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Microsoft Foundry

Using Phi-3 Small 128K on Microsoft Foundry

Implementation guide · Phi-3 · Microsoft Research

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Microsoft Foundry exposes Phi-3 Small 128K through model ID phi-3-small-128k. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-05-19. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at Microsoft Foundry and generate an API key.
  2. 2
    Use the Microsoft Foundry SDK or REST API to call phi-3-small-128k — see the documentation for request format.
  3. 3
    You'll be billed $0.35/1M input, $1.05/1M output tokens. See full pricing.
API PortalDocumentationPricingModel Card

Code Examples

See Microsoft Foundry documentation for integration details.

Pricing on Microsoft Foundry

TypePrice (per 1M)
Input tokens$0.35
Output tokens$1.05

Capabilities

No model capability flags are currently sourced.

About Phi-3 Small 128K

Phi-3 Small 128K is Microsoft Research's Phi-3 model. It offers a 128K-token context window with weights openly available for self-hosting and scores 51.9 on GPQA.

Full model details →

Model Specs

Released2024-05-21
Parameters7B
Context128k
ArchitectureDecoder Only
Knowledge cutoff2023-10

More Models on Microsoft Foundry

Phi-3 Mini 4kPhi-3 Mini 128KPhi-3 Medium 4KPhi-3 Medium 128KPhi-3 Small 8KPhi-3 Vision
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Provider

Microsoft Foundry
Microsoft Foundry

Microsoft

Redmond, Washington, United States