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Ms Swift

Ms Swift is a Python-based, Apache-2.0 framework for training and fine-tuning large language and multimodal language models with PEFT or full-parameter methods.

Independent OpenViST project profile, based on linked sources.

Ms Swift — OpenViST project profile in AI Developer Tools & SDKs.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use Ms Swift when you need a self-hosted framework for adapting a supported model and want both lightweight PEFT and full-parameter training options across supervised, preference or reinforcement-learning tasks.

Who it is for

  • AI developers adapting supported ModelScope language models.
  • Teams training multimodal models on text, image, video or audio data.
  • Researchers experimenting with supervised, preference and reinforcement-learning methods.

Documented uses

  • Fine-tune a model for a domain-specific assistant.
  • Train a multimodal model for a specialized vision-language task.
  • Apply continual pretraining to supported domain text.
  • Build DPO or GRPO-based training workflows.
  • Use documented inference, evaluation, quantization and deployment components around a trained model.
Before you choose

Requirements & limits

The project repository is publicly accessible, open source and licensed under Apache-2.0. It documents Linux, Windows, macOS, CLI, Docker, self-hosted and server environments.

  • Model coverage: the repository describes support for more than 600 text-only and 400 multimodal models, but the selected model family still needs to be checked.
  • Training method: PEFT reduces the scope of parameter updates compared with full-parameter training, while CPT, SFT, DPO and GRPO serve different adaptation goals.
  • Modality: the framework documents text, image, video and audio training workflows, making dataset structure a key design consideration.
  • Infrastructure: documented options include CUDA, ROCm, Apple MPS, CPU, distributed training and several memory-optimization techniques.
  • Pipeline scope: Ms Swift covers training alongside documented inference, evaluation, quantization and deployment components, rather than only a single fine-tuning method.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Prepare a supported model for task-specific training

Set up the documented stages for adapting a supported ModelScope language or multimodal model.

Before you start

  • A supported ModelScope model family.
  • A prepared dataset for the intended training task.
  • Python 3.12, PyTorch 2.0 or later, and ModelScope 1.23 or later, as shown in the repository badges.
  • A supported execution environment such as Linux, Windows, macOS, CUDA, ROCm, Apple MPS or CPU.

Steps

  1. Select a supported language or multimodal model family from ModelScope.

  2. Prepare the dataset for the intended domain or task.

  3. Choose PEFT or full-parameter training.

  4. Select a documented task such as continual pretraining, supervised fine-tuning, DPO or GRPO.

Expected outcome

A configured training path for adapting the selected supported model to the chosen task.

Guide limitations

  • The available project description does not provide model-specific hardware, configuration or execution details.
  • Actual support depends on the selected model family and training method.
Evidence and transparency

Sources & review

Source record details
Source availability
Active
Sources checked
2 October 2026
Original website title
modelscope/ms-swift · Official homepage title · retained in its source language