phi 1 5

Name: phi 1 5
Author: Microsoft

by MicrosoftPhi

Open WeightModel weights are publicly available — can be downloaded and self-hosted

Released September 20232K context≈ 1,536 words1.4B params

Phi-1.5 punches well above its weight class for a 1.4B parameter model, showing surprisingly capable reasoning and coding ability that rivals much larger models on structured tasks. It was trained on carefully curated 'textbook quality' data rather than raw web crawls, which gives it a clean, methodical reasoning style. However, its small size means it struggles with broad world knowledge and can feel narrow outside its training distribution.

Capabilities

Capability scores are AI-generated based on model documentation, benchmarks, and technical specifications. Learn more

Coding

Moderate

Creative Writing

phi 1 5

by MicrosoftPhi

Open WeightModel weights are publicly available — can be downloaded and self-hosted

Released September 20232K context≈ 1,536 words1.4B params

Phi-1.5 punches well above its weight class for a 1.4B parameter model, showing surprisingly capable reasoning and coding ability that rivals much larger models on structured tasks. It was trained on carefully curated 'textbook quality' data rather than raw web crawls, which gives it a clean, methodical reasoning style. However, its small size means it struggles with broad world knowledge and can feel narrow outside its training distribution.

Capabilities

Capability scores are AI-generated based on model documentation, benchmarks, and technical specifications. Learn more

Coding

Moderate

Creative Writing

Glossary

Parameter ModelA neural network described by the number of learnable weights it contains; more parameters generally mean greater capacity to learn complex patterns, but also require more computational resources.ReasoningThe model's ability to work through multi-step logical problems and provide justified answers rather than just pattern-matching.Training DistributionThe range of topics, styles, and types of text a model was trained on; the model performs best on content similar to this distribution and may struggle outside it.World KnowledgeA model's learned understanding of facts, concepts, and relationships about the real world, typically acquired during training on diverse text data.

phi 1 5

Capabilities

phi 1 5

Capabilities

Benchmark Scores

Use Case Fit

Glossary