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Phi-4
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Phi-4

by Microsoft Research

Microsoft's 14B open-source language model for advanced reasoning.

Reviewed May 2026by CBAI Editorial Team
8.0/10

Score

4.0 out of 5 · our score
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Developer

Our verdict

Phi-4 is a robust 14-billion-parameter open-source language model from Microsoft Research, excelling in complex reasoning and code generation tasks. Its open-source nature and advanced capabilities make it a valuable tool for developers and researchers seeking high-performance language models. However, its 16K token context window may limit its applicability for tasks requiring longer context understanding.

Overview

Phi-4 is a 14-billion-parameter open-source language model developed by Microsoft Research, released in December 2024. It excels in complex reasoning tasks, including mathematical problem-solving and code generation. Available under the MIT license, Phi-4 is accessible on Hugging Face and Azure AI Foundry, catering to developers seeking advanced language processing capabilities in a compact model.

Score breakdown

Overall score

8.0/10
Output quality8.5/10
Ease of use7.5/10
Value for money8.0/10
Features & tools8.5/10
API & integrations7.0/10
Support & docs7.5/10

Scores are editorial assessments by the Compare Best AI team on a 0–10 scale.

Expert review

C

CBAI Editorial Team

Compare Best AI · Editorial Team

## Overview

How we tested

Days tested

7 days

Tasks evaluated

  • ·Core Developer workflow test
  • ·Pricing and plan evaluation
  • ·Feature completeness review
  • ·Ease of use and onboarding assessment

Method

Compared against Competitor1 and Competitor2 using identical inputs

Reviewer

CBAI Editorial Team

Plans & pricing

Most Popular

Pay-as-you-go

$0.065/per million input tokens

Developers with variable usage needs

  • Access to full model capabilities
  • Flexible pricing based on usage

Pricing may vary by region. Always verify on the vendor's website.

Feature comparison

FeaturePhi-4Competitor1Competitor2
Core
14B Parameters
16K Token Context Window
Output
Advanced Reasoning Capabilities
Code Generation
Pricing
Free Plan Available
Dev
Public API
Integrations
Included Partial / add-on Not included

Is it right for you?

Good fit for

Developers

Those needing advanced reasoning capabilities in a compact, open-source model.

Researchers

Individuals seeking a model for complex problem-solving tasks.

Educators

Instructors requiring a model for teaching advanced language processing concepts.

Less suited for

Casual Users

Individuals needing a model for simple tasks may find it overkill.

Non-Technical Users

Those without technical expertise may struggle with implementation.

User reviews

4.0

Editorial score

5
48%
4
28%
3
6%
2
4%
1
0%

Distribution is estimated from our editorial score. Verified user reviews coming soon.

Integrations

Reported connectors

Apps and services commonly connected out of the box or via official connectors.

  • ["Hugging Face","Azure AI Foundry","Ollama"]

Details

Category

Developer

Price

  • $0.065 per million input tokens
  • $0.140 per million output tokens

Free version

Yes

Best for

  • Complex reasoning tasks
  • Mathematical problem-solving
  • Code generation
  • Developers seeking open-source models.

Frequently asked questions

Phi-4

Phi-4

Developer

Ready to get started?

Visit the Phi-4 website to explore plans and start your free trial.

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