Retell AI vs Spiff
Side-by-side comparison of AI visibility scores, market position, and capabilities
Developer-first voice AI infrastructure API for building phone agents; low-latency streaming pipeline with multi-LLM and telephony support competing with Vapi for production voice applications.
About
Retell AI is a voice AI infrastructure platform providing APIs and tools for building conversational AI phone agents with low latency, natural turn-taking, and integration with major telephony providers and LLM providers. Founded in 2023 and headquartered in San Francisco, Retell AI has rapidly gained developer traction for its straightforward API, extensive documentation, and emphasis on production-grade reliability for AI voice applications in customer service, sales, and healthcare use cases.
Sales commission automation acquired by Salesforce for $419M in 2024; real-time commission visibility and automated ICM calculations now embedded in Salesforce Revenue Cloud.
About
Spiff (now Salesforce Spiff) is a sales commission management and incentive compensation platform automating the calculation, payment, and transparency of sales commissions for revenue teams, replacing error-prone spreadsheet-based commission processes with real-time commission visibility for reps and accurate, audit-ready calculations for finance teams. Founded in 2017 in Salt Lake City, Utah, Spiff raised over $110 million before being acquired by Salesforce in February 2024 for an estimated $419 million to strengthen Salesforce's Revenue Cloud offering.
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