AI Indexes
IT AI Index
Index › Data platform › Data catalogs › OpenMetadata vs DataHub
Data catalogs and governance · October 2026 Edition

OpenMetadata vs DataHub

Zero of fourteen models named OpenMetadata first on the direct prompt; one named DataHub. OpenMetadata was named by thirteen of the fourteen models and DataHub by twelve and OpenMetadata carries 27 labels and DataHub 36, so the shares are not directly comparable.

OpenMetadata

accepted challenger

Named in two categories this edition.

DataHub

accepted challenger

Named in two categories this edition.

First-choice share18%7%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate7%14%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#2#5A position in a field of 15; printed, not drawn.
Labels2736A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, OpenMetadata reading right to left. Rank and label count are printed, not drawn.Atlan was named alongside these two in thirteen of the fourteen direct answers. Atlan vs OpenMetadata · Atlan vs DataHub · OpenMetadata vs Secoda

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the data catalogs and governance page.

By framing

How many of the fourteen models made each the first choice, per way of asking, and how many argued against it.
OpenMetadataFirst choices, of fourteen modelsDataHub
Direct011 against DataHub
Paraphrase00
Comparative00
Budget-constrained103
Scale-constrained001 against OpenMetadata · 2 against DataHub
Negative001 against OpenMetadata · 2 against DataHub
Bars are first choices, 0 to 14 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to fourteen.

Across every category in the October 2026 Edition, OpenMetadata and DataHub were named in the same answer sixty-seven times, of the 94 answers naming OpenMetadata and the 101 naming DataHub. In those answers DataHub took the first choice one time and OpenMetadata sixteen.

Every model, every framing

The eighty-four answers behind the chart above, one cell each: where OpenMetadata and DataHub stood in it.
ModelDirectParaphraseComparativeBudget-constrainedScale-constrainedNegative
Claude Haiku 4.5
GPT-5.4 mini
Gemini 3.5 Flash
Perplexity Sonar
Grok 4.1 Fast
Mistral Small
DeepSeek V4 Flash
Llama 4 Maverick
Qwen 3.7 Flash
Kimi K2
GLM 4.7 FlashX
MiniMax M2.5
GPT-6 Luna
Muse Glimmer 30B
OpenMetadata DataHub first choice named as an alternative argued againstblank: not namedEach cell is one answer, OpenMetadata on the left and DataHub on the right.

The direct prompt

The plain question, one answer per model, grouped by where OpenMetadata and DataHub stood in it.

DataHub first, OpenMetadata not the choice

1 of 14 modelsOpenMetadata was named in the answer but not as the choice, or not at all.
GPT-5.4 miniDataHub alternatives: Alation, DataGalaxy

Neither was the first choice, one was named

3 of 14 modelsThe answer put something else first and named one of the two as an alternative.
DeepSeek V4 FlashSecoda alternatives: Atlan, DataHub
Qwen 3.7 FlashAtlan alternatives: AWS DataZone, DataHub, Google Dataplex, OvalEdge, Seceda
GPT-6 LunaAtlan alternatives: Microsoft Purview, OpenMetadata, Secoda

Neither was named

10 of 14 modelsThe answer made no first choice from these two in this category.
Claude Haiku 4.5Atlan alternatives: Alation, OvalEdge
Gemini 3.5 FlashSelect Star alternatives: Atlan, Coalesce Catalog, OvalEdge, Secoda
Perplexity SonarAtlan alternatives: Alation, OvalEdge, Select Star
Grok 4.1 FastAtlan alternatives: Alation, OvalEdge, Secoda
Mistral SmallAtlan, OvalEdge
Llama 4 MaverickAtlan
Kimi K2Secoda alternatives: Atlan, OvalEdge, Select Star
GLM 4.7 FlashXAtlan, Secoda, Select Star alternatives: Informatica Intelligent Data Management Cloud, OvalEdge, data.world
MiniMax M2.5Atlan, Secoda alternatives: Alation, Microsoft Purview
Muse Glimmer 30BAtlan alternatives: Alation, OvalEdge

Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.

By buyer segment

The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
OpenMetadata leads by twelve points.
OpenMetadata18%#1 of 16
DataHub5%#7 of 16
The full small business standing →
Mid-marketThe figures above
OpenMetadata leads by eleven points.
OpenMetadata18%#2 of 15
DataHub7%#5 of 15
The full mid-market standing →
Enterprise
OpenMetadata leads by four points.
OpenMetadata4%#5 of 11
DataHub0%#8 of 11
The full enterprise standing →

What the models said about OpenMetadata

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Five of six in this category shown.

“While open source options like OpenMetadata and DataHub are credible, they require substantial in-house engineering expertise to deploy, maintain, and scale.” Mistral Small · negative prompt · soft negative
“Only choose this if you have a dedicated data platform engineer who has the bandwidth to manage and upgrade the infrastructure.” Gemini 3.5 Flash · scale prompt · soft negative
“OpenMetadata is generally the better starting point due to its simpler stack and faster time-to-value.” MiniMax M2.5 · budget prompt · first choice
“OpenMetadata (Best Overall Open Source) ... this is widely considered the best open-source data catalog” GLM 4.7 FlashX · budget prompt · first choice
“The Best All-Around (Open Source): OpenMetadata ... this is currently the top contender.” Qwen 3.7 Flash · budget prompt · first choice

What the models said about DataHub

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.

“Avoid for Mid-Market: ... open-source like DataHub/Amundsen (free but needs engineering overhead)” Grok 4.1 Fast · direct prompt · hard negative
“Only choose this if you have a dedicated data platform engineer who has the bandwidth to manage and upgrade the infrastructure.” Gemini 3.5 Flash · scale prompt · soft negative
“While open source options like OpenMetadata and DataHub are credible, they require substantial in-house engineering expertise” Mistral Small · negative prompt · soft negative
“likely to be an open-source tool such as Amundsen or DataHub, which are suitable for on-premise environments” Llama 4 Maverick · budget prompt · first choice
“If you have some technical resources, OpenMetadata or DataHub are the best free options.” Mistral Small · budget prompt · first choice
“Best overall low-budget choice: DataHub” GPT-5.4 mini · budget prompt · first choice
Also compared

Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.