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Phi-1

Available · Language, Code · Milestone

Phi-1 is a 1.3 billion parameter Transformer language model from Microsoft, specialised for basic Python coding and introduced in the paper Textbooks Are All You Need in June 2023. It was trained on textbook-quality web data plus synthetic textbooks and exercises generated with GPT-3.5, and its weights are published on Hugging Face under the MIT License. [1] [2] Primary source

Timeline of Phi-1 →

Claims and evidence

  • Announced Primary source[1]Submission history, v1
  • ReleasedRelease date unknown
  • Status AvailableWeights are still downloadable from Microsoft's Hugging Face organisation (checked 2026-10-01). Primary source[2]
      • Input textPrompts in code format. Primary source[2]Intended Uses
      • Output text Primary source[2]Intended Uses; Sample Code
      • Open weights Yes Primary source[2]License
      • Parameters 1.3B Primary source[1]abstract [2]Model Summary
      • Access Open-weights download Primary source[2]

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