---
title: "Auto-PyTorch vs scikit-optimize"
type: "comparison"
canonical_url: "https://www.graphcanon.com/compare/automl-auto-pytorch-vs-scikit-optimize-scikit-optimize"
tools: ["automl-auto-pytorch", "scikit-optimize-scikit-optimize"]
---

# Auto-PyTorch vs scikit-optimize

*GraphCanon updated Aug 4, 2026*

## Verdict

Pick Auto-PyTorch if auto-PyTorch specializes in automatic architecture search and hyperparameter optimization for deep-learning models using PyTorch; pick scikit-optimize if scikit-Optimize is built for minimizing noisy and expensive black-box functions using sequential model-based methods, and it provides a convenient interface with scipy.optimize.

[Auto-PyTorch](https://github.com/automl/Auto-PyTorch) reports 2.5k GitHub stars, 303 forks, and 75 open issues, last pushed Apr 9, 2024. [scikit-optimize](https://scikit-optimize.github.io) has 2.8k stars, 559 forks, and 318 open issues, last pushed Feb 23, 2024. Figures are from public GitHub metadata via [Auto-PyTorch's repository](https://github.com/automl/Auto-PyTorch) and [scikit-optimize's repository](https://github.com/scikit-optimize/scikit-optimize).

| | [Auto-PyTorch](/tools/automl-auto-pytorch.md) | [scikit-optimize](/tools/scikit-optimize-scikit-optimize.md) |
| --- | --- | --- |
| Tagline | Automatic architecture search and hyperparameter optimization for PyTorch | Sequential model-based optimization library with scipy.optimize interface |
| Stars | 2,541 | 2,829 |
| Forks | 303 | 559 |
| Open issues | 75 | 318 |
| Language | Python | Python |
| Adopt for | Auto-PyTorch specializes in automatic architecture search and hyperparameter optimization for deep-learning models using PyTorch. | Scikit-Optimize is built for minimizing noisy and expensive black-box functions using sequential model-based methods, and it provides a convenient interface with scipy.optimize. |
| Persona | - | - |
| Runtime | - | - |
| License | Apache-2.0 | BSD-3-Clause |
| Categories | Data & Retrieval, Model Training | Model Training |

## Trust and health

_Sourced signals - not a safety guarantee. No winner column._

| | [Auto-PyTorch](/tools/automl-auto-pytorch.md) | [scikit-optimize](/tools/scikit-optimize-scikit-optimize.md) |
| --- | --- | --- |
| Maintenance | Dormant (18%) | Archived (8%) |
| Days since push | 846d | 893d |
| Archived on GitHub | No | Yes |
| Open issues (now) | 75 | 318 |
| Full report | [trust report](/tools/automl-auto-pytorch/trust.md) | [trust report](/tools/scikit-optimize-scikit-optimize/trust.md) |

## Shared compatibility

- **Python**: [Auto-PyTorch](/tools/automl-auto-pytorch.md) - Python runtime; [scikit-optimize](/tools/scikit-optimize-scikit-optimize.md) - Python runtime

## Decision facts: Auto-PyTorch

- **Adopt for:** Auto-PyTorch specializes in automatic architecture search and hyperparameter optimization for deep-learning models using PyTorch.

## Decision facts: scikit-optimize

- **Adopt for:** Scikit-Optimize is built for minimizing noisy and expensive black-box functions using sequential model-based methods, and it provides a convenient interface with scipy.optimize.

## Choose when

### Choose Auto-PyTorch if…

- License: Auto-PyTorch is Apache-2.0, scikit-optimize is BSD-3-Clause.
- Tags unique to Auto-PyTorch: automl, deep-learning, pytorch, tabular-data.
- Also covers Data & Retrieval.
- Auto-PyTorch ships Docker support for self-hosted deployment.
- Use when you need to automate both architectural searches and hyperparameter tuning specifically for PyTorch-based deep learning models.

### Choose scikit-optimize if…

- License: scikit-optimize is BSD-3-Clause, Auto-PyTorch is Apache-2.0.
- Tags unique to scikit-optimize: bayesian-optimization, hyperparameter-tuning, machine-learning, scikit-learn.
- Use Scikit-Optimize when dealing with optimization problems where function evaluations are expensive or noisy, making traditional derivative-based approaches less effective.

