Software · head to head
TensorFlow vs Keras
The short version
- Each has a real cost: TensorFlow pyTorch dominates NLP research ecosystem with Hugging Face Transformers starting as PyTorch-only; Keras limited customization compared to TensorFlow; advanced users may find constraints in complex model designs
- They diverge on capability: TensorFlow covers Deep learning framework, Keras covers Sequential and Functional API.
Where they differ
Only the attributes on which TensorFlow and Keras actually diverge.
| Attribute | TensorFlow | Keras |
|---|---|---|
| Pricing model | Unknown | open-source |
| Platforms | Python, JavaScript, C++, Java, Go, Rust | Python, Google Colab, Jupyter |
| Founded | 1998 | 2015 |
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in TensorFlow
- Deep learning framework
- Neural network training
- Model deployment
- TensorBoard visualization
- Distributed training
- Keras
- TensorFlow Lite
- TensorFlow.js
Only in Keras
- Sequential and Functional API
- Pre-built neural network layers
- Model training and evaluation
- Transfer learning
- Model serialization
- TensorFlow
- JAX
- PyTorch
Both cover
- Linux support
- Mac support
- Windows support
What people use each for
The jobs each tool is most often brought in to do.
TensorFlow
- Machine learning
- Data analysis
- Model training
- Predictive analytics
Keras
- Machine learning
- Data analysis
- Model training
- Predictive analytics
Both are used for machine learning, data analysis, model training, predictive analytics, on those jobs the choice comes down to price and fit rather than capability.
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
TensorFlow
- PyTorch dominates NLP research ecosystem with Hugging Face Transformers starting as PyTorch-only
- Broader ecosystem is more complex to navigate for new users compared to PyTorch's more Pythonic API
- Performance advantage over PyTorch exists mainly at very large scale with TPUs, not for most workloads
Keras
- Limited customization compared to TensorFlow; advanced users may find constraints in complex model designs
- Error messages can be vague and unhelpful, making debugging challenging
- Smaller ecosystem and fewer pre-trained models than TensorFlow or PyTorch
Pricing, plan by plan
TensorFlow
FreeNo published plan breakdown. See the TensorFlow review.
Keras
Free- Open SourceFree
- High-level API
- Pre-built layers
- Model serialization
Which should you pick?
Choose TensorFlow if
- You need deep learning framework.
- You want to start without paying.
- You work on Python, JavaScript, C++, Java, Go, Rust.
- You also want neural network training.
Choose Keras if
- You need sequential and functional api.
- You want to start without paying.
- You work on Python, Google Colab, Jupyter.
- You also want pre-built neural network layers.
Questions people ask
- Is TensorFlow or Keras better?
- Neither clearly leads. TensorFlow starts at Free and Keras at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, TensorFlow or Keras?
- TensorFlow starts at Free and Keras at Free.
- Does TensorFlow or Keras run on more platforms?
- TensorFlow runs on Python, JavaScript, C++, Java, Go, Rust. Keras runs on Python, Google Colab, Jupyter.
- Can I use TensorFlow for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is TensorFlow best used for?
- TensorFlow is most often used for machine learning, data analysis, model training, predictive analytics.
- What can TensorFlow do that Keras cannot?
- TensorFlow covers Deep learning framework, Neural network training, Model deployment, TensorBoard visualization. Keras covers Sequential and Functional API, Pre-built neural network layers, Model training and evaluation, Transfer learning. Both handle Linux support, Mac support, Windows support.
Answered from the vendors’ own pages
TensorFlow: Can I run TensorFlow in a web browser?
Yes. TensorFlow.js allows you to develop and deploy machine learning models directly in the browser using JavaScript. It supports both WebGL GPU backend and WebAssembly backends for acceleration.
SourceKeras: What is Keras?
Keras is a high-level deep learning API built on top of TensorFlow that simplifies building and training neural networks. Keras 3 supports multiple backends including TensorFlow, PyTorch, and JAX, making it backend-agnostic.
SourceTensorFlow: Does TensorFlow support deployment on mobile devices?
Yes. TensorFlow Lite enables on-device machine learning on Android, iOS, Raspberry Pi, and embedded systems. LiteRT provides high-performance AI inference for resource-constrained IoT devices.
SourceKeras: What model architectures does Keras support?
Keras supports the Sequential model for linear stacks of layers, the Functional API for arbitrary graph architectures, and model subclassing for custom implementations. All approaches provide access to layers, optimizers, metrics, and callbacks.
SourceTensorFlow: What hardware accelerators does TensorFlow support?
TensorFlow supports GPU acceleration and Google's proprietary Tensor Processing Units (TPUs) for specialized matrix operations. Cloud TPUs offer native high-performance support for large-scale machine learning.
SourceKeras: Can Keras models run on TPUs and GPUs?
Yes, Keras models can run on TPU Pods or large GPU clusters, be exported to run in browsers or on mobile devices, and be served via web APIs.
SourceTensorFlow: Is TensorFlow free and open-source?
Yes. TensorFlow is completely free and open-source under the Apache 2.0 license. Google released TensorFlow as open-source on November 9, 2015 for anyone to use without licensing costs.
SourceKeras: Does Keras offer pre-trained models?
Yes, Keras provides pre-trained models through KerasHub and Keras Applications for common deep learning tasks like image classification, object detection, and NLP.
SourceKeras: Who should use Keras?
Keras is ideal for beginners and rapid prototyping due to its simplicity and user-friendly interface. Advanced users and production deployments may benefit more from lower-level frameworks like TensorFlow or PyTorch for greater customization.
Source