How much does an AI browser extension cost?
An AI browser extension typically costs about $1,300. Half of the 51 priced job posts we tracked fall between $200 and $3,900, and one in ten reaches $8,000 or more.
Band: 25th to 75th percentile of fixed budgets and hourly estimates. Line: median.
Key facts
- Typical cost: $1,300, with the middle half of posts between $200 and $3,900.
- That is 48% below the $2,500 median across all AI builds we track.
- Work expected to take under a month has a median of $200, against $500 for three to six months.
- Fixed-price median $250; hourly estimate median $4,000.
- Hourly rates mostly run from $11 to $36 an hour.
- Most requested skills: Google Chrome Extension, JavaScript and API.
What the build includes
An AI browser extension adds AI features to the pages people already use, such as summarising, drafting or extracting data, inside Chrome or another browser.
A typical scope
- The extension and its permissions
- A backend for model calls
- Accounts and payment
- Page reading logic
- Chrome Web Store submission
What drives the cost
Work expected to take under a month has a median of $200, against $500 for three to six months. Part of that gap is built in, because hourly estimates are calculated from expected length. Fixed-price posts state a median of $250, while hourly posts work out at $4,000 on our estimate: 16 times as much. One likely reason is that fixed budgets tend to cover a small first step, while hourly posts describe sustained work.
| Expected length | Median cost | Priced posts |
|---|---|---|
| Under 1 month | $200 | 18 |
| 1 to 3 months | $2,200 | 24 |
| 3 to 6 months | $500 | 5 |
| Over 6 months | Too few posts | 4 |
Posts asking for expert-level talent have a median of $2,550, 5.1 times the $500 for intermediate talent. 33% of posts ask for experts.
| Seniority requested | Median cost | Priced posts |
|---|---|---|
| Entry level | Too few posts | 3 |
| Intermediate | $500 | 31 |
| Expert | $2,550 | 17 |
What moves the price most
- How many sites it must work on
- Whether it needs accounts and billing
- How much page-specific logic it needs
Skills and hourly rates
The skills named most often in these posts are Google Chrome Extension (77%), JavaScript (60%), API (35%) and API Integration (32%). Read this as the working stack for this kind of build, and as a checklist when assessing who should do it.
Hourly posts for this work typically offer $11 to $36 an hour, the middle half of posted rates. The median top of the range is $32 an hour across 22 hourly posts. These are rates in the open freelance market: agencies and in-house teams usually cost more.
Who is buying
33% of posts ask for expert-level talent. Buyers are most often based in the United States and India, with 47% in the United States. Among posts that state a company size, 93% come from companies of up to 10 people. A typical post draws about 7 applicants.
What to check before you commit
- Keep API keys off the client
- Request the narrowest permissions possible
- Expect target sites to change and break selectors
Where the demand is
The countries with the most buyers for this build. Each page shows how that market compares.
Frequently asked questions
How much does an AI browser extension cost?
An AI browser extension typically costs about $1,300. Half of the 51 priced job posts we tracked fall between $200 and $3,900, and one in ten reaches $8,000 or more. That is 48% below the $2,500 median across all AI builds we track.
How long does an AI browser extension take?
40% of posts expect the work done in under a month, 44% in one to three months and 16% over a longer stretch. Work expected to take under a month has a median of $200, against $500 for three to six months.
Why do estimates vary so much?
Fixed-price posts state a median of $250, while hourly posts work out at $4,000 on our estimate: 16 times as much. One likely reason is that fixed budgets tend to cover a small first step, while hourly posts describe sustained work. Scope matters most: how many sites it must work on and whether it needs accounts and billing move the price the most.
What hourly rate should I expect?
Most hourly posts offer $11 to $36 an hour, with a median top rate of $32. Agencies and in-house specialists usually charge more than the open freelance market.
What skills does this work need?
Posts most often ask for Google Chrome Extension, JavaScript, API and API Integration.
Do I need an expert?
Posts asking for expert-level talent have a median of $2,550, 5.1 times the $500 for intermediate talent. 33% of posts ask for experts.
Where do these numbers come from?
From 51 public job posts published between December 2025 and November 2026: 29 fixed budgets as stated and 22 hourly posts we costed from their rate, expected length and assumed hours. They are what buyers offered, not signed contract prices.
About this data
These figures come from 51 public job posts published between December 2025 and November 2026: 29 fixed budgets as stated, and 22 hourly posts costed from their rate, expected length and assumed hours. They show what buyers offered, not signed contract prices, and hourly figures assume the work runs its full length. Read the method
Cite this page. The AI Build Index. "AI browser extension: what it costs." Published by VIZIO AI. Updated 2026-11-04. https://aibuildindex.com/cost/chrome-extension-ai
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