AssemblyAI
AI models to transcribe and understand speech.
VS
LangSmith
AI Observability Platform
Popularity
AssemblyAI8,182
LangSmith8,818
Pricing
FreemiumAssemblyAI
FreemiumLangSmith
Features
4
AssemblyAI
vs
6
LangSmith
Detailed comparison
Criteria
AssemblyAI
LangSmith
Pricing
Freemium
Freemium
Plans & pricing
Free: Free, Pay-as-you-go: $0.21/mo
Free: Free, Developer: Free, Team: $39/mo, Enterprise: Custom
Free trial
No
No
Audience
b2b
b2b
Platforms
Web, Api
Web, Api, Cli
API
Yes
Yes
Open Source
Proprietary
Proprietary
Integrations
Zapier
Amazon-bedrock, Anthropic, Google-adk, Openai-sdk, Vercel-ai-sdk, Autogen, Claude-agent-sdk, Claude-code, Crewai, Deep-agents, Instructor, Langchain, Langgraph, Openai-agents-sdk, Semantic-kernel, Aws, Aws-cloudwatch, Azure, Gcp, Kubernetes
Categories
Voice, Dev Tools
Data Science, Dev Tools
Popularity
Very High
Very High
Description
AssemblyAI provides industry-leading Speech AI models to accurately transcribe speech to text and extract valuable insights from voice data. Developers can leverage its advanced capabilities for converting audio and video files, processing live streams, identifying speakers, detecting languages, and automatically formatting text.
LangSmith is a comprehensive AI agent and LLM observability platform with tracing and real-time monitoring. It helps developers debug agents, find failures fast, and track costs and latency. The platform provides features like SDKs for multiple programming languages, message threading, and cost tracking. It also offers tool and agent trajectory monitoring, webhook and PagerDuty alerts, and more.
Pricing
AssemblyAI
Freemium
LangSmith
Freemium
Plans & pricing
AssemblyAI
Free: Free, Pay-as-you-go: $0.21/mo
LangSmith
Free: Free, Developer: Free, Team: $39/mo, Enterprise: Custom
Free trial
AssemblyAI
No
LangSmith
No
Audience
AssemblyAI
b2b
LangSmith
b2b
Platforms
AssemblyAI
Web, Api
LangSmith
Web, Api, Cli
API
AssemblyAI
Yes
LangSmith
Yes
Open Source
AssemblyAI
Proprietary
LangSmith
Proprietary
Integrations
AssemblyAI
Zapier
LangSmith
Amazon-bedrock, Anthropic, Google-adk, Openai-sdk, Vercel-ai-sdk, Autogen, Claude-agent-sdk, Claude-code, Crewai, Deep-agents, Instructor, Langchain, Langgraph, Openai-agents-sdk, Semantic-kernel, Aws, Aws-cloudwatch, Azure, Gcp, Kubernetes
Categories
AssemblyAI
Voice, Dev Tools
LangSmith
Data Science, Dev Tools
Popularity
AssemblyAI
Very High
LangSmith
Very High
Description
AssemblyAI
AssemblyAI provides industry-leading Speech AI models to accurately transcribe speech to text and extract valuable insights from voice data. Developers can leverage its advanced capabilities for converting audio and video files, processing live streams, identifying speakers, detecting languages, and automatically formatting text.
LangSmith
LangSmith is a comprehensive AI agent and LLM observability platform with tracing and real-time monitoring. It helps developers debug agents, find failures fast, and track costs and latency. The platform provides features like SDKs for multiple programming languages, message threading, and cost tracking. It also offers tool and agent trajectory monitoring, webhook and PagerDuty alerts, and more.
Features
AssemblyAI
Up to 30% less hallucinations than other providers
Correctly identify speakers with advanced diarization capabilities
Automatically format text and alphanumerics for clearer outputs
Accurately capture multilingual speech with automatic language detection
LangSmith
SDKs for Python, TypeScript, Go, and Java
Message threading for multi-turn chat interactions
Cost tracking
Tool and agent trajectory monitoring
Webhook and Pagerduty alerts
Unsupervised topic clustering
Key differentiators
AssemblyAI
- Industry-leading Speech AI models
- Advanced audio intelligence features
- High accuracy transcription
LangSmith
- End-to-end LLM observability
- Robust debugging and evaluation
- Framework-agnostic integration
- Production monitoring and scalability
- Unified platform for agent engineering
Other comparisons
FAQ: AssemblyAI vs LangSmith
AssemblyAI: AI models to transcribe and understand speech.. LangSmith: AI Observability Platform. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. AssemblyAI is freemium and LangSmith is freemium.
The best choice between AssemblyAI and LangSmith depends on your specific needs. Compare their features, pricing, and target audience on this page to find the tool that best fits your use case.
Both are primarily designed for individuals. The choice depends on which specific features you need.
AssemblyAI offers: Up to 30% less hallucinations than other providers, Correctly identify speakers with advanced diarization capabilities, Automatically format text and alphanumerics for clearer outputs, Accurately capture multilingual speech with automatic language detection. LangSmith offers: SDKs for Python, TypeScript, Go, and Java, Message threading for multi-turn chat interactions, Cost tracking, Tool and agent trajectory monitoring.
Based on our data, LangSmith currently enjoys greater popularity. However, popularity isn't the only factor — compare features to find the right tool for your needs.
Neither tool currently offers a free trial.
LangSmith offers 20 integrations (amazon-bedrock, anthropic, google-adk, openai-sdk, vercel-ai-sdk...) compared to 1 for AssemblyAI.
AssemblyAI is available on Web, Api. LangSmith is available on Web, Api, Cli.