Pick Braintrust if
aI teams who will write a scorer and pay when processed data or scores blow past Starter.
Read the Braintrust pageBraintrust vs PromptLayer
Our take
Pick Braintrust if aI teams who will write a scorer and pay when processed data or scores blow past Starter. Pick PromptLayer if aI teams who will pay Pro or Team so more than 10 playground runs a day and 2.5k requests sit on a shared registry. Skip Braintrust if developers who only want a $0 request table (Helicone).
Best for
Braintrust Measure the agent before you ship
PromptLayer Ship prompts without a redeploy
Free plan
Braintrust $0 · /month. $10 model credits + token rates. 1 GB processed data, then $4/GB. 10k scores, then $2.50/1k. 14-day retention. Unlimited users, projects, datasets, playgrounds, experiments. No credit card
PromptLayer $0 · /month. 5 users; 2.5k requests / month; 1 workspace; 250 eval cell executions / month; 10 playground runs / day; 10MB max dataset; 750 agent node executions / month. SaaS
Lowest paid
Braintrust Pro $249/mo
PromptLayer Pro $49/mo
Coding agent
Braintrust Loop agent
PromptLayer Agents / workflows
Watch out
Braintrust $0 is the platform fee
PromptLayer Free is 2.5k requests and 10 playground runs a day
Last checked
Braintrust 2026-10-22 · braintrust.dev/pricing
PromptLayer 2026-10-22 · promptlayer.com/pricing
Which one, then?
Pick PromptLayer if
aI teams who will pay Pro or Team so more than 10 playground runs a day and 2.5k requests sit on a shared registry.
Read the PromptLayer page