AI Visibility Rankings · AI

RAG platforms: AI search visibility ranking (2026)

By monitoraeo Last updated July 18, 2026 Refreshed every 30 days

How AI search engines rank rag platforms by visibility and citations. 20 brands measured monthly across Google AI Mode: which brands the AI names in answers, which domains it cites as sources, and how the leaders compare. RAG platforms used to ingest data, retrieve relevant context, and power grounded question-answering and enterprise AI assistants. Composite score: 70% visibility (% of AI answers naming the brand) + 30% citation rate (% citing the brand's domain). Full methodology →

Avg visibility across category

Avg citation rate

20/20

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When asking AI engines about RAG platforms, the name that consistently stands out is LangChain. It leads the industry with 12.5% visibility, frequently mentioned alongside other prominent brands like LlamaIndex and Vectara. If you're evaluating options, these names are likely your top contenders according to AI guidance.

The rankings are influenced heavily by the sources the AI engines pull from. Major cited domains include medium.com, techsy.io, and braintrust.dev. Many of these are aggregator or review sites, which amass articles and opinions from various experts. This means the rankings reflect an aggregated sentiment rather than isolated opinions.

For a buyer, understanding these rankings through AI lens suggests considering platforms with strong third-party validation and recent reviews. If AI engines value sources with timely and authoritative insights, choosing a brand with reputable backing and current evaluations could be advantageous. It's worth examining how each brand builds its presence across trusted online forums or sites.

At a glance

Category leader LangChain 12% visibility · named in 1 of 8 AI answers

Most cited brand Vectara 12% citation rate · the AI's most-trusted source brand in rag platforms

Top cited domain medium.com Referenced by AI across the rag platforms query set — the highest-leverage PR target in this category

Visibility spread 12pp Gap between top and bottom of the ranking · 18 brands at 0% (invisible to the AI)

What we observed in this category

LangChain and LlamaIndex share the top two positions with identical visibility scores of 12.5 percent and composite scores of 8.8, placing them well above the category average visibility of 1.2 percent. Every other brand in the top five sits at 0.0 percent visibility. This gap matters because LangChain and LlamaIndex are being named in AI-generated overviews while the rest of the field is largely absent from those narratives, creating a two-tier recognition structure at the very top of the category.

Vectara, Glean, Weaviate, and Google Vertex AI Search each hold a citation rate of 12.5 percent despite having zero visibility, a pattern that shows AI Mode is referencing these brands as sources without actively featuring them in direct answers. This named-versus-trusted split is significant: citation without visibility suggests these brands appear in supporting links or footnotes rather than primary descriptions. LangChain and LlamaIndex show the opposite pattern, high visibility but zero citation, meaning they are described but not linked.

All ten tracked brands list Google AI Mode as their top engine, confirming that this single engine is the dominant surface driving both visibility and citation in the RAG platforms category. The top cited sources include medium.com, aimultiple.com, and braintrust.dev, none of which are brand-owned domains. This indicates Google AI Mode is anchoring its RAG platform responses on third-party editorial and aggregator content rather than on vendor documentation or official brand pages.

Movers & shakers since last refresh

Biggest visibility fallers

LlamaIndex 25% → 12% · rank #1 → #2
-12pp
Vectara 12% → 0% · rank #4 → #3
-12pp
Pinecone 12% → 0% · rank #3 → #7
-12pp

