Promptfoo vs Arize Phoenix

A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.

Promptfoo MIT-licensed LLM eval and red-teaming CLI, now owned by OpenAI Visit Arize Phoenix Open-source LLM evaluation and observability Visit
RECATOOLS Score 8.1 / 10 7.8 / 10
Capability 8 8
Value for money 8.5 9
Ease of use 7.5 6
ASEAN readiness 6.5 8
API quality 8 8
Pricing Freemium Open Source
Free tier
Paid from
Has API
Open source
Free to use
Users
Founded 2023
Maker
Verdict

Promptfoo built its reputation as the eval tool developers actually reach for instead of rolling their own harness — YAML configs, 50-plus provider support, and a red-teaming mode that generates jailbreak and prompt-inje...

Arize Phoenix is an open-source observability and evaluation toolkit for LLM and AI applications, offering tracing, prompt and RAG debugging, evals, and OpenTelemetry-based instrumentation that runs locally or self-hoste...

Full review → Full review →
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Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.