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Best Inspect AI Alternatives ranked by AI · updated Sep 2026

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Inspect AI is an open-source framework for evaluating large language models and AI agents. It serves researchers and engineering teams with structured tasks, solvers, scorers, and support for controlled model testing.

Developer: UK AI Security Institute Price: Free 🎯 inspect.aisi.org.uk
🔓 Open Source llm evaluation red teaming ai safety

Top 6 Inspect AI alternatives

2 Moonshot Library logo

Moonshot Library

AI Verify Foundation

Moonshot is an open-source toolkit for red-teaming and evaluating the safety of large language models. It is aimed at AI safety researchers,...

Pros

  • Purpose-built for LLM safety and security testing
  • Open-source and extensible with custom scenarios
  • Supports repeatable red-team evaluations

Cons

  • Smaller ecosystem than Inspect AI or Promptfoo
  • Requires more technical setup than hosted evaluation platforms
  • Less suited to broad application testing and observability

Free

Alternatives to Moonshot Library → Visit site
3

DeepEval

Confident AI

DeepEval is an open-source Python framework for testing and evaluating LLM applications with built-in and custom metrics. It is designed for developers...

Pros

  • Easy to add LLM evaluations to Python test suites
  • Includes metrics for faithfulness, relevance, bias, and safety
  • Good fit for CI-based regression testing

Cons

  • Less complete production observability than Langfuse or Phoenix
  • Python-centric compared with browser-based platforms
  • Some advanced collaboration features require the hosted service

Free open source; hosted platform available

Alternatives to DeepEval → Visit site
4

Promptfoo

Promptfoo

Promptfoo is an open-source CLI and platform for testing prompts, models, and LLM application behavior. It is aimed at developers who need...

Pros

  • Fast local and CI workflows for comparing prompts and models
  • Broad provider support across hosted and local models
  • Strong red-teaming and security testing capabilities

Cons

  • Less production tracing than LangSmith, Langfuse, or Phoenix
  • Reporting and collaboration are more limited in the open-source CLI
  • Configuration-driven workflows may be less approachable for nontechnical users

Free open source; enterprise plans available

Alternatives to Promptfoo → Visit site
5

Garak

NVIDIA

Garak is an open-source vulnerability scanner for large language models. It is designed for security researchers and developers who need automated probes...

Pros

  • More focused on automated vulnerability probing than Moonshot
  • Includes many ready-made probes and detectors
  • Runs locally against a wide range of model interfaces

Cons

  • Less suitable for general quality and capability evaluation
  • Results can require substantial manual interpretation
  • Probe coverage varies across model architectures

Free

Alternatives to Garak → Visit site
6

Giskard

Giskard

Giskard is an AI testing platform that evaluates machine learning and generative AI systems for performance, bias, robustness, and security risks. It...

Pros

  • Covers traditional ML governance as well as LLM testing
  • Provides more user-facing reporting than Moonshot
  • Useful for bias, robustness, and performance checks

Cons

  • Less deep in adversarial red teaming than Moonshot
  • Broader scope can mean fewer specialized attack techniques
  • Some collaboration and governance features require paid plans

Free, enterprise plans available

Alternatives to Giskard → Visit site

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