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GoldAPI.io vs MetalpriceAPI

If a shortlist for a metals-focused pricing API already has two names on it, they're probably GoldAPI.io and MetalpriceAPI: both frequently recommended in the same developer threads, both close in entry price, and both light on the details that would let a developer tell them apart at a glance.

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At a glance

FeatureGoldAPI.ioMetalpriceAPI
Pricing
Cheapest paid plan (MetalpriceAPI billed yearly)$4.99/mo$5/mo (Essential, billed yearly)
Number of paid tiers2 published tiersSeven, $5–$132/mo, billed yearly
Production-tier plan$129/mo$74/mo (Business, billed yearly)
Overage policyAuto-billsNot stated in their public docs
Coverage
Currencies supported160+150+
LBMA AM/PM fix redistribution rightsYesNot verifiable from public docs
Metals catalogGold + silver at parity, no copperGold, silver, platinum (per their FAQ)
Historical daily depth20+ yearsNot stated in their public docs
Developer experience
Commercial use on paid plansYes, all paid plansNot stated in their public docs
WebSocket streamingNot stated in their public docsNo, stated explicitly
TypeScript / Python SDKCommunity-maintainedNot stated in their public docs

Pricing: close at entry, further apart in structure

The two are within a dollar of each other at the bottom, $4.99/mo for GoldAPI.io against $5/mo for MetalpriceAPI's Essential tier. What differs is the shape above that: MetalpriceAPI ladders seven paid tiers up to $132/mo at Business Plus, billed yearly, while GoldAPI.io publishes two, topping out at $129/mo for its production plan. A team that wants small, incremental upgrades gets more of them from MetalpriceAPI's ladder.

The LBMA question

GoldAPI.io states outright that it holds LBMA AM/PM fix redistribution rights, a specific, checkable claim about its data lineage. MetalpriceAPI makes no equivalent public claim, and our own research treated that gap as unverifiable rather than assuming MetalpriceAPI lacks a comparable relationship. Anyone who needs LBMA provenance specifically should confirm directly with MetalpriceAPI rather than infer an answer from silence.

Coverage and history

MetalpriceAPI names platinum alongside gold and silver in its FAQ, one metal GoldAPI.io's page doesn't claim. GoldAPI.io counters with a stated 20+ years of historical depth, a figure MetalpriceAPI's page doesn't publish an equivalent for. Currency counts sit close, 160+ against 150+, not far enough apart to matter on its own.

What neither one documents

Commercial-use terms, WebSocket support, and SDK maintenance status are each documented by one provider and silent on the other's page. GoldAPI.io is explicit about commercial use (permitted on all paid plans) and lists community SDKs; MetalpriceAPI is explicit about not offering WebSocket streaming. Where a row above reads not stated, that's the actual state of the published record, not an oversight in this comparison.

Frequently asked questions

Which is cheaper at entry?

GoldAPI.io, by one cent: $4.99/mo against MetalpriceAPI's $5/mo Essential tier, billed yearly. The real difference is in tier count. MetalpriceAPI spreads seven paid steps between $5/mo and $132/mo, billed yearly; GoldAPI.io publishes two.

Does MetalpriceAPI also hold LBMA fixing rights, the way GoldAPI.io claims to?

That's not established from its public pages. GoldAPI.io states it holds LBMA AM/PM fix redistribution rights. Our own research into MetalpriceAPI dropped an equivalent LBMA claim for that provider as unverifiable, so treat it as unconfirmed rather than a confirmed absence.

Which one bills further past a free plan?

Both are paid-plan-first, so a further-past-free framing doesn't quite fit either. GoldAPI.io's cheapest listed plan is $4.99/mo; MetalpriceAPI has an actual Free tier at $0 (100 calls/month), then steps up from there.

Which has more currencies?

GoldAPI.io, slightly: 160+ against MetalpriceAPI's 150+. Neither gap is large enough to be a deciding factor by itself.

Do either publish commercial-use terms clearly?

GoldAPI.io does: all its paid plans, starting at $4.99/mo, permit commercial use per its pricing page. MetalpriceAPI's commercial-use terms aren't detailed in the source we reviewed, so confirm directly before building a paid product on top of it.

Is either one shipping WebSocket streaming?

MetalpriceAPI states plainly that it isn't. GoldAPI.io's page doesn't address streaming either way, which is a gap in the public record rather than a confirmed no.

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