How popular isLangSmith?
In September 2026, people searched for LangSmith by name about 74,000 times worldwide, about the same as the previous year. These searches made up 54% of all global AI testing tool searches, placing LangSmith first out of eight tools. When we asked both ChatGPT and Google AI Overviews about AI testing tools, LangSmith appeared in two of the five answers and was the seventh most recommended of the eight.
LangSmith is the most searched of 8 competitors and the seventh most recommended in AI answers.
LangSmithShare of searches 54%Mentioned in 2 of 5 AI answersPlace in AI recommendations 7th
PromptfooShare of searches 16.2%Mentioned in 2 of 5 AI answersPlace in AI recommendations 2nd
DeepEvalShare of searches 10.8%Mentioned in 2 of 5 AI answersPlace in AI recommendations 1st
ApplitoolsShare of searches 4.8%Mentioned in 1 of 5 AI answersPlace in AI recommendations 6th
MablShare of searches 4.8%Mentioned in 3 of 5 AI answersPlace in AI recommendations 4th
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Top AI testing tools in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, LangSmith was mentioned in two out of five: in two of the three ChatGPT answers, but not in either of the two Google AI Overviews. LangSmith is the seventh most recommended of the eight.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- Mabl3 of 5Named in 1 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- LangSmith2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Promptfoo2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- DeepEval2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Testim2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Momentic2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers- Applitools1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
QA Wolf0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about AI testing tools
5 answers
Asked ChatGPT
“Which AI testing tool should I use?”
Asked ChatGPT
“What are the best AI testing tools?”
Asked ChatGPT
“What's the best AI testing tool for automated software tests?”
Searched Google, AI Overview
“ai testing tools”
Searched Google, AI Overview
“best test automation tool”
- 1Mabl
- 1
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 20, 2026.
Which AI testing tools compete with LangSmith?
Share of searches by month for LangSmith, Promptfoo, DeepEval, Applitools, Mabl, Testim, Momentic, QA Wolf. The figures are in the table below the chart.
View monthly share of searches table
| Month | LangSmith | Promptfoo | DeepEval | Applitools | Mabl | Testim | Momentic | QA Wolf |
|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 55.9% | 7.5% | 9.1% | 5% | 7.5% | 9.1% | 1.8% | 4% |
| Nov 2025 | 54.5% | 8.9% | 8.9% | 4.9% | 7.3% | 8.9% | 2.7% | 3.9% |
| Dec 2025 | 56.9% | 9.3% | 9.3% | 5.1% | 6.2% | 7.6% | 2.2% | 3.3% |
| Jan 2026 | 49.8% | 10% | 10% | 10% | 6.7% | 8.1% | 2% | 3.6% |
| Feb 2026 | 52.2% | 10.4% | 10.4% | 5.7% | 7% | 8.5% | 2% | 3.7% |
| Mar 2026 | 40.7% | 33.3% | 6.7% | 3.6% | 5.4% | 5.4% | 2% | 2.9% |
| Apr 2026 | 52.5% | 15.7% | 8.6% | 4.7% | 5.7% | 7% | 2.1% | 3.6% |
| May 2026 | 57.5% | 14.1% | 9.4% | 3.4% | 5.2% | 5.2% | 1.8% | 3.4% |
| Jun 2026 | 56.1% | 13.8% | 11.2% | 2.7% | 5% | 5% | 2.2% | 3.9% |
| Jul 2026 | 57.9% | 14.2% | 11.6% | 2.8% | 4.2% | 4.2% | 2.3% | 2.8% |
| Aug 2026 | 54% | 16.2% | 13.2% | 2.6% | 4.8% | 3.9% | 2.6% | 2.6% |
| Sep 2026 | 54% | 16.2% | 10.8% | 4.8% | 4.8% | 3.9% | 3.2% | 2.2% |
| Rank | Brand | Share of searches | Estimated monthly branded searches | vs prior month | Share change |
|---|---|---|---|---|---|
| 1, held 1st | 54% | 74K | 0% | +0.1 points | |
| 2, held 2nd | 16.2% | 22.2K | 0% | 0 points | |
| 3, held 3rd | 10.8% | 14.8K | -18.2% | -2.4 points | |
| 4, moved from 7th to 4th | 4.8% | 6.6K | +83.3% | +2.2 pointsmoved from 7th to 4th | |
| 5, moved from 4th to 5th | 4.8% | 6.6K | 0% | 0 pointsmoved from 4th to 5th | |
| 6, moved from 5th to 6th | 3.9% | 5.4K | 0% | 0 pointsmoved from 5th to 6th | |
| 7, moved from 8th to 7th | 3.2% | 4.4K | +22.2% | +0.6 pointsmoved from 8th to 7th | |
| 8, moved from 6th to 8th | 2.2% | 3K | -17.4% | -0.5 pointsmoved from 6th to 8th |
54%
Held 1st. 74K estimated branded searches, 0% vs prior month. Share +0.1 points.
