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MicrosoftReleased May 21, 2024

Phi-3 Medium

Open Source14B parameters

Phi-3 Medium is Microsoft's entry in a crowded field. Context window: 0.128K tokens.

Context

128K

Input

Free (open)

Key Specifications

🏆

Arena Rank

Not disclosed

📐

Context Window

128K

📥

Input Price

per 1M tokens

Free (open)

📤

Output Price

per 1M tokens

Free (open)

🧠

Parameters

14B

🔓

Open Source

Yes

Best For

Balanced performancereasoningcoding

About Phi-3 Medium

Phi-3 Medium, developed by Microsoft, is a mid-size open-source model with 14 billion parameters and a 128K token context window. The model occupies the middle ground in Microsoft's Phi-3 family, offering stronger reasoning and coding capabilities than Phi-3 Mini while remaining deployable on standard enterprise GPU hardware. It benefits from the same high-quality synthetic and curated training data approach that distinguishes the Phi model line. Phi-3 Medium handles coding, analysis, summarization, and structured reasoning tasks competently. Free and open-source, it supports commercial deployment and fine-tuning without licensing costs. The model targets enterprise applications where Phi-3 Mini's capabilities are insufficient but full-scale frontier models are either too expensive or impractical to deploy. It runs on a single GPU, making it accessible for organizations with moderate compute budgets.

Pricing per 1M tokens

Input Tokens

Free (open)

Output Tokens

Free (open)

Frequently Asked Questions

What is Phi-3 Medium?
Phi-3 Medium, developed by Microsoft, is a mid-size open-source model with 14 billion parameters and a 128K token context window. The model occupies the middle ground in Microsoft's Phi-3 family, offering stronger reasoning and coding capabilities than Phi-3 Mini while remaining deployable on standard enterprise GPU hardware. It benefits from the same high-quality synthetic and curated training data approach that distinguishes the Phi model line. Phi-3 Medium handles coding, analysis, summarization, and structured reasoning tasks competently. Free and open-source, it supports commercial deployment and fine-tuning without licensing costs. The model targets enterprise applications where Phi-3 Mini's capabilities are insufficient but full-scale frontier models are either too expensive or impractical to deploy. It runs on a single GPU, making it accessible for organizations with moderate compute budgets.
How much does Phi-3 Medium cost?
Phi-3 Medium costs Free (open) per 1M input tokens and Free (open) per 1M output tokens. You pay only for what you use, which keeps costs predictable.
What is Phi-3 Medium's context window?
Phi-3 Medium has a context window of 128K tokens. This determines how much text the model can process in a single request — bigger windows mean longer documents and richer conversation history.
Is Phi-3 Medium open source?
Yes, Phi-3 Medium is open source. The model weights are publicly available, so developers can download, fine-tune, and self-host it. Open-source models give teams more control over data privacy and deployment.
What is Phi-3 Medium best for?
Phi-3 Medium is best suited for: Balanced performance, reasoning, coding. These use cases play to the model's strengths in capability, speed, and cost within Microsoft's lineup.