Phi-2

Claims and evidence

• Announced 15 November 2023 ● Primary source[1]transcript header; Phi 2 announcement [2]Figure 1 caption
• Released 12 December 2023 ● Primary source[2]page date; availability in the Azure AI Studio model catalog

• Status AvailableWeights are still downloadable from Microsoft's Hugging Face organisation (checked 2026-10-01). ● Primary source[3]

• Successor of Phi-1.5Nadella calls Phi 2 a scaled-up version of Phi 1.5; the blog describes embedding Phi-1.5 knowledge in Phi-2. ● Primary source[1]Phi 2 announcement [2]Key Insights Behind Phi-2 [3]Model Summary

• Change · Size Grows from 1.3 billion parameters in Phi-1.5 to 2.7 billion.Compared with Phi-1.5 ● Primary source[1] [3]
• Change · Training data Adds new synthetic NLP texts and websites filtered for safety and educational value to the Phi-1.5 data sources.Compared with Phi-1.5 ● Primary source[3]
• Change · Other Microsoft says embedding the knowledge of Phi-1.5 in the larger model, a scaled knowledge transfer, sped up training convergence.Compared with Phi-1.5 ● Primary source[2]

• Input text ● Primary source[3]Intended Uses
• Output text ● Primary source[3]Intended Uses
• Open weights Yes ● Primary source[3]License
• Context window 2048 tokens tokens ● Primary source[3]Training, Model
• Parameters 2.7 billion ● Primary source[2] [3]Model Summary
• Access Open-weights download ● Primary source[3]

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Variants

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