16.2%
Held 2nd. 22.2K estimated branded searches, 0% vs prior month. Share 0 points.
3.
DeepEval10.8%
Held 3rd. 14.8K estimated branded searches, -18.2% vs prior month. Share -2.4 points.
4.8%
Moved from 7th to 4th. 6.6K estimated branded searches, +83.3% vs prior month. Share +2.2 points.
5.
Mabl4.8%
Moved from 4th to 5th. 6.6K estimated branded searches, 0% vs prior month. Share 0 points.
6.
Testim3.9%
Moved from 5th to 6th. 5.4K estimated branded searches, 0% vs prior month. Share 0 points.
7.
Momentic3.2%
Moved from 8th to 7th. 4.4K estimated branded searches, +22.2% vs prior month. Share +0.6 points.
8.
QA Wolf2.2%
Moved from 6th to 8th. 3K estimated branded searches, -17.4% vs prior month. Share -0.5 points.
Compare popularity between LangSmith and its closest rivals
Every comparison with LangSmith
27 comparisons
- DVC vs LangSmith
- Langfuse vs LangSmith
- LangSmith vs Weights & Biases
- LangSmith vs MLflow
- LangSmith vs Promptfoo
- DeepEval vs LangSmith
- Arize Phoenix vs LangSmith
- Arize vs LangSmith
- Applitools vs LangSmith
- LangSmith vs Mabl
- LangSmith vs Testim
- Helicone vs LangSmith
- LangSmith vs Momentic
- LangSmith vs Patronus AI
- LangSmith vs Lunary
- LangSmith vs QA Wolf
- Braintrust vs LangSmith
- Evidently vs LangSmith
- Fiddler vs LangSmith
- LangSmith vs PromptLayer
- LangSmith vs Neptune
- Humanloop vs LangSmith
- Comet vs LangSmith
- Datadog LLM Observability vs LangSmith
- ClearML vs LangSmith
- LangSmith vs WhyLabs
- LangSmith vs NannyML
How has branded search demand for LangSmith changed worldwide over the last 12 months?
3 findings
- Across the 12 months ending September 2026, estimated monthly branded searches for LangSmith worldwide held steady at 74K.
- Across the 12 months ending September 2026, LangSmith’s share of searches among AI testing tools worldwide decreased from 55.9% to 54%.
- Across the 12 months ending September 2026, LangSmith’s share of searches among AI testing tools worldwide peaked at 57.9% in July 2026 and was lowest at 40.7% in March 2026.
How did search popularity change for AI testing tools worldwide in September 2026?
6 changes
In September 2026, Momentic overtook QA Wolf to rank 7th among AI testing tools worldwide, with 3.2% of the searches.
In September 2026, Applitools overtook Mabl and 2 others to rank 4th among AI testing tools worldwide, with 4.8% of the searches.
In September 2026, DeepEval lost share of searches among AI testing tools worldwide, from 13.2% to 10.8%.
Promptfoo’s share of searches among AI testing tools worldwide has gained ground for 3 months in a row, from 13.8% to 16.2% in September 2026.
QA Wolf’s share of searches among AI testing tools worldwide has lost ground for 3 months in a row, from 3.9% to 2.2% in September 2026.
Estimated monthly branded searches for Testim worldwide fell 55.4% over 12 measured months, from 12.1K to 5.4K in September 2026.
How are LangSmith’s branded searches counted?
1 search term
Brandwave collects information about searches that people make online using LangSmith’s name. When viewed over time, estimated search volumes for this branded term can be used to understand whether interest in the brand is growing, holding steady, or fading.
- langsmith
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Where does LangSmith compete?
| Competitor set | Rank | Share of searches | Ranking |
|---|---|---|---|
| Experiment tracking platforms | 3rd of 8 | 11.3% | Show ranking |
| AI evaluation platforms | 2nd of 7 | 26.8% | Show ranking |
| LLM observability platforms | 2nd of 8 | 28.4% | Show ranking |
| Prompt management platforms | 2nd of 7 | 34.2% | Show ranking |
| Model monitoring platforms | 2nd of 9 | 36% | Show ranking |
| AI testing tools | 1st of 8 | 54% | Shown above |
Is LangSmith your brand?
Put your own campaigns, spend and outcomes next to this demand line, so you can see which of your marketing lined up with the movements above.