Compare/Head to head

Braintrust vs Upwork

Same facts, side by side: starting price, free tier, MCP, API and what each one is actually built for.

Starting price

Braintrust

15% fee

Braintrust is a freelance talent marketplace plus an AI screening product. Employers pay a published 15% fee on talent payments, and talent pays nothing. It fits companies hiring contract engineers and specialists that want a transparent fee instead of a staffing agency markup.

Where Braintrust fits

  • Companies hiring contract engineers or designers
  • Teams wanting contract-to-hire flexibility
  • Employers that want a published fee
  • High-volume teams screening with AI voice interviews

Upwork

5% fee

Upwork is the biggest freelance marketplace, free to join with a 5% client fee on Basic. It now has an official MCP server, so recruiters can search talent, post jobs and review proposals from Claude or ChatGPT without opening the site.

Where Upwork fits

  • Recruiters and agencies hiring contract specialists fast
  • Teams that want to hire from Claude or ChatGPT
  • Small companies without an agency budget
  • Short projects and overflow work

At a glance

DetailBraintrustUpwork
Starting price15% fee5% fee
Free tier–No–No
MCP server–No✓Yes
Public API–No✓Yes
Listed underSourcing, EOR, AI interviewingSourcing, Job boards

Where they pull apart

Braintrust

Stands out: Braintrust publishes its 15% client fee, which is rare among vetted talent networks. The same company sells AIR, an AI voice interviewer that runs thousands of screens a day and syncs ranked results to Greenhouse, Lever, Workday, iCIMS and SmartRecruiters.

Watch out: The site now spans three products, including Nexus for operations automation, so the marketplace can be hard to find. The 15% fee also applies to direct hires and conversions within six months, and EOR services cost extra.

Not the right fit for

  • Buyers wanting a free trial period
  • Teams avoiding AI-led screening
  • Local on-site hourly hiring

Upwork

Stands out: Upwork is one of the first large hiring marketplaces with its own hosted MCP server. It covers the full client workflow (talent search, job posts, invites, proposals, milestones, messages) and drafts every write for you to confirm, while money only moves on upwork.com.

Watch out: Talent quality varies widely because anyone can join, so screening falls on you. Fees stack: the client marketplace fee, a contract initiation fee, and the freelancer service fee priced into rates. The MCP grants the full set of scopes when you connect.

Not the right fit for

  • Full-time permanent hiring
  • Teams that only want pre-vetted talent
  • Roles that need local on-site staff

Pros and cons

Braintrust

  • Published 15% client fee
  • No fees charged to talent
  • AI screening and EOR from one vendor
  • Same 15% fee applies to direct hires
  • AIR pricing only by quote
  • Mix of products can confuse buyers

Upwork

  • Free to join, fee only when you pay talent
  • Official hosted MCP server, free
  • Huge talent pool across every skill
  • Variable talent quality needs screening
  • Fees stack on both sides
  • MCP grants full account scopes

What each one costs

Braintrust

15% fee

On the Talent Marketplace, employers pay a 15% service fee on payments to talent, and talent pays no platform fee. Direct hires, and contractors converted to employees within six months, cost 15% of first-year base salary. AIR is priced by interview volume and quoted by sales, and EOR or W-2 payrolling costs extra. Confirm current terms on the vendor site.

Checked 26 Sep 2026

Upwork

5% fee

Upwork is free to join with no subscription. On the Basic plan, clients pay a 5% marketplace fee on payments to freelancers, or 3% for eligible US clients paying by bank account, plus a small contract initiation fee on new contracts. Business Plus raises the fee to 8% (bank) or 10% and adds premium support, reporting and pre-vetted talent. Enterprise is custom priced. Freelancers pay a separate service fee and buy Connects to submit proposals. The MCP server itself is free. Confirm current terms on the vendor site.

Checked 20 Oct 2026

Common questions

Is Braintrust cheaper than Upwork?
Upwork starts lower, at 5% fee against 15% fee for Braintrust. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try Braintrust or Upwork for free?
Neither carries a free tier on our listing.
Does Braintrust or Upwork have an MCP server?
Upwork ships a first party MCP server, so an AI assistant can work the product directly.

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Editorial listings, never paid rankings. Prices checked 26 Sep 2026. Confirm current terms on the vendor site. Spot an error?