LangSmith vs Neptune:Which is more popular?
In September 2026, LangSmith had more branded searches than Neptune among experiment tracking platforms worldwide. LangSmith had about 74,000 branded searches, while Neptune had 1,600. LangSmith made up 11.3% of all experiment tracking platform searches we track, and Neptune accounted for 0.24%. When we asked ChatGPT and Google AI Overviews about experiment tracking platforms, LangSmith and Neptune each appeared in two of the five answers. LangSmith and Neptune were each mentioned first in two of the four answers that named either.
Who do people search for more?
LangSmith, about 46 searches for every 1 for Neptune
Who does AI mention more?
Both were mentioned in 2 of 5 answers.
Who does AI recommend more?
Each is named first in 2 of 4 answers.
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Top experiment tracking platforms 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. Neptune was mentioned in two out of five: not in any of the three ChatGPT answers, but in both Google AI Overviews. LangSmith and Neptune were each listed first in two of the four answers that named either.
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.
Weights & Biases5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
MLflow5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Comet5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
ClearML4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Langfuse2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers- LangSmith2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Neptune2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
DVC1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
See every answer about experiment tracking platforms
5 answers
Asked ChatGPT
“Which experiment tracking platform should I use?”
Asked ChatGPT
“What are the best experiment tracking platforms?”
Asked ChatGPT
“What's the best experiment tracking platform for machine learning teams?”
Searched Google, AI Overview
“experiment tracking software”
Searched Google, AI Overview
“ml experiment tracking”
Brands are shown in the order each answer named them. The survey took place in the United States on October 20, 2026.
Is LangSmith or Neptune more popular in search?
This chart shows how often people search Google for LangSmith and Neptune by name. Each line represents a brand's share of searches for all eight experiment tracking platforms we track, month by month, from English-language searches worldwide.
Share of searches by month for LangSmith, Neptune. The figures are in the table below the chart.
View monthly share of searches table
| Month | DVC | Langfuse | LangSmith | Weights & Biases | MLflow | Neptune | Comet | ClearML |
|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 55.6% | 11.2% | 11.2% | 12% | 9.1% | 0.36% | 0.44% | 0.15% |
| Nov 2025 | 50.6% | 12.4% | 12.4% | 13.4% | 10.2% | 0.4% | 0.4% | 0.17% |
| Dec 2025 | 56% | 11.3% | 11.3% | 11.6% | 7.5% | 1.8% | 0.29% | 0.13% |
| Jan 2026 | 60.3% | 12.1% | 9.9% | 10.2% | 6.6% | 0.39% | 0.32% | 0.12% |
| Feb 2026 | 56.4% | 13.9% | 11.3% | 10% | 7.6% | 0.37% | 0.29% | 0.13% |
| Mar 2026 | 51.5% | 15.4% | 12.7% | 11.1% | 8.5% | 0.41% | 0.34% | 0.14% |
| Apr 2026 | 50.6% | 15.1% | 12.5% | 12.8% | 8.3% | 0.26% | 0.26% | 0.12% |
| May 2026 | 52.7% | 15.8% | 13% | 10.9% | 7.1% | 0.23% | 0.23% | 0.13% |
| Jun 2026 | 48.5% | 17.7% | 14.6% | 10.5% | 8% | 0.31% | 0.21% | 0.14% |
| Jul 2026 | 54.5% | 16.3% | 13.4% | 7.9% | 7.3% | 0.19% | 0.19% | 0.13% |
| Aug 2026 | 56.1% | 16.8% | 11.3% | 7.8% | 7.5% | 0.2% | 0.15% | 0.11% |
| Sep 2026 | 56.1% | 16.8% | 11.3% | 7.8% | 7.5% | 0.24% | 0.13% | 0.11% |
How has the LangSmith and Neptune comparison changed over the last 12 months?
3 findings
- LangSmith was ahead of Neptune in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, LangSmith’s share of searches among experiment tracking platforms worldwide moved from 11.2% to 11.3%, and its estimated monthly branded searches held steady at 74K.
- Across the 12 months ending September 2026, Neptune’s share of searches among experiment tracking platforms worldwide moved from 0.36% to 0.24%, and its estimated monthly branded searches moved from 2.4K to 1.6K.
How did search popularity change for experiment tracking platforms worldwide in September 2026?
2 changes
LangSmith’s share of searches among experiment tracking platforms worldwide has lost ground for 3 months in a row, from 14.6% to 11.3% in September 2026.
Estimated monthly branded searches for Neptune worldwide fell 33.3% over 12 measured months, from 2.4K to 1.6K in September 2026.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using LangSmith’s and Neptune’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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