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swap_horiz LangSmith Alternatives

Looking for alternatives to LangSmith? Compare the top Google Vertex AI Agent Builder options ranked by our AI scoring system.

You're looking at alternatives to:
LangSmith

LangSmith

While not an agent builder itself, LangSmith is critical infrastructure for *building* and *improving* agents. It provides end-to-end observability, allowing developers to trace every step, input, and output of a complex agent run. This capability is invaluable for debugging hallucinations, optimizi...

8.3 Great

apps Top LangSmith Alternatives

The top alternative to LangSmith in 2026 is Google Cloud Vertex AI Agent Builder with a score of 9.6/10, followed by CrewAI (9.5) and Google Vertex AI Agent Builder (8.7).

1
Google Cloud Vertex AI Agent Builder

Google Cloud Vertex AI Agent Builder

Vertex AI Agent Builder provides a highly customizable, Google-native platform for building sophisticated, secure AI age...

Workflow Automation Cloud Native Google Cloud Machine Learning
9.6 Brilliant
2
CrewAI

CrewAI

CrewAI excels by formalizing the concept of multi-agent collaboration. Instead of building one monolithic agent, you def...

Collaborative Collaboration Simulation Business Process
9.5 Brilliant
3
Google Vertex AI Agent Builder

Google Vertex AI Agent Builder

Vertex AI provides a powerful, customizable platform for building agents that leverage Google's entire suite of models a...

AI Enterprise Scalable Cloud Native
8.7 Great
4
Google Cloud Vertex AI Vertex AI Search

Google Cloud Vertex AI Vertex AI Search

Google Cloud Vertex AI Search is an enterprise search service that enables developers to build generative AI-powered app...

Enterprise Search
8.7 Great
5
VE

Vertex AI SDK for Python

The Vertex AI SDK for Python is a Google Cloud software library that allows developers to programmatically interact with...

Python Development
8.6 Great
6
Haystack (Deepset)

Haystack (Deepset)

Haystack is a mature, end-to-end framework focused heavily on building robust Retrieval-Augmented Generation (RAG) pipel...

Semantic Search Python Stable Framework
8.5 Great
7
Amazon Bedrock

Amazon Bedrock

Amazon Bedrock acts as a managed service layer, giving enterprises access to a curated selection of leading foundational...

AI Enterprise API Access AWS Cloud
8.2 Great
8
Zapier Interfaces (AI Actions)

Zapier Interfaces (AI Actions)

For non-developers or business analysts, Zapier Interfaces provides the fastest path to building functional, connected A...

Automation Integration SAAS No Code
8.2 Great
9
Vertex AI Model Garden

Vertex AI Model Garden

Vertex AI Model Garden is a Google Cloud service providing developers access to various open-source and proprietary mach...

Foundation Model
8.2 Great
10
FlowiseAI

FlowiseAI

FlowiseAI provides a highly visual, drag-and-drop interface for building conversational AI flows, abstracting away much...

No Code Prototyping Low Code Interactive
7.9 Good
11
Vertex AI Pipelines

Vertex AI Pipelines

Vertex AI Pipelines is a Google Cloud service that enables data scientists to orchestrate, automate, and monitor end-to-...

Automation Pipeline
7.6 Good
12
ChromaDB

ChromaDB

ChromaDB is highly favored by developers for its ease of use, especially in local development environments or smaller-sc...

Easy To Use Open Source Developer Friendly Rag Component
7.5 Good
13
Atlassian Intelligence

Atlassian Intelligence

Atlassian Intelligence embeds AI directly into Jira and Confluence, making it a powerful assistant for knowledge workers...

Collaboration Knowledge Base Atlassian Confluence
7.4 Good
14
AutoGen (Microsoft)

AutoGen (Microsoft)

AutoGen is a powerful framework focused on enabling conversational agents to interact with each other and with the user....

Developer Tool Conversational AI Python Library Agent Framework
7.3 Good
15
LangChain Expression Language (LCEL)

LangChain Expression Language (LCEL)

LCEL is not a full agent builder but rather the foundational, modern way to compose LLM calls, prompt templates, and out...

Modular Modular Design Python Library Structured Output
7.0 Good
16
OpenAI API (GPT-4o)

OpenAI API (GPT-4o)

The raw power of the GPT-4o model via its API remains a benchmark for general intelligence and multimodal capability. It...

Multimodal API Developer Tool API Access
6.2 Fair
17
Rasa Open Source

Rasa Open Source

Rasa is a mature, highly customizable open-source framework for building contextual assistants. It gives developers deep...

Open Source Conversational Conversational AI Custom Model
6.2 Fair
18
Google Dialogflow ES

Google Dialogflow ES

Dialogflow ES is the predecessor to CX and remains viable for simpler, well-defined conversational use cases where the c...

