Microsoft Foundry Prompt Optimizer

Spec sheet

Purpose

Prompt Optimizer automatically improves an agent’s system instructions using prompt-engineering best practices.Read 4 Oct 2026 · learn.microsoft.com

Headquarters

Redmond, Washington, United StatesRead 4 Oct 2026 · learn.microsoft.com

Founded

1975Read 4 Oct 2026 · learn.microsoft.com

Maker

Microsoft’s corporate headquarters are in Redmond, Washington.Read 4 Oct 2026 · news.microsoft.com

Access

The optimizer is available in the Foundry portal’s agent configuration and in the model playground wherever a system-instructions field is present.Read 4 Oct 2026 · learn.microsoft.com

How it works

An LLM uses the supplied instructions and optional suggestions to restructure and clarify the prompt.Read 4 Oct 2026 · learn.microsoft.com

Iteration

Users can add suggestions and reoptimize, using the latest optimized text as the next baseline.Read 4 Oct 2026 · learn.microsoft.com

Limits

It optimizes text-based agent instructions and does not optimize non-text configuration such as tool definitions or knowledge sources.Read 4 Oct 2026 · learn.microsoft.com

Persistence

Optimization results are not stored permanently, and the optimizer does not automatically save previous instruction versions.Read 4 Oct 2026 · learn.microsoft.com

Prerequisites

Use requires a Foundry project with a prompt or workflow agent, a model deployment in a supported region, and access to the agent configuration panel.Read 4 Oct 2026 · learn.microsoft.com

Preview status

The feature is in public preview, without a service-level agreement, and Microsoft does not recommend it for production workloads.Read 4 Oct 2026 · learn.microsoft.com

Reasoning

It provides an explanation for each modified paragraph that users can review alongside the revised text.Read 4 Oct 2026 · learn.microsoft.com

Regions

Supported project regions listed include Central US, East US 2, France Central, Germany West Central, Italy North, Japan West, North Central US, Poland Central, Spain Central, Sweden Central, Switzerland West, UAE North, West US, West US 2, and West US 3.Read 4 Oct 2026 · learn.microsoft.com

Related optimization

The separate Agent Optimizer can generate candidates for prompt-agent instructions, function-calling tool descriptions, or model selection.Read 4 Oct 2026 · learn.microsoft.com

Security and privacy

Microsoft states that prompts and completions for Models sold by Azure are not shared with other customers or used by model providers to improve their models or services.Read 4 Oct 2026 · learn.microsoft.com

Where Specifiction places it

• AI Prompt Generators#24 of 286.8