Tools for teams running agents
In-browser tools for the questions that come up before and during production: what will this cost, and how do the models compare. No signup, and nothing you type leaves your browser.
LLM Token & Cost Calculator
Compare per-call and monthly cost across 15 current models. Prices checked weekly, last 20 July 2026.
Open the tool →scorecardAgent Reliability Grader
8 questions, a letter grade per dimension, and the one thing to fix next.
Open the tool →securityPrompt Injection Test
Real attack patterns from open-source red-team datasets, scored client-side on which injections took.
Open the tool →calculatorAgent ROI & TCO Calculator
The monthly and annual cost of unreliable agents, and what cutting the failure rate is worth. CFO-shareable.
Open the tool →templateAgent Evaluation Template
What to score, a rubric, a golden-dataset checklist, and how to wire it into Prefactor. Copy it, no signup.
Open the tool →Prefer the production version of these questions? Prefactor tracks quality, cost, and latency per agent, continuously. See the platform →