Understand AI costbefore it surprises you
ModelIndex helps teams move from “Which model?” to “What will this cost in production?”
Opinionated recommendations, realistic cost simulation, and scenario-based decision support.
No signup · Free · Built for real workloads
From idea to decision
ModelIndex is designed to help you reason about AI choices the same way experienced teams do — with cost, risk, and tradeoffs made explicit.
Advisor
Start with an opinionated recommendation based on your use case and priorities.
Cost simulator
Estimate monthly spend using realistic assumptions — not best-case math.
Scenarios
Save and name simulations so you can reason about alternatives.
Compare
Compare scenarios side-by-side to understand deltas and risk.
Model data last updated: 2026-01-03
Real-world starting points
Canonical scenarios reflect how common AI workloads behave in practice — including where they break.
Customer Support Chatbot
High-volume, short conversations with strict cost sensitivity.
Internal Copilot
Quality-first knowledge work with longer prompts and higher expectations.
AI Search with RAG
Context-heavy retrieval where cost is dominated by injected tokens.
Why teams use ModelIndex
Opinionated by design
We don’t list everything. We focus on what actually works in production.
Cost-first thinking
We model how usage, retries, context, and spikes affect spend.
Built for decisions
Compare scenarios and tradeoffs — not raw benchmarks.
Make AI decisions with confidence
Start with a recommendation. Validate it with cost. Decide with clarity.