THAVAGEThe AI Software Development Estimator With A Lisp
Fast first pass

DESCRIBE THE SOFTWARE
YOU WANT TO BUILD

Get a fast first-pass cost estimate. Start simple, then add more detail only if you want a tighter number.

Or start with an example
Start with the simplest version of your idea. You can add extra detail after the first pass.
Paste a brief, PRD, README excerpt, client note, or rough bullet list. Bullet points are fine. Thavage works better with messy specifics than polished vagueness.
⌘+Enter to run
See Methodology and FAQ for scope limits.
Estimates use a locked U.S. base rate table (2025–2026) for labor-priced benchmarks.
Anonymous result records may be stored to improve the benchmark over time. Uploaded file contents are analyzed for scope and not stored.
Trust the process
Methodology
See the rate table, scope rules, confidence bands, and what Thavage intentionally excludes.
Example Reports
Read the worked example reports before you trust the number on your own project.
FAQ
Get direct answers on accuracy, enterprise scope, privacy, benchmarks, and how to use the result.
This tool's Thavage estimate
$286,000
What a traditional team would likely charge to build the current Thavage product.
What a modern AI firm would likely charge: $196,000.
Actual cost: ~4,800 — Claude Max, API credits, Vercel, Supabase, domains, QA/browser tooling, and directory discovery infrastructure.
Refreshed Mar 17, 2026. Refreshed after simplifying the first screen into a faster first-pass flow and pushing advanced controls behind secondary details.