{"slug":"inspect-ai","name":"Inspect AI","domain":"aisi.org.uk","verdict":"As of 2026-07-13, ChatGPT, Claude, Gemini, Grok collectively rank Inspect AI #4 of 8 for open-source llm eval framework (one of 3 leaderboards it appears on). Source: https://modelsagree.com/product/inspect-ai (modelsagree.com, CC BY 4.0).","best_rank":4,"categories":3,"entries":[{"slug":"best-llm-eval-framework-open-source","title":"Best open-source LLM eval framework","rank":4,"of":8,"score":6,"appearances":2,"modelRanks":{"ChatGPT":1,"Claude":5},"reason":"Best overall architecture for modern evals: composable tasks, agents, tools, sandboxes, scorers, 200-plus reusable evaluations, strong model-provider support, and excellent logs, web visualization, and VS Code tooling","reasons":[{"model":"ChatGPT","reason":"Best overall architecture for modern evals: composable tasks, agents, tools, sandboxes, scorers, 200-plus reusable evaluations, strong model-provider support, and excellent logs, web visualization, and VS Code tooling"},{"model":"Claude","reason":"The UK AI Safety Institute's framework is the best-engineered option for complex, multi-turn, and agentic evals — composable solvers/scorers, sandboxed tool execution, strong logging/viewer, and adoption by frontier-model safety teams gives it unusual rigor for an open-source project."}],"fixes":[{"model":"ChatGPT","fix":"Make installation and first-run authoring substantially simpler for ordinary application teams"},{"model":"Claude","fix":"Researcher-oriented with a smaller ecosystem and steeper learning curve; overkill if you just need regression tests on prompts."}],"updated":"2026-07-13","rank_history":{"days":["2026-07-12","2026-07-13"],"ranks":[4,3]},"api":"https://modelsagree.com/api/v1/best/best-llm-eval-framework-open-source.json"},{"slug":"best-ai-agent-evaluation-platform","title":"Best AI agent evaluation platform","rank":7,"of":8,"score":1,"appearances":1,"modelRanks":{"Claude":5},"reason":"The UK AI Safety Institute's open-source framework is the rigor benchmark for agentic testing — sandboxed multi-step tasks, tool-use scaffolds, and scorers used to run GAIA/SWE-bench-style evals by frontier labs and researchers; unmatched for reproducible task-completion testing. Assumes the practitioner needs offline capability testing, not production monitoring.","reasons":[{"model":"Claude","reason":"The UK AI Safety Institute's open-source framework is the rigor benchmark for agentic testing — sandboxed multi-step tasks, tool-use scaffolds, and scorers used to run GAIA/SWE-bench-style evals by frontier labs and researchers; unmatched for reproducible task-completion testing. Assumes the practitioner needs offline capability testing, not production monitoring."}],"fixes":[{"model":"Claude","fix":"It's a code-first harness with no hosted observability or live-traffic story — wrong tool for teams whose main need is watching real agent traffic in production."}],"updated":"2026-07-15","rank_history":{"days":["2026-07-13","2026-07-15"],"ranks":[7,null]},"api":"https://modelsagree.com/api/v1/best/best-ai-agent-evaluation-platform.json"},{"slug":"best-ai-red-teaming-tool","title":"Best AI red teaming and LLM security testing tool","rank":8,"of":8,"score":1,"appearances":1,"modelRanks":{"Gemini":5},"reason":"UK AI Safety Institute's declarative, code-first framework built for highly rigorous, reproducible evaluations of frontier model capabilities and agent safety.","reasons":[{"model":"Gemini","reason":"UK AI Safety Institute's declarative, code-first framework built for highly rigorous, reproducible evaluations of frontier model capabilities and agent safety."}],"fixes":[{"model":"Gemini","fix":"Designed for academic and safety research audits rather than rapid application-level vulnerability scanning."}],"updated":"2026-07-13","rank_history":{"days":["2026-07-12","2026-07-13"],"ranks":[null,8]},"api":"https://modelsagree.com/api/v1/best/best-ai-red-teaming-tool.json"}],"page":"https://modelsagree.com/product/inspect-ai","check":"https://modelsagree.com/check?q=Inspect%20AI","updated":"2026-08-10T18:18:45.051Z","attribution":"modelsagree.com, CC BY 4.0"}