CNC Machining Services Comparison 2026: Fictiv vs Xometry vs GreatLight

• 1
  CNC Machining Services Comparison 2026 at a Glance
• 2
  What Each Model Actually Does
• 3
  Which Parts Suit Which Supplier
• 4
  Tolerance, Inspection and Material Reality
• 5
  Where the Money Actually Goes
• 6
  Certifications and Paperwork
• 7
  Lead Time and Communication
• 8
  When to Choose Which

Fictiv runs a managed network. You send a design, Fictiv vets the shop, holds the quality conversation and takes contract responsibility for the delivery. That is useful when your team has no one to chase suppliers. The trade-off is a layer between you and the machinist. When a feature is hard to hold, you hear about it after review, not from the person standing at the machine.

Xometry is the marketplace model. Upload a file, get an automated price in minutes, and the order routes to whichever shop accepts it. Price discovery is genuinely fast, and for one-off brackets in 6061 that is often all you need. The same speed means the shop is chosen by capacity and rate, not by familiarity with your drawing. The machine that cuts part one may not cut part fifty.

GreatLight is factory-direct. Three wholly-owned plants in Dongguan and Singapore, 127 high-precision CNC machines, and the quoting engineer is the same team that runs the job. There is no routing step and no partner shop to coordinate. The cost is that you talk to one supplier instead of a network, so overflow capacity is not unlimited.

None of these models is wrong. They answer different questions. Do you want someone to manage suppliers, do you want the cheapest fast quote, or do you want the shop that will run the parts again next year with the same setup? Decide that first and the comparison gets simple.

For a single prototype bracket with generous tolerances, a marketplace quote wins on speed. Upload, pay, receive. The part is probably fine, and you saved a week of email. This is where Xometry is strong and where paying for a managed layer adds little.

For a program where several suppliers must be coordinated under one PO, Fictiv's managed model earns its margin. Engineering review, supplier vetting and delivery responsibility are real work. If your team is two people and the schedule is tight, that service has value.

For parts with tight tolerances, thin walls or callouts that need a specific setup, factory-direct is usually the lower-risk path. A 5-axis feature held to ±0.005 mm depends on the fixture and the operator, not on the platform. Someone has to answer the phone when the first article is 0.01 mm out.

Where it gets uncomfortable is the mixed order. Ten simple covers plus two difficult manifolds. A marketplace will quote all twelve at one rate and route them to whoever accepts. A factory-direct shop will quote the covers and the manifolds differently, because the setups are different. That difference is information, not a penalty.

Tolerance is where comparison tables usually get vague. A platform can advertise a capability range because the network contains shops at both ends of it. What matters is which shop your part lands at, and whether the quote you accepted reflects the tolerance you need.

GreatLight machines to ±0.005 mm and inspects 100% of parts before shipment. That covers raw material check, in-process monitoring and final inspection, with reports on request. A shop running 16 simultaneous 5-axis centers and 12 four-axis mills can hold position on complex geometry rather than re-fixturing a 3-axis machine four times.

Materials set the floor on what is realistic. Aluminum 6061, 7075 and 2024 cut predictably. 17-4PH stainless and Inconel move during machining and need stress relief thinking before the first cut. Titanium TC4 and magnesium AZ31B need different feeds again. A quote that does not ask which alloy you mean is a quote with an assumption inside it.

Size matters too. GreatLight handles up to 4,000 mm, with large travels of 4,000 × 400 × 150 mm and a Ø400 mm rotary table. Marketplace routing can handle large parts, but the number of shops that will take them shrinks fast, and price swings with it.

Unit price is the number everyone compares, and it is the least stable one. A marketplace quote reflects the rate of whichever shop matches your file. If that shop's rate changes next quarter, your repeat order price changes with it. A factory-direct quote reflects a known machine, a known setup and a known cycle time.

Setup dominates small quantities. Fixtures, first article and programming are fixed costs spread across the run. At one to ten parts, the setup is most of the bill. At 10,000 parts, cycle time and material yield take over. GreatLight quotes from one prototype to 10,000+ part runs with no minimum order quantity, so the same shop handles both ends.

Finishing is a separate line item that platforms often estimate. Anodizing, hardcoat, electroless nickel, powder coating and laser marking all add handling steps. Laser marking has a 1.5 mm minimum character height, which matters if your part number is long and the surface is small.

Freight and customs belong in the comparison. A lower unit price from a distant shop can lose to a closer one once air freight and duty land. Run the landed number before you sign, not after.

Certificates are not decoration. They decide which programs will even let you bid. ISO 9001:2015 covers the general quality system. IATF 16949:2016 is the automotive gate. ISO 13485:2016 applies to medical device work. ISO 27001:2022 covers information security, which matters when you are uploading unreleased CAD.

GreatLight holds all four. If your program is automotive or medical, a supplier without the matching certificate creates an audit problem for you, regardless of how good the parts look. Ask for the certificate scope, not just the logo.

Inspection documentation is the other half. Reports on request, with dimensional data tied to the drawing, are what your quality team needs to close a first article. A shop that inspects but cannot produce the report leaves you doing the paperwork.

Confidentiality runs alongside this. Uploads are secure and confidential, and an NDA is available on request. If the part is unreleased, settle that before files move, not after.

Quoting speed and production speed are different things. An instant automated quote tells you nothing about when the part ships. A 12-hour quote with free DFM analysis tells you what is wrong with the design before you commit, which is usually worth more than the hours saved on the quote itself.

GreatLight starts production within 24 hours of PO and ships parts in 3–5 days. Historical late-delivery probability is below 2%. For repeat work with a locked setup, that is the number that keeps a build schedule intact.

Communication style differs by model too. On a marketplace, your question goes to a support queue and then to a shop you have not met. With factory-direct, it goes to the engineer who quoted the job. That matters most on the second order, when the small change has to be understood quickly.

Judgment call. If your schedule is firm and the geometry is difficult, pick the supplier you can call. If the schedule is loose and the geometry is simple, pick the one with the fastest quote.

Choose a marketplace when you need price discovery across many simple parts, fast. Choose a managed network when you want one contract and no supplier coordination. Choose factory-direct when tolerance, repeatability or certification scope is the deciding factor.

The mix is common. Many teams price simple parts through a platform and place the difficult ones with a factory. There is nothing wrong with that. What hurts is sending a ±0.005 mm part to a route chosen on unit price and discovering the issue at first article.

For 2026, the practical question is not which platform is best. It is which model matches the risk in your drawing. Write down the tightest tolerance, the certification your customer demands and the date you must ship. Those three lines usually pick the supplier for you.