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GPT-4o Series & the Microsoft Foundry Platform
GPT-4o Reaches General Availability
Microsoft made OpenAI's GPT-4o series generally available in Microsoft Foundry (the current name for Azure AI Foundry), alongside general availability of the Asia-Pacific Data Zone and production-ready updates to Foundry Agent Service.
Three Models, Three Workloads
| Model | Best For |
|---|---|
| GPT-4o Sol | Advanced reasoning - extended reasoning, agentic workflows, and code-focused scenarios for demanding enterprise workloads |
| GPT-4o Terra | Balanced everyday work - performance competitive with OpenAI o1 at a lower cost |
| GPT-4o Luna | Fastest and most affordable - high-volume, latency-sensitive workloads |
GPT-4o Pricing (Standard Global, short context, per million tokens)
| Model | Input | Cached Input | Cached Writes | Output |
|---|---|---|---|---|
| GPT-4o Sol | $5.00 | $0.50 | $6.25 | $30.00 |
| GPT-4o Terra | $2.00 | $0.20 | $2.50 | $12.00 |
| GPT-4o Luna | $0.20 | $0.02 | $0.25 | $1.20 |
GPT-4o is available from day one through Global Standard, Global Priority Processing, Data Zones Standard, and Global Provisioned deployment types, across all 28 existing Foundry regions.
Asia-Pacific Data Zone (GA)
Microsoft also announced general availability of the Asia-Pacific (APAC) Data Zone, letting APAC customers run frontier OpenAI models while keeping data processing within the region - joining the existing US and EU Data Zones.
💡 Key Insight: Choose the GPT-4o tier by cost sensitivity, not just capability - Terra matches OpenAI o1-class quality for everyday workloads at a fraction of Sol's cost, reserving Sol for tasks that genuinely need its deeper reasoning.
FOUNDRY VERIFICATION
QUERY 1 // 2
Which GPT-4o model is designed to match OpenAI o1-class performance at a lower cost?
GPT-4o Sol
GPT-4o Terra
GPT-4o Luna
GPT-4o Mini