Past PyTorch Lightning versions
===============================

PyTorch Lightning :doc:`evolved over time <versioning>`. Here's the history of versions with links to their respective docs.

To help you with keeping up to speed, check :doc:`Migration guide <upgrade/migration_guide>`.

.. list-table:: Past versions
   :widths: 5 50 30 15
   :header-rows: 1

   * - Version
     - Title
     - Bug-fix versions
     - Upgrade guide

   * - `1.9 <https://github.com/Lightning-AI/lightning/releases/tag/1.9.0>`_
     - `Stability and additional improvements <https://lightning.ai/docs/pytorch/1.9.3>`_
     - `1.9.0 <https://lightning.ai/docs/pytorch/1.9.0>`_,
       `1.9.1 <https://lightning.ai/docs/pytorch/1.9.1>`_,
       `1.9.2 <https://lightning.ai/docs/pytorch/1.9.2>`_,
       `1.9.3 <https://lightning.ai/docs/pytorch/1.9.3>`_,
       `1.9.4 <https://lightning.ai/docs/pytorch/1.9.4>`_,
       `1.9.5 <https://lightning.ai/docs/pytorch/1.9.5>`_
     - :doc:`from 1.9 to 2.0 <upgrade/from_1_9>`

   * - `1.8 <https://github.com/Lightning-AI/lightning/releases/tag/1.8.0>`_
     - `Colossal-AI Strategy, Commands and Secrets for Apps, FSDP Improvements and More! <https://lightning.ai/docs/pytorch/1.8.6>`_
     - `1.8.0 <https://lightning.ai/docs/pytorch/1.8.0>`_,
       `1.8.1 <https://lightning.ai/docs/pytorch/1.8.1>`_,
       `1.8.2 <https://lightning.ai/docs/pytorch/1.8.2>`_,
       `1.8.3 <https://lightning.ai/docs/pytorch/1.8.3>`_,
       `1.8.4 <https://lightning.ai/docs/pytorch/1.8.4>`_,
       `1.8.5 <https://lightning.ai/docs/pytorch/1.8.5>`_,
       `1.8.6 <https://lightning.ai/docs/pytorch/1.8.6>`_
     - :doc:`from 1.8 to 2.0 <upgrade/from_1_8>`

   * - `1.7 <https://github.com/Lightning-AI/lightning/releases/tag/1.7.0>`_
     - `Apple Silicon support, Native FSDP, Collaborative training, and multi-GPU support with Jupyter notebooks <https://lightning.ai/docs/pytorch/1.7.7>`_
     - `1.7.0 <https://lightning.ai/docs/pytorch/1.7.0>`_,
       `1.7.1 <https://lightning.ai/docs/pytorch/1.7.1>`_,
       `1.7.2 <https://lightning.ai/docs/pytorch/1.7.2>`_,
       `1.7.3 <https://lightning.ai/docs/pytorch/1.7.3>`_,
       `1.7.4 <https://lightning.ai/docs/pytorch/1.7.4>`_,
       `1.7.5 <https://lightning.ai/docs/pytorch/1.7.5>`_,
       `1.7.6 <https://lightning.ai/docs/pytorch/1.7.6>`_,
       `1.7.7 <https://lightning.ai/docs/pytorch/1.7.7>`_
     - :doc:`from 1.7 to 2.0 <upgrade/from_1_7>`

   * - `1.6 <https://github.com/Lightning-AI/lightning/releases/tag/1.6.0>`_
     - `Support Intel's Habana Accelerator, New efficient DDP strategy (Bagua), Manual Fault-tolerance, Stability and Reliability <https://lightning.ai/docs/pytorch/1.6.5>`_
     - `1.6.0 <https://lightning.ai/docs/pytorch/1.6.0>`_,
       `1.6.1 <https://lightning.ai/docs/pytorch/1.6.1>`_,
       `1.6.2 <https://lightning.ai/docs/pytorch/1.6.2>`_,
       `1.6.3 <https://lightning.ai/docs/pytorch/1.6.3>`_,
       `1.6.4 <https://lightning.ai/docs/pytorch/1.6.4>`_,
       `1.6.5 <https://lightning.ai/docs/pytorch/1.6.5>`_
     - :doc:`from 1.6 to 2.0 <upgrade/from_1_6>`

