Model reference · open weights
Phi-3.5-mini is an open-weight language model from microsoft. Phi-3.5-mini-instruct (BF16) weighs 7.6 GB; the smallest configuration that runs it is RTX 3060 12 GB.
Summary of the microsoft/Phi-3.5-mini-instruct model card, 2026-10-01
What it is
| Released by | microsoft |
|---|---|
| Released | 2024-08-16 |
| Parameters | 3.8B |
| VRAM | 7.6 GB for the weights |
What it runs on
| Card | Requests at once | Context max | Memory | |
|---|---|---|---|---|
| 8K each | 32K each | |||
| RTX 3060 12 GB | 1 | — | 8K | 11.6 GB |
| RTX 4060 Ti 16 GB | 2 | — | 17K | 15.4 GB |
| RTX 3090 24 GB | 4 | 1 | 37K | 23.4 GB |
| RTX 4090 24 GB | 4 | 1 | 37K | 23.4 GB |
| RTX 5090 32 GB | 7 | 1 | 56K | 31.0 GB |
| L40S 48 GB | 11 | 2 | 88K | 44.0 GB |
| A100 80 GB | 21 | 5 | all 128K | 78.2 GB |
| H100 80 GB | 20 | 5 | all 128K | 78.1 GB |
| RTX PRO 6000 Blackwell 96 GB | 25 | 6 | all 128K | 93.8 GB |
| DGX Spark (GB10) 128 GB unified | 29 | 7 | all 128K | 107 GB |
| H200 141 GB | 39 | 9 | all 128K | 138 GB |
| B200 180 GB | 51 | 12 | all 128K | 176 GB |
| 2× RTX 3060 12 GB tensor parallel | 4 | 1 | 35K | 11.6 GB a card |
| 2× RTX 4060 Ti 16 GB tensor parallel | 6 | 1 | 54K | 15.4 GB a card |
| 2× RTX 4090 24 GB tensor parallel | 11 | 2 | 94K | 23.4 GB a card |
| 2× RTX 3090 24 GB tensor parallel | 11 | 2 | 94K | 23.4 GB a card |
| 2× RTX 5090 32 GB tensor parallel | 16 | 4 | all 128K | 31.0 GB a card |
| Requests at once | 8K tokens each | 32K tokens each |
|---|---|---|
| 1 | 11.4 GB | 21.1 GB |
| 5 | 24.3 GB | 72.6 GB |
| 8 | 34.0 GB | 111 GB |
| 16 | 59.8 GB | 214 GB |
| 32 | 111 GB | 421 GB |
| 64 | 214 GB | 833 GB |
One card, with vLLM's small-card settings.
From the model card
🎉Phi-4: [multimodal-instruct | onnx]; [mini-instruct | onnx]
Phi-3.5-mini is a lightweight, state-of-the-art open model built upon datasets used for Phi-3 - synthetic data and filtered publicly available websites - with a focus on very high-quality, reasoning dense data. The model belongs to the Phi-3 model family and supports 128K token context length. The model underwent a rigorous enhancement process, incorporating both supervised fine-tuning, proximal policy optimization, and direct preference optimization to ensure precise instruction adherence and robust safety measures.
🏡 Phi-3 Portal 📰 Phi-3 Microsoft Blog 📖 Phi-3 Technical Report 👩🍳 Phi-3 Cookbook 🖥️ Try It
Phi-3.5: [mini-instruct | onnx]; [MoE-instruct]; [vision-instruct]
The model is intended for commercial and research use in multiple languages. The model provides uses for general purpose AI systems and applications which require:
Our model is designed to accelerate research on language and multimodal models, for use as a building block for generative AI powered features.
Our models are not specifically designed or evaluated for all downstream purposes. Developers should consider common limitations of language models as they select use cases, and evaluate and mitigate for accuracy, safety, and fariness before using within a specific downstream use case, particularly for high risk scenarios. Developers should be aware of and adhere to applicable laws or regulations (including privacy, trade compliance laws, etc.) that are relevant to their use case.
Nothing contained in this Model Card should be interpreted as or deemed a restriction or modification to the license the model is released under.
This is an update over the June 2024 instruction-tuned Phi-3 Mini release based on valuable user feedback. The model used additional post-training data leading to substantial gains on multilingual, multi-turn conversation quality, and reasoning capability. We believe most use cases will benefit from this release, but we encourage users to test in their particular AI applications. We appreciate the enthusiastic adoption of the Phi-3 model family, and continue to welcome all feedback from the community.
The table below highlights multilingual capability of the Phi-3.5 Mini on multilingual MMLU, MEGA, and multilingual MMLU-pro datasets. Overall, we observed that even with just 3.8B active parameters, the model is competitive on multilingual tasks in comparison to other models with a much bigger active parameters.
| Benchmark | Phi-3.5 Mini-Ins | Phi-3.0-Mini-128k-Instruct (June2024) | Mistral-7B-Instruct-v0.3 | Mistral-Nemo-12B-Ins-2407 | Llama-3.1-8B-Ins | Gemma-2-9B-Ins | Gemini 1.5 Flash | GPT-4o-mini-2024-07-18 (Chat) |
|---|---|---|---|---|---|---|---|---|
| Multilingual MMLU | 55.4 | 51.08 | 47.4 | 58.9 | 56.2 | 63.8 | 77.2 | 72.9 |
| Multilingual MMLU-Pro | 30.9 | 30.21 | 15.0 | 34.0 | 21.4 | 43.0 | 57.9 | 53.2 |
| MGSM | 47.9 | 41.56 | 31.8 | 63.3 | 56.7 | 75.1 | 75.8 | 81.7 |
| MEGA MLQA | 61.7 | 55.5 | 43.9 | 61.2 | 45.2 | 54.4 | 61.6 | 70.0 |
| MEGA TyDi QA | 62.2 | 55.9 | 54.0 | 63.7 | 54.5 | 65.6 | 63.6 | 81.8 |
| MEGA UDPOS | 46.5 | 48.1 | 57.2 | 58.2 | 54.1 | 56.6 | 62.4 | 66.0 |
| MEGA XCOPA | 63.1 | 62.4 | 58.8 | 10.8 | 21.1 | 31.2 | 95.0 | 90.3 |
| MEGA XStoryCloze | 73.5 | 73.6 | 75.5 | 92.3 | 71.0 | 87.0 | 20.7 | 96.6 |
| Average | 55.2 | 52.3 | 47.9 | 55.3 | 47.5 | 59.6 | 64.3 | 76.6 |
The table below shows Multilingual MMLU scores in some of the supported languages. For more multi-lingual benchmarks and details, see Appendix A.
| Benchmark | Phi-3.5 Mini-Ins | Phi-3.0-Mini-128k-Instruct (June2024) | Mistral-7B-Instruct-
Quoted from the model card on Hugging Face. The full card is behind the Hugging Face link above.