What are the key differences between Phi-4 and Phi-3.5?

Compare Phi-4 and Phi-3.5 side by side on Lunoo to see detailed feature differences, AI scores, and expert analysis.

How are Phi-4 and Phi-3.5 scored?

Phi-4 has an AI score of 8.3/10 and Phi-3.5 has an AI score of 8.0/10. Scores are based on category fit, feature coverage, pricing signals, public reception, and recency.

Phi-4 vs Phi-3.5 2026 - Compared

Phi-4

Phi-3.5

WINNER Phi-4

Phi-4 edges ahead with a score of 8.3/10 compared to 8.0/10 for Phi-3.5. While both are highly rated in their respective...

emoji_events WINNER

Phi-4 edges ahead with a score of 8.3/10 compared to 8.0/10 for Phi-3.5. While both are highly rated in their respective fields, Phi-4 demonstrates a slight advantage in our AI ranking criteria. A detailed AI-powered analysis is being prepared for this comparison.

emoji_events Winner: Phi-4

verified Confidence: Low

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description Overview

Phi-4

Phi-4 is a 14-billion-parameter language model introduced by Microsoft in late 2024 as part of the Phi family of small language models. Its development emphasized carefully selected synthetic and curated training data, with evaluations focused particularly on mathematical reasoning and other tasks requiring structured problem solving. It is intended for research and applications where a comparativ...

Phi-3.5

Phi-3.5 is a family of compact artificial intelligence models introduced by Microsoft in 2024. The family includes Phi-3.5-mini-instruct, a 3.8-billion-parameter language model, as well as mixture-of-experts and vision variants designed for different text and image-processing tasks. These models emphasize capable reasoning, multilingual use, and deployment efficiency at smaller scales, making them...