Inspect AI vs Promptfoo

Inspect AI is a free, open-source, self-hosted framework for evaluating large language models. It covers coding, agentic tasks, reasoning, knowledge, behavior, and multimodal understanding. Evaluations combine datasets, solvers, and scorers, with more than 200 pre-built evaluations available. Inspect View provides web-based monitoring and visualization, while a VS Code extension supports log browsing, task execution, debugging, and option configuration. The framework has built-in support for more than 20 model providers and local inference through Hugging Face, vLLM, and SGLang. Documented provider groups include OpenAI, Anthropic, Google, AWS Bedrock, Azure AI, Ollama, and others. Standard tools cover web search, code execution, text editing, computer use, and web browsing, with MCP support. Agents from OpenAI Agents SDK, Pydantic AI, LangChain, Claude Code, Codex CLI, and Gemini CLI can be integrated. Untrusted model code can run in Docker, Kubernetes, Modal, Proxmox, Vagrant, and other systems through an extension API.

Promptfoo helps developers and enterprises evaluate prompts and test AI applications for security risks. It compares prompt outputs across multiple models in a web view. Red-team testing simulates users to look for prompt injections, jailbreaks, data leaks, business rule violations and insecure agent tool use. Its getting-started guide lists more than 60 providers, including OpenAI, Anthropic, Google and local models such as Ollama. Integrations include CI systems such as GitHub Actions, GitLab CI, Jenkins, Azure Pipelines, CircleCI and Bitbucket Pipelines, plus Splunk, Burp Suite, Google Sheets and MCP. Installation is available through npm, npx or Homebrew. Promptfoo requires Node.js 22.22.0 or newer and recommends Node.js 24 LTS. The free Community plan includes all LLM evaluation features and 10k red-team probes per month, and can run locally or be self-hosted. Enterprise includes managed cloud deployment; On-Premise runs on customer infrastructure. Promptfoo says it is based in San Francisco, is now part of OpenAI and remains open source.