Fiddler vs LangSmith:Which is searched more?
In September 2026, LangSmith had more branded searches than Fiddler among model monitoring platforms worldwide. LangSmith had about 74,000 branded searches, while Fiddler had 2,400. LangSmith made up 36% of all model monitoring platform searches we track, and Fiddler accounted for 1.2%. These are worldwide searches for English-language branded terms.
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Is Fiddler or LangSmith more popular in search?
Compare the tools that watch machine learning models in production. 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 searches by month for LangSmith, Fiddler. The figures are in the table below the chart.
View monthly share of searches table
| Month | Langfuse | LangSmith | Arize | Braintrust | Evidently | Fiddler | Datadog LLM Observability | WhyLabs | NannyML |
|---|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 43.5% | 43.5% | 5.8% | 0.94% | 2.1% | 1.7% | 1.4% | 0.76% | 0.35% |
| Nov 2025 | 44.2% | 44.2% | 4.8% | 0.95% | 2.1% | 1.7% | 1.1% | 0.6% | 0.29% |
| Dec 2025 | 43.8% | 43.8% | 5.9% | 1.1% | 2.1% | 1.4% | 1.1% | 0.59% | 0.23% |
| Jan 2026 | 48.4% | 39.6% | 5.3% | 1.6% | 1.6% | 1.9% | 1% | 0.53% | 0.21% |
| Feb 2026 | 48.2% | 39.4% | 5.3% | 1.3% | 1.9% | 1.9% | 1.3% | 0.53% | 0.26% |
| Mar 2026 | 48.8% | 40.1% | 4.4% | 0.84% | 2% | 2% | 1.3% | 0.44% | 0.21% |
| Apr 2026 | 49.1% | 40.4% | 4.4% | 1.1% | 2% | 1.6% | 0.85% | 0.39% | 0.21% |
| May 2026 | 49% | 40.3% | 5.4% | 1.1% | 1.3% | 1.3% | 1.1% | 0.45% | 0.17% |
| Jun 2026 | 49.6% | 40.8% | 4.5% | 1.1% | 1.3% | 1.1% | 1.1% | 0.4% | 0.18% |
| Jul 2026 | 49.7% | 40.9% | 4.5% | 1.1% | 1.3% | 1.3% | 0.59% | 0.45% | 0.18% |
| Aug 2026 | 52.7% | 35.5% | 7.1% | 1.4% | 1.2% | 1.2% | 0.48% | 0.35% | 0.15% |
| Sep 2026 | 53.5% | 36% | 5.9% | 1.4% | 1.2% | 1.2% | 0.43% | 0.23% | 0.16% |
How has the Fiddler and LangSmith comparison changed over the last 12 months?
3 findings
- LangSmith was ahead of Fiddler in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Fiddler’s share of searches among model monitoring platforms worldwide moved from 1.7% to 1.2%, and its estimated monthly branded searches moved from 2.9K to 2.4K.
- Across the 12 months ending September 2026, LangSmith’s share of searches among model monitoring platforms worldwide moved from 43.5% to 36%, and its estimated monthly branded searches held steady at 74K.
How did search popularity change for model monitoring platforms worldwide in September 2026?
2 changes
In September 2026, LangSmith gained share of searches among model monitoring platforms worldwide, from 35.5% to 36%.
Estimated monthly branded searches for Fiddler worldwide fell 17.2% over 12 measured months, from 2.9K to 2.4K in September 2026.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using Fiddler’s and LangSmith’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.
Other head-to-heads among model monitoring platforms
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