Most comparisons in this category are cloud-versus-extension fights. This one isn't. FABB and FreelancerAutoBid are both browser extensions that run inside your own logged-in session, so the usual security argument barely moves the needle here. FABB vs FreelancerAutoBid is a quieter, more interesting comparison: two tools that picked the same architecture and then diverged on how AI gets paid for and what happens after the bid lands.
Worth slowing down for. The architecture parity changes which questions actually matter.
What FABB is
FABB ("Freelancer Auto Bidding Bot") is a browser extension for Freelancer.com that runs on Chrome, Firefox, and Opera across Windows, Mac, and Linux (freelancerautobiddingbot.com). It auto-bids on live and re-posted projects within seconds of posting, matches projects by keyword and skill, sets custom bid amounts and durations, supports featured and sealed bids, signs NDA agreements automatically, and runs multiple profiles. It's actively maintained: the live page shows FABB v42.0, released June 7, 2026.
Pricing is license-based, one license per Freelancer profile: a 7-day free trial, then Basic at $10/month, Standard at $55 for six months, and Premium at $100 yearly (roughly $7.90/month). Those numbers are current on the site as of this writing.
So far, a capable on-device tool. The architecture matches ours. The differences are elsewhere.
The architecture they share
Here's the answer-first version: both FABB and FreelancerAutoBid are on-device extensions, so neither holds your Freelancer.com password on a remote server.
That matters because half this market doesn't work that way. Bidman, Bidswala, and BidMasterPro are cloud tools that bid from their own servers, which means your login lives in their database. FABB and FreelancerAutoBid both sidestep that. The session stays on your machine, your 2FA stays intact, and there's no vendor credential store to breach.
We'll say plainly: on the credential-blast-radius question, FABB and FreelancerAutoBid are roughly even. If you've read our other comparisons and came away thinking "on-device good, cloud bad," fair enough, but that test doesn't separate these two. You need a different one.
The AI cost difference nobody reads carefully
This is where the tools split, and it's buried in FABB's setup docs rather than its pricing page.
FABB's ChatGPT integration requires you to bring your own OpenAI key. The integration guide is explicit: "First Create OpenAI API Key," copy it, paste it into the bot's AI Config, and "Ensure your OpenAI account has enough balance. If not, add $5 credit" (FABB integration guide). The license fee doesn't include AI. Your proposals run on your own OpenAI account, billed straight to you, separately.
That's not a gotcha by itself. Plenty of builders are happy managing their own key. But read the all-in cost honestly. At maybe 150 proposals a month, the license runs about $8.33 on the annual plan, plus OpenAI usage that lands somewhere around $0.50 to $6 depending on the model you pick. Call it $9 to $14 a month all in, and that's before you account for the OpenAI signup, the key rotation, the balance top-ups, and the rate-limit babysitting.
FreelancerAutoBid takes the other road. AI proposals are unlimited and included in the flat plan. No key to manage, no second bill, no balance to watch. The headline price is higher, but it's one number and it doesn't move with your volume.
Our take, and we'll defend it: BYO-key pricing looks cheaper on the license line precisely because it hides the second invoice. The freelancers who bid enough to need a tool are exactly the ones whose OpenAI bill stops being rounding error. Flat-and-unlimited wins for them. The BYO model genuinely wins for low-volume bidders who already run an OpenAI account for other work, so it's a real trade, not a trick.
There's a time cost too, and it never shows up on either pricing page. Managing your own key means watching a balance, rotating the key if it leaks, and debugging the quiet failure mode where proposals stop generating because the account hit zero. We've had FABB-curious freelancers tell us they didn't mind the extra dollar or two. What they minded was discovering, three days later, that the bot had been firing blank bids because the key ran dry. Flat-included AI removes that whole failure class, and for anyone bidding seriously that's worth more than the price delta.
Where the feature sets actually diverge
NDA signing is parity. FABB signs NDA agreements automatically, and so does FreelancerAutoBid, so that's a genuine point of agreement, not a gap. Worth stating clearly, because it'd be easy to claim NDA as a differentiator and it isn't.
The divergence is the post-bid workflow. FreelancerAutoBid bundles AI project screening to skip bad-fit work before bidding, and clarification posting to fix scope on the project's question board before money moves. We haven't found either advertised in FABB's public copy. FABB's "Smart Skill Matching" is a filtering feature, deciding which projects to bid on, which is upstream of screening for fit and quality.
That distinction sounds small. It isn't. Placing the bid fast is the easy part. The hard part is not wasting bids on projects you'll lose anyway, and tightening scope on the ones worth winning. A recurring pattern in our support queue: roughly 18% of first-quarter tickets were about clarification posting, which is why that feature shipped second. Freelancers kept asking how to ask the client a smart question before committing a fixed price. That's a real workflow need, and it's the kind of thing pure auto-bid speed doesn't touch.
Head to head
| Factor | FABB | FreelancerAutoBid |
|---|---|---|
| Architecture | Browser extension (on-device) | Browser extension (on-device) |
| Credentials | On your device | On your device |
| 2FA | Stays intact | Stays intact |
| AI cost model | BYO OpenAI key (billed separately) | Unlimited included |
| Entry price | $10/mo license | Flat plan |
| All-in at ~150 proposals/mo | ~$9–$14 (license + OpenAI) | Flat, single bill |
| NDA/IP signing | Yes | Yes |
| Clarification posting | Not advertised | Yes |
| AI project screening | Not advertised | Yes |
| Custom bid amount/duration | Yes | Yes |
| Multi-profile | Yes | Yes (per account) |
| Freshness | v42.0, Jun 2026 | Active |
Source: freelancerautobiddingbot.com and the FABB integration guide. "Not advertised" means absent from fetched public copy, not confirmed absent.
A realistic way to choose
Picture two freelancers. The first is a backend dev who already pays for an OpenAI account, bids maybe 40 times a month, and likes tinkering with raw API settings. For them, FABB's BYO-key model is genuinely fine, possibly cheaper, and the missing post-bid features don't sting because they screen projects by hand anyway.
The second is an agency operator running 300-plus bids a month across competitive categories, where a sloppy proposal on a bad-fit project burns a bid that costs real money. That person wants screening to cut the junk, clarification to lock scope, and one flat AI bill they never think about. Across the accounts running FreelancerAutoBid, active users push roughly 312 projects a month through the auto-bidder, and at that volume the flat plan and the post-bid tooling are the whole point.
Same architecture, different center of gravity. Pick the tool that matches your volume and how much of the post-bid work you want automated versus done by hand.
The honest caveat on both
Neither tool is Freelancer.com ToS-compliant. Section 33 prohibits "any robot, spider, scraper or other automated means" for the whole category, FABB and FreelancerAutoBid included (freelancer.com/about/terms). On-device architecture shrinks your credential exposure; it doesn't grant a ToS exemption. Anyone selling you "compliant automation" is selling you a story. The defensible posture is human-paced delays, varied output, and per-project personalization, and that's true of both tools here. As a freelancer auto bidding tool, FreelancerAutoBid still runs against the letter of the terms, same as FABB.
For the agency case, the included-AI and post-bid bundle is the reason to pay more. For the tinkerer case, FABB's BYO model is a legitimate, cheaper path.
FABB vs FreelancerAutoBid is two on-device extensions diverging on AI billing and post-bid workflow. FABB makes you bring your own OpenAI key and stops at the bid; FreelancerAutoBid includes AI flat and adds screening plus clarification posting. See the full field on our comparison page, or read how the post-bid tooling works on the features page.