## When NOT to use Auto-PyTorch

- Avoid using it if your AI development focuses on frameworks other than PyTorch.
- Do not use when the requirements do not involve deep learning models or you are not interested in automating architecture search and hyperparameter tuning.

## When NOT to use scikit-optimize

- Avoid using Scikit-Optimize if your optimization function can be efficiently evaluated with a high number of gradients, as it does not perform gradient-based optimization and could be less efficient.
- Do not select this tool when you need real-time or online learning updates, as its sequential model-based approaches are better suited for batch processing environments.
- Steer clear if the problems you face have analytical solutions or can be easily solved with traditional gradient descent methods, as Scikit-Optimize’s overhead may not be justified.

## Common questions

### What is the difference between Auto-PyTorch and scikit-optimize?

Auto-PyTorch: Automatic architecture search and hyperparameter optimization for PyTorch. scikit-optimize: Sequential model-based optimization library with scipy.optimize interface. See the comparison table for live GitHub stats and shared categories.

### When should I choose Auto-PyTorch over scikit-optimize?

Choose Auto-PyTorch over scikit-optimize when License: Auto-PyTorch is Apache-2.0, scikit-optimize is BSD-3-Clause; Tags unique to Auto-PyTorch: automl, deep-learning, pytorch, tabular-data; Also covers Data & Retrieval; Auto-PyTorch ships Docker support for self-hosted deployment; Use when you need to automate both architectural searches and hyperparameter tuning specifically for PyTorch-based deep learning models.

### When should I choose scikit-optimize over Auto-PyTorch?

Choose scikit-optimize over Auto-PyTorch when License: scikit-optimize is BSD-3-Clause, Auto-PyTorch is Apache-2.0; Tags unique to scikit-optimize: bayesian-optimization, hyperparameter-tuning, machine-learning, scikit-learn; Use Scikit-Optimize when dealing with optimization problems where function evaluations are expensive or noisy, making traditional derivative-based approaches less effective.

### When should I avoid Auto-PyTorch?

Avoid using it if your AI development focuses on frameworks other than PyTorch. Do not use when the requirements do not involve deep learning models or you are not interested in automating architecture search and hyperparameter tuning.

### When should I avoid scikit-optimize?

Avoid using Scikit-Optimize if your optimization function can be efficiently evaluated with a high number of gradients, as it does not perform gradient-based optimization and could be less efficient. Do not select this tool when you need real-time or online learning updates, as its sequential model-based approaches are better suited for batch processing environments. Steer clear if the problems you face have analytical solutions or can be easily solved with traditional gradient descent methods, as Scikit-Optimize’s overhead may not be justified.

### Is Auto-PyTorch or scikit-optimize more popular on GitHub?

scikit-optimize has more GitHub stars (2,829 vs 2,541). Stars measure visibility, not whether either tool fits your constraints.

### Are Auto-PyTorch and scikit-optimize open source?

Yes - both are open-source projects on GitHub (Auto-PyTorch: Apache-2.0, scikit-optimize: BSD-3-Clause).

### Where can I find alternatives to Auto-PyTorch or scikit-optimize?

GraphCanon lists graph-backed alternatives at [Auto-PyTorch alternatives](/tools/automl-auto-pytorch/alternatives) and [scikit-optimize alternatives](/tools/scikit-optimize-scikit-optimize/alternatives) ([Auto-PyTorch markdown twin](/tools/automl-auto-pytorch/alternatives.md), [scikit-optimize markdown twin](/tools/scikit-optimize-scikit-optimize/alternatives.md)), ranked by typed relationship edges rather than popularity votes.

### Is there a machine-readable version of this comparison?

Yes. The markdown twin at [this comparison](/compare/automl-auto-pytorch-vs-scikit-optimize-scikit-optimize.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.

### Which is better maintained, Auto-PyTorch or scikit-optimize?

Auto-PyTorch: Dormant. scikit-optimize: Archived. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.

### Where are the full trust reports for Auto-PyTorch and scikit-optimize?

GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [Auto-PyTorch trust report](/tools/automl-auto-pytorch/trust); [scikit-optimize trust report](/tools/scikit-optimize-scikit-optimize/trust).

---

**Machine-readable endpoints**

- JSON: [`/api/graphcanon/graph?tool=automl-auto-pytorch`](/api/graphcanon/graph?tool=automl-auto-pytorch)
- LLM index: [/llms.txt](/llms.txt)
- Full corpus: [/llms-full.txt](/llms-full.txt)

_GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_