Pick ChainForge if
prompt researchers who will run ChainForge locally at $0 — not Promptfoo first unless they want a YAML CI red-team harness.
Read the ChainForge pageChainForge vs Promptfoo
Our take
Pick ChainForge if you're prompt researchers who will run ChainForge locally at $0 — not Promptfoo first unless they want a YAML CI red-team harness. Pick Promptfoo if you're on a app team who will run Community for $0 (MIT, self-host) and only buy Enterprise when they need SSO, a shared dashboard, and more than 10k probes.
Best for
ChainForge Compare prompts as a graph at $0
Promptfoo Fail the build before a prompt ships
Free plan
ChainForge $0 · web play or local chainforge serve. You pay model APIs
Promptfoo No free plan
Lowest paid
ChainForge Not published by the vendor
Promptfoo Not published by the vendor
Coding agent
ChainForge
Promptfoo Eval matrix
Runs where
ChainForge Hosted
Promptfoo Hosted
Watch out
ChainForge $0 is the app, not OpenAI/Anthropic tokens
Promptfoo Community red team is 10k probes/month
Last checked
ChainForge 2026-10-27 · chainforge.ai
Promptfoo 2026-10-27 · promptfoo.dev/pricing
Which one, then?
Pick Promptfoo if
app teams who will run Community for $0 (MIT, self-host) and only buy Enterprise when they need SSO, a shared dashboard, and more than 10k probes.
Read the Promptfoo page