Easy To Use Prototyping Google Cloud Cloud Based
6.0 Fair
19
LlamaIndex Agents

LlamaIndex Agents

This represents the dedicated agent module within the LlamaIndex ecosystem. It focuses specifically on giving the agent...

Knowledge Graph Data Driven Data Integration Python Library
6.0 Fair

summarize Quick Comparison Summary

Alternative Score vs LangSmith Action
Google Cloud Vertex AI Agent Builder
Google Cloud Vertex AI Agent Builder
Google Vertex AI Agent Builder Workflow Automation Cloud Native Google Cloud
9.6 Brilliant +1.3 Compare
CrewAI
CrewAI
Google Vertex AI Agent Builder Collaborative Collaboration Simulation
9.5 Brilliant +1.2 Compare
Google Vertex AI Agent Builder
Google Vertex AI Agent Builder
Google Vertex AI Agent Builder AI Enterprise Scalable
8.7 Great +0.4 Compare
Google Cloud Vertex AI Vertex AI Search
Google Cloud Vertex AI Vertex AI Search
Google Vertex AI Agent Builder Enterprise Search
8.7 Great +0.4 Compare
VE
Vertex AI SDK for Python
Google Vertex AI Agent Builder Python Development
8.6 Great +0.3 Compare
Haystack (Deepset)
Haystack (Deepset)
Google Vertex AI Agent Builder Semantic Search Python Stable
8.5 Great +0.2 Compare
Amazon Bedrock
Amazon Bedrock
Google Vertex AI Agent Builder AI Enterprise API Access
8.2 Great -0.1 Compare
Zapier Interfaces (AI Actions)
Zapier Interfaces (AI Actions)
Google Vertex AI Agent Builder Automation Integration SAAS
8.2 Great -0.1 Compare
Vertex AI Model Garden
Vertex AI Model Garden
Google Vertex AI Agent Builder Foundation Model
8.2 Great -0.1 Compare
FlowiseAI
FlowiseAI
Google Vertex AI Agent Builder No Code Prototyping Low Code
7.9 Good -0.4 Compare

See all Google Vertex AI Agent Builder ranked by score

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help Frequently Asked Questions

What are the best alternatives to LangSmith?
The top alternatives to LangSmith in 2026 include Google Cloud Vertex AI Agent Builder, CrewAI, Google Vertex AI Agent Builder, Google Cloud Vertex AI Vertex AI Search, Vertex AI SDK for Python. Each offers unique features and is objectively scored on Lunoo to help you compare.
How does LangSmith compare to its competitors?
Our AI-powered comparison system analyzes features, pricing, user reviews, and expert opinions to provide objective scores. LangSmith scores 8.3/10. Click any alternative above to see a detailed side-by-side comparison.
Is LangSmith worth it in 2026?
LangSmith scores 8.3/10 on Lunoo, making it a highly-rated option in the Google Vertex AI Agent Builder category. However, alternatives like Google Cloud Vertex AI Agent Builder may better suit specific needs.
What is the best free alternative to LangSmith?
Several alternatives to LangSmith offer free plans or free tiers. Check the alternatives listed above and visit their websites to compare pricing and free options.
Why should I switch from LangSmith?
Common reasons users look for LangSmith alternatives include pricing, specific feature gaps, better integration needs, or simply exploring newer options. Our objective scoring helps you compare without bias.
How many alternatives to LangSmith are there?
Lunoo currently lists 19 scored alternatives to LangSmith in the Google Vertex AI Agent Builder category, ranked by our AI-powered evaluation system.
Which LangSmith alternative has the highest rating?
Google Cloud Vertex AI Agent Builder currently holds the highest rating among LangSmith alternatives with a score of 9.6/10.
Can I use Google Cloud Vertex AI Agent Builder instead of LangSmith?
Google Cloud Vertex AI Agent Builder is one of the top-rated alternatives to LangSmith. While they serve similar purposes in the Google Vertex AI Agent Builder space, each has distinct strengths. Use our comparison tool above for a detailed side-by-side analysis.
What is the cheapest alternative to LangSmith?
Pricing varies among LangSmith alternatives. We recommend checking each alternative's website for current pricing. Many options in the Google Vertex AI Agent Builder category offer free tiers or competitive pricing.
How are LangSmith alternatives ranked on Lunoo?
Lunoo uses an AI-powered scoring system that analyzes category fit, feature coverage, pricing signals, public reception, recency, and value to provide 0 to 10 scores. Rankings are updated continuously.
LangSmith vs Google Cloud Vertex AI Agent Builder: which is better?
LangSmith scores 8.3/10 while Google Cloud Vertex AI Agent Builder scores 9.6/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.
LangSmith vs CrewAI: which is better?
LangSmith scores 8.3/10 while CrewAI scores 9.5/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.
LangSmith vs Google Vertex AI Agent Builder: which is better?
LangSmith scores 8.3/10 while Google Vertex AI Agent Builder scores 8.7/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.

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