kitio.aiKeras vs LMQL
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Keras starts at Free and LMQL starts at Free. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Multi-backend support
- Functional and sequential APIs
- KerasHub pretrained models
- KerasTuner hyperparameter search
- Keras RS recommenders
- Constrained generation
- Typed output variables
- Python integration
- Nested queries
- Online playground
| Feature | Keras | LMQL |
|---|---|---|
| Best for | Open-source deep learning library that runs on JAX, PyTorch and TF | Programming language for prompting LLMs with types and constraints |
| Category | Models & APIs | Models & APIs |
| Pricing model | Free | Free |
| Starting price | Free | Free |
| Free plan | Yes, fully free | Yes, fully free |
| Made by | Keras team at Google | SRI Lab, ETH Zurich |
| Based in | United States | Switzerland |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Keras starts at Free and LMQL starts at Free. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Keras
- Free and open source
- Same code runs on three backends
- Pretrained models in KerasHub
- Thorough docs and examples
- Requires Python and ML knowledge
- Very custom research may need raw framework code
- No hosted training service
LMQL
- Free and open source
- Guarantees output formats
- Backed by academic research
- New syntax to learn
- Smaller community than mainstream frameworks
- Release pace has been slow
Which one should you choose?
Choose Keras if you want:
- Free and open source
- Same code runs on three backends
- Pretrained models in KerasHub
Watch out: requires python and ml knowledge.
Choose LMQL if you want:
- Free and open source
- Guarantees output formats
- Backed by academic research
Watch out: new syntax to learn.
Keras vs LMQL FAQ
What is the difference between Keras and LMQL?
Keras: Open-source deep learning library that runs on JAX, PyTorch and TF. LMQL: Programming language for prompting LLMs with types and constraints. Both are models & apis tools.
Is Keras or LMQL cheaper?
Keras starts at Free and LMQL starts at Free. Check both pricing pages for current plans.
Do Keras and LMQL have free plans?
Keras: Yes, fully free. LMQL: Yes, fully free.
Who makes Keras?
Keras is made by Keras team at Google, based in United States.
Who makes LMQL?
LMQL is made by SRI Lab, ETH Zurich, based in Switzerland.
Which should I choose, Keras or LMQL?
Choose Keras if you value free and open source and same code runs on three backends. Choose LMQL if you value free and open source and guarantees output formats.