LangChain vs LlamaIndex:Which is more popular by branded search?
In August 2026, LangChain had more branded searches than LlamaIndex among AI agent frameworks worldwide. LangChain was estimated to have 246K branded searches compared to LlamaIndex’s 27.1K, and held a 67% Share of Search versus LlamaIndex’s 7.4%. These are worldwide searches for English-language branded terms.
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Which is more popular in search, LangChain or LlamaIndex?
Compare the frameworks developers build AI agents with. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time.
Share of Search by month for LangChain, LlamaIndex. The figures are in the table below the chart.
View monthly share of search table
| Month | LangChain | CrewAI | AutoGen | LlamaIndex | Semantic Kernel |
|---|---|---|---|---|---|
| Oct 2025 | 62.3% | 15.3% | 10.2% | 8.4% | 3.7% |
| Nov 2025 | 67.3% | 13.5% | 9.1% | 7.4% | 2.7% |
| Dec 2025 | 68.8% | 13.8% | 7.6% | 7.6% | 2.3% |
| Jan 2026 | 64.3% | 15.8% | 8.7% | 8.7% | 2.6% |
| Feb 2026 | 63.1% | 19% | 8.5% | 6.9% | 2.5% |
| Mar 2026 | 59.7% | 21.9% | 8% | 8% | 2.4% |
| Apr 2026 | 56.9% | 25.5% | 7.7% | 7.7% | 2.3% |
| May 2026 | 60.9% | 22.2% | 6.7% | 8.2% | 2% |
| Jun 2026 | 64.6% | 19.4% | 7.1% | 7.1% | 1.7% |
| Jul 2026 | 63.4% | 19.1% | 7% | 8.5% | 2.1% |
| Aug 2026 | 67% | 16.5% | 7.4% | 7.4% | 1.8% |
| Sep 2026 | — | — | — | — | — |
How has the LangChain and LlamaIndex comparison changed over the last 12 months?
3 findings
- LangChain was ahead of LlamaIndex in every measured month of the 11 months ending August 2026.
- Across the 11 months ending August 2026, LangChain’s estimated Share of Search among AI agent frameworks worldwide moved from 62.3% to 67%, and its estimated monthly branded searches moved from 301K to 246K.
- Across the 11 months ending August 2026, LlamaIndex’s estimated Share of Search among AI agent frameworks worldwide moved from 8.4% to 7.4%, and its estimated monthly branded searches moved from 40.5K to 27.1K.
How did search popularity change for AI agent frameworks worldwide in August 2026?
2 changes
In August 2026, LangChain gained estimated Share of Search among AI agent frameworks worldwide, from 63.4% to 67%.
In August 2026, LlamaIndex lost estimated Share of Search among AI agent frameworks worldwide, from 8.5% to 7.4%.
How each brand is measured
Brandwave collects information about searches that people make online using LangChain’s and LlamaIndex’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.
LangChain
1 branded search term
- langchain
LlamaIndex
1 branded search term
- llamaindex
Put your own brand in this comparison
Brandwave tracks your branded demand next to the rival you actually watch, with your campaigns, spend and outcomes on the same timeline.