   * - `1.5 <https://github.com/Lightning-AI/lightning/releases/tag/1.5.0>`_
     - `LightningLite, Fault-Tolerant Training, Loop Customization, Lightning Tutorials, LightningCLI v2, RichProgressBar, CheckpointIO Plugin, and Trainer Strategy Flag <https://lightning.ai/docs/pytorch/1.5.10>`_
     - `1.5.0 <https://lightning.ai/docs/pytorch/1.5.0>`_,
       `1.5.1 <https://lightning.ai/docs/pytorch/1.5.1>`_,
       `1.5.2 <https://lightning.ai/docs/pytorch/1.5.2>`_,
       `1.5.3 <https://lightning.ai/docs/pytorch/1.5.3>`_,
       `1.5.4 <https://lightning.ai/docs/pytorch/1.5.4>`_,
       `1.5.5 <https://lightning.ai/docs/pytorch/1.5.5>`_,
       `1.5.6 <https://lightning.ai/docs/pytorch/1.5.6>`_,
       `1.5.7 <https://lightning.ai/docs/pytorch/1.5.7>`_,
       `1.5.8 <https://lightning.ai/docs/pytorch/1.5.8>`_,
       `1.5.9 <https://lightning.ai/docs/pytorch/1.5.9>`_,
       `1.5.10 <https://lightning.ai/docs/pytorch/1.5.10>`_
     - :doc:`from 1.5 to 2.0 <upgrade/from_1_5>`

   * - `1.4 <https://github.com/Lightning-AI/lightning/releases/tag/1.4.0>`_
     - `TPU Pod Training, IPU Accelerator, DeepSpeed Infinity, Fully Sharded Data Parallel <https://lightning.ai/docs/pytorch/1.4.9>`_
     - `1.4.0 <https://lightning.ai/docs/pytorch/1.4.0>`_,
       `1.4.1 <https://lightning.ai/docs/pytorch/1.4.1>`_,
       `1.4.2 <https://lightning.ai/docs/pytorch/1.4.2>`_,
       `1.4.3 <https://lightning.ai/docs/pytorch/1.4.3>`_,
       `1.4.4 <https://lightning.ai/docs/pytorch/1.4.4>`_,
       `1.4.5 <https://lightning.ai/docs/pytorch/1.4.5>`_,
       `1.4.6 <https://lightning.ai/docs/pytorch/1.4.6>`_,
       `1.4.7 <https://lightning.ai/docs/pytorch/1.4.7>`_,
       `1.4.8 <https://lightning.ai/docs/pytorch/1.4.8>`_,
       `1.4.9 <https://lightning.ai/docs/pytorch/1.4.9>`_
     - :doc:`from 1.4 to 2.0 <upgrade/from_1_4>`

   * - `1.3 <https://github.com/Lightning-AI/lightning/releases/tag/1.3.0>`_
     - `Lightning CLI, PyTorch Profiler, Improved Early Stopping <https://pytorch-lightning.readthedocs.io/en/1.3.8>`_
     - `1.3.0 <https://pytorch-lightning.readthedocs.io/en/1.3.0>`_,
       `1.3.1 <https://pytorch-lightning.readthedocs.io/en/1.3.1>`_,
       `1.3.2 <https://pytorch-lightning.readthedocs.io/en/1.3.2>`_,
       `1.3.3 <https://pytorch-lightning.readthedocs.io/en/1.3.3>`_,
       `1.3.4 <https://pytorch-lightning.readthedocs.io/en/1.3.4>`_,
       `1.3.5 <https://pytorch-lightning.readthedocs.io/en/1.3.5>`_,
       `1.3.6 <https://pytorch-lightning.readthedocs.io/en/1.3.6>`_,
       `1.3.7 <https://pytorch-lightning.readthedocs.io/en/1.3.7>`_,
       `1.3.8 <https://pytorch-lightning.readthedocs.io/en/1.3.8>`_
     -

