Priced from the published rates of every tool in the recommended stack — plus the setup time, and the point below which it stops being worth it.
Legacy Code Modernization with Coding Agents costs about $20–$50 a month in software for a team of 3, based on the published entry prices of the 4 tools in its recommended stack. 1 of them is billed by usage or quoted by sales, so treat that as a floor rather than a total. Setting it up takes roughly 40–90 hours, or $1,400–$3,150 of internal time at $35/hr. At those prices it pays for itself above roughly 0.5 hours a week spent on this task — below that, the software costs more than the workflow returns.
3 seats, entry tiers
40–90 hrs · advanced
to cover the monthly bill
Set your own numbers. Software cost comes from the published prices of the stack below; the value side uses the legacy code modernization with coding agents model.
+ 1 tool priced by usage or quote
40–90 hrs at $35/hr
$849 value − $50 software
Worth it at these numbers. The stack clears its own bill and repays the top of the setup range in about 4 months. Below roughly 0.5 hours a week spent on this task it stops paying for itself.
1 tool in this stack does not publish a flat monthly price, so the software figure is a floor. Get a quote before committing.
Assumptions: Automating 70% of 8 hrs/week at $35/hr, before software cost — the stack price is subtracted separately above. Setup hours come from the workflow's recorded difficulty, not a vendor estimate.
See the full Legacy Code Modernization with Coding Agents workflowEach price is the vendor's cheapest published paid tier, taken from the pricing notes on our tool pages. Where a vendor does not publish a figure we say so rather than estimating one.
| Tool | Layer | Billing | Entry price | At 3 seats |
|---|---|---|---|---|
| GitHub Copilot | AI Coding | per seat / month | $10/user/mo | $30 |
| Cursorlean pick | AI Coding | flat monthly | $20/mo | $20 |
| Claude Code | AI Coding | quote only | ~$25/user/mo* | — |
| LangGraphlean pick | AI / LLM | free to run | $0 | $0 |
| Full stack, 3 seats | $50+ | |||
* Figure the vendor gestures at without publishing. Shown for context only — it is not counted in any total on this page.
1 of the 4 tools does not publish a flat monthly price — quoted by sales. Every total here is therefore a floor. Budget for a quote before you commit.
Most teams do not buy every tool in a recommended stack. Taking the cheapest option in each layer still runs the workflow end to end, and it is the honest low end of the range.
Software is the smaller number in year one. This workflow is rated advanced, which in practice means 40–90 hours to get live — $1,400–$3,150 of internal time at $35/hr. The spread is real: the same workflow takes an afternoon on tidy data and a fortnight on messy data.
Expected return: The honest framing is risk reduction and unblocked delivery, not developer productivity. A legacy system with no test coverage imposes a permanent tax: every change is slow and dangerous, and some changes are refused outright. The measurable returns are change lead time on the migrated capability, incident rate attributable to the legacy system, and the cost of the specialist skills you no longer have to retain. Where a full rewrite would be a multi-year program with a poor completion record, the incremental approach delivers value per slice and can be stopped without writing off the investment. Budget agent tooling as a small line item against engineering cost — the constraint is review capacity, not tokens.
Practical stacks with real numbers attached. No fluff, unsubscribe anytime.
Below roughly 0.5 hours a week spent on this task, the $50/month software bill is bigger than what the workflow gives back. At that scale the manual version is cheaper and you should leave this until the volume justifies it.
Skip this if the legacy system is genuinely stable, rarely changed, and not blocking anything — "nobody understands it" is not on its own a business case, and the correct action is to document it and leave it alone. Skip it if you cannot fund the review capacity, because agent-authored changes to a critical system without human review is the fastest way to convert a slow problem into an outage. Do not use agents for a big-bang rewrite under any circumstances; the failure mode is a plausible-looking system with unknown behavioral differences from the original, which is strictly worse than the legacy system you started with. And do not let production data reach a prompt or a test fixture without sanitization.
It is also worth pausing if the unpriced parts of the stack come back high. Sales-quoted pricing is where these builds most often stop making sense, and it is the one number this page cannot work out for you.
This page prices the Legacy Code Modernization with Coding Agents workflow — read that for the steps, the templates, and the full ROI calculator. Or browse every workflow we publish.
Free implementation guides for SMB operators and enterprise teams — workflows, prompts, governance, and tool stacks built to ship.