How to Hire an AI Agent Developer (and What It Should Cost)

Sometimes the AI worker your business needs does not exist as a ready-made listing yet. Nobody has built exactly the agent that reconciles your specific invoice format, or the automation that matches your CRM's particular quirks. That is when hiring a developer to build it directly makes more sense than buying something off the shelf, and it comes with a different set of questions than a normal purchase: how much should this cost, how do you avoid getting stuck with unfinished work, and what actually happens if it goes wrong partway through.

When to hire instead of buy

If you have already checked the marketplace and nothing matches your exact workflow, worked out whether you need an agent or an automation, and still come up short, hiring a developer for a custom build is the next step. It is also the right call when your requirement is specific enough that no general-purpose listing would reasonably cover it: a particular internal system, a particular compliance requirement, or a particular data format nobody else has needed to handle the same way.

What it should actually cost

There is no honest single number to give here, and any guide that hands you one is guessing. What a custom AI agent or automation costs depends on scope: how many systems it touches, how much judgment it needs to exercise, and how much testing and iteration the developer expects to need before it works reliably. A narrow automation that reconciles two known data formats is a smaller job than an agent that has to handle open-ended customer conversations across several product lines.

What is knowable, and worth checking before you post a brief, is how the price gets set and what you are actually paying for. On CoreDhristi's Hire a Developer flow, you post a brief describing what you need, developers bid on it with their own quoted price, and you pick who to work with, the same competitive-bid model used across most freelance and contract work, just narrowed to developers already verified on the platform. On top of whatever price you agree with the developer, CoreDhristi adds a service fee, 4% in India or 6% internationally, at the point each milestone is funded. There is no separate "hiring fee" beyond that.

How the payment structure protects you

The bigger risk in custom development work is rarely the price; it is paying for work that never gets finished, or a developer who disappears halfway through. That is what milestone-based escrow is built to prevent. The engagement splits into four equal tranches, each 25% of the total price, and money moves through a defined sequence for each one before it ever reaches the developer.

A tranche is funded before the developer starts that portion of the work, the developer marks it submitted when it is done, and you approve it before the money releases. If you neither approve nor dispute a submitted milestone within the review window, it auto-releases after 21 days, so a developer who delivered real work does not get stuck waiting indefinitely on an unresponsive client. If something is genuinely wrong with the delivered work, disputing it routes to a resolution step instead of releasing automatically.

The effect of this structure is that you are never funding more than one milestone's worth of unproven work at a time, and a developer who disappears after milestone one has only been paid for milestone one, not the whole project upfront.

What to put in your brief

A brief that gets useful, accurately priced bids describes the actual problem, not just a feature wishlist: what system or data it needs to touch, what a successful outcome looks like, and any hard constraints, like a specific tool it must integrate with or a compliance requirement it must respect. Vague briefs get vague bids, and vague bids are where cost surprises come from later, not from the milestone structure itself.

Does hired work go through the same security review as marketplace listings?

Custom work delivered through a hire engagement is not a marketplace listing, so it does not go through the standard 7-layer listing-review pipeline the same way a purchased agent does. If security review matters for your use case the way it would for a marketplace purchase, that is worth raising directly with the developer before work starts, since it is not automatic for custom-built code the way it is for anything you buy off the marketplace.

Frequently asked questions

How long does it take to get bids after posting a brief? This varies by how specific and complete the brief is and by developer availability at the time; a clear, detailed brief attracts more relevant bids faster than a vague one.

Can I hire the same developer again for future work? Yes, nothing prevents posting a new brief and working with a developer you have already worked with, and a good working relationship from a prior project is a reasonable factor to weigh when picking bids.

What happens if I am not satisfied with a milestone? You dispute it instead of approving it. That pauses the automatic release and routes the milestone to a resolution step rather than releasing the funds or refunding them automatically.

Is the 4% or 6% service fee refundable if a milestone is disputed and refunded? No. The service fee is charged at the point a milestone is funded and is not refunded even if that specific milestone is later refunded, the same non-refundable service-fee policy that applies to marketplace purchases.

Can I hire a developer for something small, or is this only for large projects? There is no minimum project size to post a brief. The same four-milestone structure applies regardless of project size, though for a very small engagement it is worth discussing with bidding developers whether four separate milestones make sense or whether a simpler structure fits better.