   * - `1.2 <https://github.com/Lightning-AI/lightning/releases/tag/1.2.0>`_
     - `Pruning & Quantization & SWA <https://pytorch-lightning.readthedocs.io/en/1.2.10>`_
     - `1.2.0 <https://pytorch-lightning.readthedocs.io/en/1.2.0>`_,
       `1.2.1 <https://pytorch-lightning.readthedocs.io/en/1.2.1>`_,
       `1.2.2 <https://pytorch-lightning.readthedocs.io/en/1.2.2>`_,
       `1.2.3 <https://pytorch-lightning.readthedocs.io/en/1.2.3>`_,
       `1.2.4 <https://pytorch-lightning.readthedocs.io/en/1.2.4>`_,
       `1.2.5 <https://pytorch-lightning.readthedocs.io/en/1.2.5>`_,
       `1.2.6 <https://pytorch-lightning.readthedocs.io/en/1.2.6>`_,
       `1.2.7 <https://pytorch-lightning.readthedocs.io/en/1.2.7>`_,
       `1.2.8 <https://pytorch-lightning.readthedocs.io/en/1.2.8>`_,
       1.2.9,
       `1.2.10 <https://pytorch-lightning.readthedocs.io/en/1.2.10>`_
     -

   * - `1.1 <https://github.com/Lightning-AI/lightning/releases/tag/1.1.0>`_
     - `Model Parallelism Training and More Logging Options <https://pytorch-lightning.readthedocs.io/en/1.1.8>`_
     - `1.1.0 <https://pytorch-lightning.readthedocs.io/en/1.1.0>`_,
       `1.1.1 <https://pytorch-lightning.readthedocs.io/en/1.1.1>`_,
       `1.1.2 <https://pytorch-lightning.readthedocs.io/en/1.1.2>`_,
       `1.1.3 <https://pytorch-lightning.readthedocs.io/en/1.1.3>`_,
       `1.1.4 <https://pytorch-lightning.readthedocs.io/en/1.1.4>`_,
       `1.1.5 <https://pytorch-lightning.readthedocs.io/en/1.1.5>`_,
       `1.1.6 <https://pytorch-lightning.readthedocs.io/en/1.1.6>`_,
       `1.1.7 <https://pytorch-lightning.readthedocs.io/en/1.1.7>`_,
       `1.1.8 <https://pytorch-lightning.readthedocs.io/en/1.1.8>`_
     -

   * - `1.0 <https://github.com/Lightning-AI/lightning/releases/tag/1.0.0>`_
     - `General availability <https://pytorch-lightning.readthedocs.io/en/1.0.8>`_
     - `1.0.0 <https://pytorch-lightning.readthedocs.io/en/1.0.0>`_,
       `1.0.1 <https://pytorch-lightning.readthedocs.io/en/1.0.1>`_,
       `1.0.2 <https://pytorch-lightning.readthedocs.io/en/1.0.2>`_,
       `1.0.3 <https://pytorch-lightning.readthedocs.io/en/1.0.3>`_,
       `1.0.4 <https://pytorch-lightning.readthedocs.io/en/1.0.4>`_,
       `1.0.5 <https://pytorch-lightning.readthedocs.io/en/1.0.5>`_,
       `1.0.6 <https://pytorch-lightning.readthedocs.io/en/1.0.6>`_,
       `1.0.7 <https://pytorch-lightning.readthedocs.io/en/1.0.7>`_,
       `1.0.8 <https://pytorch-lightning.readthedocs.io/en/1.0.8>`_
     -