The plans are built around different units
Digraph publishes prompt and brand limits: Pro lists 300 tracked prompts, 3 brands, and 9 AI systems at $249/month. Rank Prompt’s agency pages emphasize portfolio capacity: Agency lists up to 500 brands at $149/month, while Agency Plus lists up to 1,000 brands at $299/month and adds an agency dashboard and client portal. A brand count is not a prompt or response count. Before comparing value, model the actual number of client brands, prompts, engines, markets, runs, users, and reports your agency will operate.
Rank Prompt is designed for white-label agency delivery
Rank Prompt’s agency pages describe white-label reports and branded delivery, prospecting, team collaboration, and a client portal on Agency Plus. That can fit an agency whose product is a recurring client-facing service. Ask for the full workflow: create a prospect snapshot, restrict client access, deliver a report under your brand, export the evidence, and schedule the next measurement. Confirm which features are included at the tier you would actually buy.
Digraph centers the evidence behind the answer
Digraph’s public product materials emphasize the tracked question, full answer, citations, source domains, competitor context, and follow-up analysis. That can fit teams that need to explain why an answer changed or turn a citation gap into a bounded SEO, content, accuracy, or authority investigation. Do not infer that a broader brand allowance provides the same answer-level review; open the underlying response, cited URL, metric definition, and export in both products.
API and operating economics deserve a separate test
Rank Prompt documents REST API, MCP, and webhooks on paid plans with tiered request caps. Digraph lists API access on Enterprise and reports/exports on public plans. If an agency needs automated onboarding, client portals, custom reporting, or downstream workflows, test the exact API fields, request limits, authentication scope, webhooks, retention, and branded output. Include analyst time and client delivery effort in the total cost—not just the subscription price.
Run a controlled side-by-side pilot
Use one or two representative client brands and a fixed set of discovery, comparison, recommendation, and accuracy prompts. Match the market, language, competitors, active engines, collection schedule, and measurement window. For every result, record the full answer, brand role, competitor mentions, citations, cited URLs, source domains, and export format. Then test the client-facing report and the next action. Public feature descriptions are vendor claims, not independent evidence of ranking or revenue gains.