AI eval and observability platform: tracing, LLM and human scoring, quality gates. Used by Vercel, Notion and Replit.
braintrust.dev
Alternatives to
promptfoo
Best alternatives to promptfoo in 2026
When companies build apps on top of AI models — chatbots, assistants, support tools — they need to check that the AI answers correctly and cannot be tricked into revealing or saying things it shouldn't. promptfoo is a free tool that runs those checks automatically: part spell-checker, part security guard for AI applications. promptfoo is an open-source platform for testing and securing LLM applications. Its evaluation side lets developers define test cases for prompts, agents and RAG pipelines, then compare outputs side by side across providers — OpenAI, Anthropic, Azure, Bedrock, Ollama and others — from a CLI or a local web UI with live reload. Its security side automates red teaming: generated attacks probe for prompt injections, jailbreaks, PII leaks and business-rule violations, and real-time guardrails plus an MCP proxy defend agent traffic in production. Everything runs locally by design — prompts never leave the machine during evaluation — and the same checks wire into CI/CD so regressions and vulnerabilities block a pull request instead of reaching users. The project is MIT-licensed TypeScript with over 23,000 GitHub stars and a 300k+ user community feeding its threat intelligence. promptfoo was acquired by OpenAI in March 2026 but remains open source and independently maintained, with an enterprise tier for larger teams.
Quick comparison of promptfoo alternatives
| # | Tool | Best for | Price |
|---|---|---|---|
| 1 | AI product teams | ML engineers | — | |
| 2 | Développeurs | — | |
| 3 | Développeurs | — | |
| 4 | AI engineering teams | Product teams with non-technical prompt editors | — | |
| 5 | AI/ML engineers | Data scientists | Platform teams | — | |
| 6 | ML engineers | Data engineers | Enterprises in finance, retail, government | — | |
| 7 | ML engineers | Data engineers | — | |
| 8 | TypeScript/Node.js developers | Product engineers | — | |
| 9 | Python developers | Automation teams | — |
#1
- ✓ Trace-to-dataset loop: production failures become permanent eval cases
- ✓ Quality gates block bad AI releases like CI blocks bad code
#4
Collaboration platform for AI teams to manage, test and monitor the prompts that power their LLM applications.
promptlayer.com
- ✓ Lets non-engineers safely edit and test prompts
- ✓ Eval harness catches regressions before deployment
#5
Serverless cloud platform that runs Python code, including AI model training and inference, on GPUs with sub-second startup and pay-per-second billing.
modal.com
- ✓ Sub-second cold starts even for large GPU-backed containers
- ✓ Pay-per-second, zero charge for idle compute
#6
Managed feature store and AI lakehouse platform for building production machine-learning systems with millisecond-latency feature serving.
hopsworks.ai
- ✓ Sub-millisecond online feature lookups for real-time inference
- ✓ Combines feature store, lakehouse and MLOps in one platform
#7
Open-source feature store that manages the machine-learning data teams use for both model training and real-time predictions.
feast.dev
- ✓ Completely free and open source, no paid tier
- ✓ Broad support: 10+ offline stores, 15+ online stores
#8
TypeScript framework for AI agents and workflows: typed tools, graph orchestration, memory, RAG and 90+ model providers.
mastra.ai
- ✓ Most complete agent framework in the TypeScript ecosystem (26k+ stars)
- ✓ Typed agents/tools + graph workflows with human-in-the-loop built in
#9
Python framework for role-based multi-agent teams: Crews plus event-driven Flows, from MIT open source to enterprise suite.
crewai.com
- ✓ Intuitive role-based Crew model — fastest multi-agent prototyping in Python
- ✓ MIT license, 55k+ stars, very large community
FAQ about promptfoo alternatives
- What is the best alternative to promptfoo in 2026?
- Based on our selection, Braintrust is the best alternative to promptfoo in 2026. AI eval and observability platform: tracing, LLM and human scoring, quality gates. Used by Vercel, Notion and Replit.. See our full ranking above to compare all options.
- Is promptfoo free?
- promptfoo is a paid tool. Several alternatives in our selection offer free or freemium versions.
- How many alternatives to promptfoo are there?
- mySelectas has listed 9 alternatives to promptfoo in the AI & Machine Learning category. Our selection is updated regularly to include the best options available.