5.1-codexus-gpt-5-1-codexus/gpt-5.1-codexeu-gpt-5-1-codexeu/gpt-5.1-codexglobal-gpt-5-1-codexglobal/gpt-5.1-codexopenai-gpt-5-1-codexOpenAI: GPT-5.1-Codexgpt-5-1-codex-2025-11-13gpt-5.1-codex-2025-11-13
Frequently Asked Questions
The cheapest provider for GPT 5.1 Codex is currently Azure OpenAI at $3.4375 per million tokens (blended rate). Prices are verified every 6 hours. Check the provider comparison table below for all available options.
Prices in USD per 1M tokens. Updated every 6 hours.