Simple-Evals
Evaluation tools for language models by OpenAI.
- Status
- Generally available
- Last checked
- Checked · Oct 12, 2026
- License
- Open source
- Pricing
- Free tier · from $0
What it is
Simple-Evals provides a set of evaluation tools and utilities to assess the performance of language models. It is designed to help developers understand how well their models are performing under various conditions, ensuring reliable and accurate outputs.
Simple-Evals stands out by offering a comprehensive and flexible framework for evaluating language models, making it easier to integrate into existing development workflows without the need for extensive setup.
When it fits — and when it doesn’t
A good fit for
Developers who need to evaluate the robustness and accuracy of their custom-trained language models.
Teams working on natural language processing projects requiring rigorous testing frameworks.
Researchers comparing different language models for specific tasks.
Look elsewhere if
Projects that require real-time evaluation capabilities as Simple-Evals is designed for batch processing.
Use cases where a graphical user interface (GUI) is preferred over command-line or script-based evaluations.
Known weaknesses
Each one links to the public issue, changelog or docs page it came from, where we have one.
- 01
Limited documentation for advanced use cases
Detailed guides and examples are lacking, making it hard to implement complex evaluations
- 02
Performance issues with large datasets
Evaluation processes can become slow when dealing with very large datasets or models
What it does well
Comprehensive evaluation metrics for language models.
Easy integration with existing model pipelines.
Supports various types of evaluations including accuracy, consistency, and robustness.
Pricing
- Free tier
- YesOpen source — free to use
- Paid from
- $0
- Model
- Flat rate
- Enterprise plan
- No
Pricing not independently confirmed — check the vendor’s page.
Performance benchmarks
How Fast Is It?
Set up Simple-Evals
Setup steps, common gotchas and what to check after 30 days.
Get the badge
A small badge for Simple-Evals’s README or site: its name, “Tracked on AI Navigator”, and the availability status and check month from this page. It updates as the catalog does.
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