How much does Seldon cost?

Seldon publishes 2 tiers, from Free for Seldon Core up to Free for Seldon Deploy. The entry tier costs nothing.

Does Seldon have a free plan?

Yes. The Seldon Core tier costs nothing and covers open source, kubernetes deployment, model serving.

What is the difference between Seldon Core and Seldon Deploy on Seldon?

Seldon Deploy costs Free against Free, and adds enterprise features, gui, monitoring.

Which machine learning tools can I use without paying?

7 of the 8 machine learning tools listed alongside Seldon have a free tier: ClearML, Langwatch, Haystack, Semantic Kernel, H2O.ai.

Does Seldon charge per user?

The record carries a price and a billing period for each of its 2 tiers, but not the unit that price is charged in. Per-seat and flat-rate billing look identical in this data, so check the vendor's page before budgeting for a team.

Are these Seldon prices current?

They are what the catalogue entry holds, refreshed when the entry is. Vendors change pricing without notice and nobody at Softwr re-verifies each tier by hand, so treat this as a structured summary and the vendor's own pricing page as the authority.

What should I compare Seldon against before paying?

The closest machine learning tools in this directory are ClearML, Langwatch, Haystack, Semantic Kernel. Each has a side-by-side comparison with Seldon covering price, platforms and features.

Machine Learning · pricing

Seldon pricing

Seldon publishes 2 tiers. Below is each one, what it adds over the tier beneath it, and where the ladder stops being worth climbing for most people.

As of 30 August 2026, Seldon pricing is free across 2 published tiers. Figures are the vendor's list prices as recorded on this page's last check; the vendor's site is the final word.

Entry price: Free
Model: Freemium
Tiers: 2
Free tier: Yes

Seldon plans, side by side

Every published tier in ascending order of price, with the number of features each one lists. An absence here means the record does not itemise it, not that the tier lacks it.

Seldon pricing tiers
Plan	Price	Features listed	Step up from the tier below
Seldon Core	Free	3	Entry tier
Seldon Deploy	Free	3	+$0/month, 3 more features

What each tier adds

The set difference between each tier's feature list and the one beneath it. Where a tier lists nothing new, the vendor has either stopped repeating the inherited list or the tier raises limits rather than adding capability, the record does not distinguish the two, so this page does not either.

Seldon Core

Free

The entry tier. It covers open source, kubernetes deployment, model serving.

Seldon Deploy

Free

Over Seldon Core, this tier adds:

Enterprise features
GUI
Monitoring

Where Seldon stops being free

Seldon Core, Free

Open source
Kubernetes deployment
Model serving

No paid tier on record

Seldon lists a free tier and no priced tier above it in the record we hold.

What the product covers

The full Seldon feature record, grouped as the catalogue groups it. This is the product as a whole; the record does not map every feature onto a specific tier.

Other

Kubernetes custom resources
Inference graphs
Traffic strategies
Open Inference Protocol
Alibi Explain
Alibi Detect
Kafka-backed pipelines in v2
Commercial control plane

People bring Seldon in for serving an ensemble or a multi-stage inference path as one versioned deployment rather than as a chain of separate services, running genuine production experiments where a share of live traffic goes to a candidate model and the results are compared, regulated environments needing explanations and drift monitoring attached to the served model rather than bolted on later, organisations with an established kubernetes platform team who want serving expressed as manifests under existing deployment controls. If that is not the job you are buying for, the alternatives to Seldon are worth a look before you commit to a tier.

How that compares in Machine Learning

Too few machine learning tools in this directory publish a starting price to quote a meaningful median, so the table below is a like-for-like list rather than a ranking.

Seldon entry price against other Machine Learning tools
Tool	Entry price	Model	Rated	Head to head
Seldon (this page)	Free	freemium	-
ClearML	Free	Open-source self-hosted, with paid hosted and enterprise tiers	-	vs Seldon
Langwatch	Free, then €29/month	Tiered subscription with usage-based overage charges	-	vs Seldon
Haystack	Free	Open-source with optional paid enterprise support	-	vs Seldon
Semantic Kernel	Free	Open source, no pricing	-	vs Seldon
Fal AI	$1.89/hour	usage-based	-	vs Seldon
H2O.ai	Free	freemium	-	vs Seldon

Ratings are aggregated from third-party sources and imported with each catalogue entry, they are not reviews hosted on Softwr. How each figure is used is set out on the Seldon badges page.

Before you pay for Seldon

Three things this page cannot tell you, and all three change the bill. The record carries a price and a billing period but not the unit - per-seat and flat-rate pricing are indistinguishable in this data, so a five-person team may be looking at five times the figure above. It carries no annual rate, so any discount for paying yearly is not something this page can quote. And it carries no trial length.

What it can tell you is the shape of the ladder: 2 tiers between Free and Free, with the jump itemised above. Because there is a free tier, the cheapest way to answer the rest is to use it before paying anything.

Seldon runs on linux, and is published by Seldon Technologies of London, United Kingdom. The full record is on the Seldon review, and the rest of the category is under best machine learning tools.

Seldon pricing on the vendor's own site

Seldon pricing questions

How much does Seldon cost?: Seldon publishes 2 tiers, from Free for Seldon Core up to Free for Seldon Deploy. The entry tier costs nothing.
Does Seldon have a free plan?: Yes. The Seldon Core tier costs nothing and covers open source, kubernetes deployment, model serving.
What is the difference between Seldon Core and Seldon Deploy on Seldon?: Seldon Deploy costs Free against Free, and adds enterprise features, gui, monitoring.
Which machine learning tools can I use without paying?: 7 of the 8 machine learning tools listed alongside Seldon have a free tier: ClearML, Langwatch, Haystack, Semantic Kernel, H2O.ai.
What am I actually paying for with Seldon?: The record lists 8 features across 1 area: other. In practice it is brought in for serving an ensemble or a multi-stage inference path as one versioned deployment rather than as a chain of separate services, running genuine production experiments where a share of live traffic goes to a candidate model and the results are compared, regulated environments needing explanations and drift monitoring attached to the served model rather than bolted on later.
Does Seldon charge per user?: The record carries a price and a billing period for each of its 2 tiers, but not the unit that price is charged in. Per-seat and flat-rate billing look identical in this data, so check the vendor's page before budgeting for a team.
Are these Seldon prices current?: They are what the catalogue entry holds, refreshed when the entry is. Vendors change pricing without notice and nobody at Softwr re-verifies each tier by hand, so treat this as a structured summary and the vendor's own pricing page as the authority.
What should I compare Seldon against before paying?: The closest machine learning tools in this directory are ClearML, Langwatch, Haystack, Semantic Kernel. Each has a side-by-side comparison with Seldon covering price, platforms and features.