--- title: Past PyTorch Lightning versions description: >- PyTorch Lightning evolved over time. Here's the history of versions with links to their respective docs. canonical: 'https://lightning.ai/docs/pytorch/stable/reference/past_versions' --- # Past PyTorch Lightning versions {#past-pytorch-lightning-versions} PyTorch Lightning [evolved over time](/docs/pytorch/2.6.6/reference/versioning.md). Here's the history of versions with links to their respective docs. To help you with keeping up to speed, check [Migration guide](/docs/pytorch/2.6.6/home/migration_guide.md). | Version | Title | Bug-fix versions | Upgrade guide | | --- | --- | --- | --- | | [1.9](https://github.com/Lightning-AI/lightning/releases/tag/1.9.0) | [Stability and additional improvements](/docs/pytorch/1.9.3) | [1.9.0](/docs/pytorch/1.9.0), [1.9.1](/docs/pytorch/1.9.1), [1.9.2](/docs/pytorch/1.9.2), [1.9.3](/docs/pytorch/1.9.3), [1.9.4](/docs/pytorch/1.9.4), [1.9.5](/docs/pytorch/1.9.5) | [from 1.9 to 2.0](/docs/pytorch/2.6.6/home/migration_guide/from_1_9.md) | | [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!](/docs/pytorch/1.8.6) | [1.8.0](/docs/pytorch/1.8.0), [1.8.1](/docs/pytorch/1.8.1), [1.8.2](/docs/pytorch/1.8.2), [1.8.3](/docs/pytorch/1.8.3), [1.8.4](/docs/pytorch/1.8.4), [1.8.5](/docs/pytorch/1.8.5), [1.8.6](/docs/pytorch/1.8.6) | [from 1.8 to 2.0](/docs/pytorch/2.6.6/home/migration_guide/from_1_8.md) | | [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](/docs/pytorch/1.7.7) | [1.7.0](/docs/pytorch/1.7.0), [1.7.1](/docs/pytorch/1.7.1), [1.7.2](/docs/pytorch/1.7.2), [1.7.3](/docs/pytorch/1.7.3), [1.7.4](/docs/pytorch/1.7.4), [1.7.5](/docs/pytorch/1.7.5), [1.7.6](/docs/pytorch/1.7.6), [1.7.7](/docs/pytorch/1.7.7) | [from 1.7 to 2.0](/docs/pytorch/2.6.6/home/migration_guide/from_1_7.md) | | [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](/docs/pytorch/1.6.5) | [1.6.0](/docs/pytorch/1.6.0), [1.6.1](/docs/pytorch/1.6.1), [1.6.2](/docs/pytorch/1.6.2), [1.6.3](/docs/pytorch/1.6.3), [1.6.4](/docs/pytorch/1.6.4), [1.6.5](/docs/pytorch/1.6.5) | [from 1.6 to 2.0](/docs/pytorch/2.6.6/home/migration_guide/from_1_6.md) | | [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](/docs/pytorch/1.5.10) | [1.5.0](/docs/pytorch/1.5.0), [1.5.1](/docs/pytorch/1.5.1), [1.5.2](/docs/pytorch/1.5.2), [1.5.3](/docs/pytorch/1.5.3), [1.5.4](/docs/pytorch/1.5.4), [1.5.5](/docs/pytorch/1.5.5), [1.5.6](/docs/pytorch/1.5.6), [1.5.7](/docs/pytorch/1.5.7), [1.5.8](/docs/pytorch/1.5.8), [1.5.9](/docs/pytorch/1.5.9), [1.5.10](/docs/pytorch/1.5.10) | [from 1.5 to 2.0](/docs/pytorch/2.6.6/home/migration_guide/from_1_5.md) | | [1.4](https://github.com/Lightning-AI/lightning/releases/tag/1.4.0) | [TPU Pod Training, IPU Accelerator, DeepSpeed Infinity, Fully Sharded Data Parallel](/docs/pytorch/1.4.9) | [1.4.0](/docs/pytorch/1.4.0), [1.4.1](/docs/pytorch/1.4.1), [1.4.2](/docs/pytorch/1.4.2), [1.4.3](/docs/pytorch/1.4.3), [1.4.4](/docs/pytorch/1.4.4), [1.4.5](/docs/pytorch/1.4.5), [1.4.6](/docs/pytorch/1.4.6), [1.4.7](/docs/pytorch/1.4.7), [1.4.8](/docs/pytorch/1.4.8), [1.4.9](/docs/pytorch/1.4.9) | [from 1.4 to 2.0](/docs/pytorch/2.6.6/home/migration_guide/from_1_4.md) | | [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) | | --- **Navigation** - Parent: [Reference](/docs/pytorch/2.6.6/reference.md)