The ranking

#	Brand	Visibility	Citation	Top engine
1	LangChain langchain.com	12%	0%	Google AI Mode
LangChain leads with 12.5 percent visibility and a composite score of 8.8, ten times the category average visibility, but holds zero citation share across tracked queries.
2	LlamaIndex llamaindex.ai	12%	0%	Google AI Mode
LlamaIndex matches LangChain on visibility at 12.5 percent but has fallen from rank one, recording a visibility delta of negative 12.5 points versus the prior period.
3	Vectara vectara.com	0%	12%	Google AI Mode
Vectara dropped to zero visibility from 12.5 percent previously, yet gained a 12.5 percent citation rate, shifting entirely from named brand to cited source.
4	Glean glean.com	0%	12%	Google AI Mode
Glean sits at zero visibility but 12.5 percent citation, matching Vectara and Weaviate in a cluster of citation-only brands with identical composite scores of 3.8.
5	Weaviate weaviate.io	0%	12%	Google AI Mode
Weaviate shares the same 0.0 visibility and 12.5 percent citation profile as Glean and Vectara, placing all three well behind LangChain and LlamaIndex on composite score.
6	Google Vertex AI Search cloud.google.com	0%	12%	Google AI Mode
7	Pinecone pinecone.io	0%	0%	Google AI Mode
8	Qdrant qdrant.tech	0%	0%	Google AI Mode
9	Haystack deepset.ai	0%	0%	Google AI Mode
10	Cohere cohere.com	0%	0%	Google AI Mode
11	Flowise flowiseai.com	0%	0%	Google AI Mode
12	MongoDB Atlas mongodb.com	0%	0%	Google AI Mode
13	Elastic elastic.co	0%	0%	Google AI Mode
14	Dify dify.ai	0%	0%	Google AI Mode
15	Unstructured unstructured.io	0%	0%	Google AI Mode
16	Ragie ragie.ai	0%	0%	Google AI Mode
17	Pathway pathway.com	0%	0%	Google AI Mode
18	Azure AI Search azure.microsoft.com	0%	0%	Google AI Mode
19	Amazon Kendra aws.amazon.com	0%	0%	Google AI Mode
20	Databricks databricks.com	0%	0%	Google AI Mode

Sources AI engines trust in this category

Across the 8 buyer-intent queries we ran on rag platforms, these are the domains Google AI Mode cited most often. If you're not on this list — or if your competitors are — that's a concrete PR / linkbuilding target.

medium.comtechsy.iobraintrust.devpecollective.comaimultiple.commeilisearch.comyoutube.comaimprosoft.com

How to read this ranking

Four things worth knowing before you act on the numbers above. These are the same definitions across every industry page — for category-specific observations, see the What we observed section above (where available) and the per-brand insights inline in the ranking.

Visibility = being named

A brand's visibility % is the share of AI answers that mention it by name in the response prose. This is who AI engines actively recommend to the buyer. More on visibility →

Citation rate = being trusted

Citation rate is the share of AI answers that include the brand's domain as a clickable source link. This is what the AI treats as authoritative evidence, different from being named. More on citation rate →

Top engine differs by brand

The "top engine" column shows which AI surface each brand performs best on. Big gaps between a brand's score across engines usually points to specific content or schema gaps. How AI engines pick sources →

Rankings move month to month

AI engines re-crawl and re-rank on shorter cycles than classical search. We re-audit every brand on this list at least every 30 days and refresh this page automatically. How AI search ranking works →

Get your own rag platforms brand audited

The brands above were curated from public market-leader lists. Want the same measurement against your own brand — including the queries you appear on, which competitors get named instead, and a prioritised fix list? Run a free preview.

Audit your rag platforms brand → Browse all rankings Methodology →

Frequently asked about rag platforms AI visibility

Who leads AI visibility in RAG platforms?

LangChain and LlamaIndex jointly lead with 12.5 percent visibility each and composite scores of 8.8, far above every other tracked brand in the category.

What is the difference between visibility and citation in this category?

LangChain and LlamaIndex have high visibility but zero citation, while Vectara, Glean, Weaviate, and Google Vertex AI Search have zero visibility but 12.5 percent citation each, showing two distinct modes of AI presence.

Which sources does Google AI Mode cite most for RAG platform research?

The top cited sources are third-party domains including medium.com, aimultiple.com, braintrust.dev, and techsy.io, with no brand-owned domains appearing in the top cited sources list.

Which brands have lost the most AI visibility recently in RAG platforms?

LlamaIndex, Vectara, and Pinecone each recorded a visibility delta of negative 12.5 percentage points in the most recent period, making them the three biggest visibility fallers tracked.

How concentrated is AI visibility across the RAG platforms category?

Visibility is highly concentrated, with only two of the twenty tracked brands holding any visibility at all, and the category average sitting at just 1.2 percent.

Does Google Vertex AI Search benefit from being a Google product in Google AI Mode visibility?

The data shows Google Vertex AI Search holds zero visibility and only 12.5 percent citation, placing it in the same tier as Glean and Weaviate with a composite score of 3.8.