Promptfoo alternatives
6 evaluation tools in the same lane as Promptfoo, ranked by editorial score.
GI
Giskard
Evaluation · Multi-model
8.2
Continuous AI red teaming platform that stress-tests LLM agents for vulnerabilities before they hit production.
Freemium· Open-source free tier; Giskard Hub enterprise pricing on requestllm-red-teamingagent-security-testing
OE
OpenAI Evals
Evaluation · OpenAI GPT models (extensible)
8.1
OpenAI's open-source framework for benchmarking LLMs against a shared registry of evaluations.
Free· Free (MIT); you pay OpenAI API costs for eval runsllm-benchmarkingregression-testing
IA
Inspect AI
Evaluation · Multi-model
7.2
Open-source LLM evaluation framework from the UK AI Security Institute with 200+ built-in benchmarks.
Free· Free and open source (MIT-style license); you pay only for underlying model API usage.llm-benchmarkingagent-evaluation
AA
Athina AI
Evaluation · Multi-model
8.1
Collaborative LLM evaluation and observability platform for teams shipping AI features to production.
Freemium· Starter free (10k logs/mo); Pro & Enterprise customllm-evaluationprompt-management
LA
LangFast
Evaluation · Multi-model
7.0
No-signup LLM playground for testing, comparing, and versioning prompts against your own API keys.
Paid· One-time lifetime ~$60-$120; 14-day money-backprompt-testingprompt-versioning
PF
Prompt Foundry
Evaluation · OpenAI + Anthropic (multi-model)
7.1
Prompt management and side-by-side LLM evaluation for OpenAI and Anthropic models.
Freemium· Free tier (10 prompts, 500 evals/mo); Pro $15/user/mo; Enterprise customprompt-managementmodel-comparison