Arize Phoenix vs LangSmith

Detailed comparison across 10 dimensions

Winner: Arize Phoenix

Arize Phoenix clearly comes out ahead of LangSmith on Staquest's weighted six-dimension score. Both offer a free tier. LangSmith's paid plans start at $39/mo.

Quick Overview

Overview	Arize PhoenixOpen-source LLM tracing and evaluation platform.	LangSmithObservability and evaluation platform for LLM applications.
Type	hybrid	ai tool
Company	Arize AI	LangChain Inc.
Free Tier
Has API
Open Source
Trending	Stable	Stable
Industries	DevelopmentMarketingAI & Machine LearningSaaS & Cloud	DevelopmentMarketingAI & Machine LearningSaaS & Cloud
Categories	ai-chatbotai-agents-frameworks	observability-apmai-chatbotai-agents-frameworks
Website	Visit	Visit

Dimension Scores

Winners by Dimension

Overall Winner

Arize Phoenix

Arize Phoenix: 7.1LangSmith: 5.3(+1.7 pts)

Pricing Value

Arize Phoenix15% weight

Arize Phoenix

8.0

LangSmith

1.0

Free Tier

Arize Phoenix10% weight

Arize Phoenix

9.0

LangSmith

8.0

Scalability

LangSmith10% weight

Arize Phoenix

4.8

LangSmith

9.4

Integrations

Tie10% weight

Arize Phoenix

8.0

LangSmith

8.0

Community

Tie5% weight

Arize Phoenix

3.1

LangSmith

3.1

Open Source

Arize Phoenix5% weight

Arize Phoenix

7.0

LangSmith

2.0

Pricing Comparison

Arize Phoenix

Phoenix OSS

Free

open source

Self-hosted
OpenTelemetry-based instrumentation
Tracing
Evaluation
Prompt Playground
Datasets & Experiments

LangSmith

Developer

Free

View pricing

freemium

1 seat
5,000 base traces/month included
Access to LangSmith (tracing, evaluation, Prompt Hub, Playground, Canvas, annotation queues)
1 free dev-sized deployment

Plus

~$39/mo

View pricing

per seat

Unlimited seats
10,000 base traces/month included per seat
Includes all Developer features
Collaboration features (multiple workspaces)
Enhanced rate limits and throughput

Enterprise

Contact sales

View pricing

custom

Advanced administration and authentication
Custom deployment options (including BYOC and self-hosting)
Dedicated support
Annual invoicing options

Feature Comparison

Feature	arize-phoenix	langsmith
Datasets & Experiments
1 Free Dev-Sized Deployment
Evaluation
1 Seat
Opentelemetry-Based Instrumentation
10,000 Base Traces/Month Included Per Seat
Prompt Playground
5,000 Base Traces/Month Included
Self-Hosted
Access To Langsmith (Tracing, Evaluation, Prompt Hub, Playground, Canvas, Annotation Queues)
Tracing
Advanced Administration And Authentication
Annual Invoicing Options
Collaboration Features (Multiple Workspaces)
Custom Deployment Options (Including Byoc And Self-Hosting)
Dedicated Support
Enhanced Rate Limits And Throughput
Includes All Developer Features
Unlimited Seats

Showing 19 of 19 features

Dashes mean the feature isn't listed in our data. The tool may still support it.

Frequently asked questions

Is Arize Phoenix or LangSmith better?

On Staquest's weighted six-dimension scoring, Arize Phoenix comes out ahead overall, though LangSmith can be the better fit depending on your priorities — see the dimension-by-dimension breakdown above.

Does Arize Phoenix or LangSmith have a free tier?

Both Arize Phoenix and LangSmith offer a free tier.

Which is better for pricing value, Arize Phoenix or LangSmith?

Arize Phoenix scores higher on pricing value in Staquest's analysis. It is the highest-weighted dimension in this comparison.

What are the main differences between Arize Phoenix and LangSmith?

Arize Phoenix is open source. The feature comparison and dimension scores above cover the full breakdown.

View Arize Phoenix View LangSmith