LangChain vs RAGFlow:Which is more popular?
In September 2026, LangChain had more branded searches than RAGFlow among rag platforms worldwide. LangChain had about 246,000 branded searches, while RAGFlow had 14,800. LangChain made up 43% of all rag platform searches we track, and RAGFlow accounted for 2.6%. When we asked ChatGPT and Google AI Overviews about rag platforms, both LangChain and RAGFlow appeared in all five answers. LangChain was mentioned before RAGFlow in every answer.
Who do people search for more?
LangChain, about 17 searches for every 1 for RAGFlow
Who does AI mention more?
Both are mentioned in every answer we collected.
Who does AI recommend more?
LangChain, named ahead of RAGFlow in every answer
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Top rag platforms in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, both LangChain and RAGFlow showed up in all five answers. LangChain was listed before RAGFlow in every answer.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
LlamaIndex1st- LangChain2nd
- LangGraph3rd
Haystack4th- RAGFlow5th
- Dify6th
Vectara7th- Azure AI Search8th
- LlamaCloud9th
Ragie–
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- LangChain5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- LlamaIndex5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- RAGFlow5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Haystack5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- LangGraph4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Dify2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Azure AI Search2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Vectara2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- LlamaCloud2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Ragie0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about rag platforms
5 answers
Asked ChatGPT
“Which RAG platform should I use?”
Asked ChatGPT
“What are the best RAG platforms?”
Asked ChatGPT
“What's the best RAG platform for a development team?”
Searched Google, AI Overview
“rag platforms”
Searched Google, AI Overview
“rag software”
Not named in any answer:
Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.
Is LangChain or RAGFlow more popular in search?
This chart shows how often people search Google for LangChain and RAGFlow by name. Each line represents a brand's share of searches for all ten rag platforms we track, month by month, from English-language searches worldwide.
Share of searches by month for LangChain, RAGFlow. The figures are in the table below the chart.
View monthly share of searches table
| Month | LangChain | LangGraph | Dify | LlamaIndex | RAGFlow | Azure AI Search | Vectara | Ragie | LlamaCloud | Haystack |
|---|---|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 42.2% | 23.1% | 23.1% | 5.7% | 2.5% | 2.1% | 0.5% | 0.34% | 0.41% | 0.07% |
| Nov 2025 | 46.7% | 20.9% | 20.9% | 5.1% | 2.8% | 2.3% | 0.45% | 0.29% | 0.37% | 0.06% |
| Dec 2025 | 44.9% | 20.1% | 24.6% | 4.9% | 2.7% | 1.8% | 0.43% | 0.24% | 0.28% | 0.06% |
| Jan 2026 | 42.3% | 23.2% | 23.2% | 5.7% | 2.5% | 2.1% | 0.41% | 0.22% | 0.34% | 0.05% |
| Feb 2026 | 44.9% | 24.6% | 20.1% | 4.9% | 2.2% | 2.2% | 0.43% | 0.19% | 0.28% | 0.05% |
| Mar 2026 | 42.6% | 23.3% | 23.3% | 5.7% | 2.6% | 1.7% | 0.34% | 0.19% | 0.22% | 0.04% |
| Apr 2026 | 40.2% | 26.9% | 22.1% | 5.4% | 3% | 1.6% | 0.39% | 0.17% | 0.21% | 0.04% |
| May 2026 | 40.5% | 27% | 22.2% | 5.4% | 2.4% | 1.6% | 0.39% | 0.17% | 0.17% | 0.03% |
| Jun 2026 | 40.9% | 27.3% | 22.4% | 4.5% | 2.5% | 1.6% | 0.33% | 0.22% | 0.18% | 0.04% |
| Jul 2026 | 40% | 26.9% | 22% | 5.4% | 2.9% | 2% | 0.31% | 0.26% | 0.21% | 0.04% |
| Aug 2026 | 42.4% | 28.4% | 19% | 4.7% | 3.1% | 1.7% | 0.33% | 0.17% | 0.15% | 0.04% |
| Sep 2026 | 43% | 28.8% | 19.2% | 3.9% | 2.6% | 1.7% | 0.33% | 0.17% | 0.15% | 0.05% |
How has the LangChain and RAGFlow comparison changed over the last 12 months?
3 findings
- LangChain was ahead of RAGFlow in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, LangChain’s share of searches among rag platforms worldwide moved from 42.2% to 43%, and its estimated monthly branded searches moved from 301K to 246K.
- Across the 12 months ending September 2026, RAGFlow’s share of searches among rag platforms worldwide moved from 2.5% to 2.6%, and its estimated monthly branded searches moved from 18.1K to 14.8K.
How did search popularity change for rag platforms worldwide in September 2026?
2 changes
In September 2026, LangChain gained share of searches among rag platforms worldwide, from 42.4% to 43%.
In September 2026, RAGFlow lost share of searches among rag platforms worldwide, from 3.1% to 2.6%.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using LangChain’s and RAGFlow’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
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