LangSmith alternatives

At a glance

We list 9 other LLM observability tools as alternatives to LangSmith: Braintrust, Confident AI, Helicone, Langfuse, Opik, Portkey, PromptLayer, Traceloop and W&B Weave.
Braintrust, Confident AI, Langfuse, Opik, Portkey, PromptLayer and Traceloop have a free plan.
Braintrust and Confident AI work with OpenTelemetry, as LangSmith does.
Confident AI works with LlamaIndex, as LangSmith does.

From each tool's own website and from published reviews. Each tool's page says when its facts were checked.

9 alternatives

Listed alphabetically. A tool is ranked by its reviews once it has 3.

Braintrust
The AI observability platform for tracing production, running evals, and catching regressions.
No reviews yet
Choose it over LangSmith for: integration with OpenAI, Anthropic or LangChain; SOC 2, GDPR or HIPAA.
Free plan
Yes
Paid plans from
Pro, $249 per month (as of November 14, 2026)
Integrations shared with LangSmith
OpenTelemetry
Main features
Evals, Loop agent, Pattern discovery
Security and compliance
SOC 2, GDPR, HIPAA, SSO
Compare with LangSmith
Be the first to review
Confident AI
The AI quality platform for enterprise teams to standardize AI evals and observability across the org.
No reviews yet
Choose it over LangSmith for: integration with OpenAI Agents, LangChain or LiteLLM; SOC 2, GDPR or HIPAA.
Free plan
Yes
Paid plans from
Starter, $200 per organization per month (as of November 14, 2026)
Integrations shared with LangSmith
LlamaIndex, OpenTelemetry
Main features
LLM evaluation, LLM observability, Voice AI evaluation
Security and compliance
SOC 2, GDPR, HIPAA, SSO
Compare with LangSmith
Be the first to review
Helicone
Routing and monitoring for reliable AI apps.
No reviews yet
Choose it over LangSmith for: integration with OpenAI, Anthropic or Azure; HIPAA.
Paid plans from
Pro, $79 per month (as of November 14, 2026)
Free trial
7 days
Integrations shared with LangSmith
None in common
Main features
Request monitoring, Sessions, Prompt management
Security and compliance
HIPAA, SSO
Compare with LangSmith
Be the first to review
Langfuse
Trace, evaluate, and improve AI agents with one open platform.
No reviews yet
Choose it over LangSmith for: integration with OpenAI, LangChain or LiteLLM; SOC 2, ISO 27001, GDPR or HIPAA.
Free plan
Yes
Paid plans from
Core, $29 per month (as of November 14, 2026)
Integrations shared with LangSmith
None in common
Main features
Evaluation, Prompt management, AI gateway
Security and compliance
SOC 2, ISO 27001, GDPR, HIPAA, SSO
Compare with LangSmith
Be the first to review
Opik
An end-to-end AI observability platform to test, ship, and improve agentic systems.
No reviews yet
Choose it over LangSmith for: integration with LangChain, OpenAI or CrewAI; SOC 2, ISO 27001, GDPR or HIPAA.
Free plan
Yes
Paid plans from
Pro Cloud, $19 per month (as of November 14, 2026)
Free trial
Yes
Integrations shared with LangSmith
None in common
Main features
LLM-as-a-judge evaluation, Production monitoring, Test suites
Security and compliance
SOC 2, ISO 27001, GDPR, HIPAA, SSO
Compare with LangSmith
Be the first to review
Portkey
AI gateway and observability for AI teams.
No reviews yet
Choose it over LangSmith for: integration with OpenAI, Anthropic or MongoDB; SOC 2, ISO 27001, GDPR or HIPAA.
Free plan
Yes
Paid plans from
Production, $49 per month (as of November 14, 2026)
Integrations shared with LangSmith
None in common
Main features
Observability, Prompt management, MCP gateway
Security and compliance
SOC 2, ISO 27001, GDPR, HIPAA, SSO
Compare with LangSmith
Be the first to review
PromptLayer
The prompt CMS, eval harness, and observability stack for AI engineering teams.
No reviews yet
Choose it over LangSmith for: integration with Claude Code; SOC 2, GDPR or HIPAA.
Free plan
Yes
Paid plans from
Pro, $49 per month (as of November 14, 2026)
Integrations shared with LangSmith
None in common
Main features
Prompt management, Agent observability, Evaluations
Security and compliance
SOC 2, GDPR, HIPAA, SSO
Compare with LangSmith
Be the first to review
Traceloop
Traceloop turns evals and monitors into a continuous feedback loop so every release gets better.
No reviews yet
Choose it over LangSmith for: integration with OpenAI, Anthropic or LangChain; SOC 2 or HIPAA.
Free plan
Yes
Plans
Free: $0 (as of November 14, 2026)
Free trial
14 days
Integrations shared with LangSmith
None in common
Main features
Built-in quality checks, Evaluations in pipeline, Monitoring dashboard
Security and compliance
SOC 2, HIPAA
Compare with LangSmith
Be the first to review
W&B Weave
Observability and continuous improvement for production agents.
No reviews yet
Choose it over LangSmith for: integration with Slack or Claude Code; HIPAA.
Free trial
Yes
Integrations shared with LangSmith
None in common
Main features
Agent-native tracing, Behavior monitoring, Flexible evaluation framework
Security and compliance
HIPAA, SSO
Compare with LangSmith
Be the first to review

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From reviews of other tools that say they used LangSmith before.

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At a glance

We list 9 other LLM observability tools as alternatives to LangSmith: Braintrust, Confident AI, Helicone, Langfuse, Opik, Portkey, PromptLayer, Traceloop and W&B Weave.

Braintrust, Confident AI, Langfuse, Opik, Portkey, PromptLayer and Traceloop have a free plan.

Braintrust and Confident AI work with OpenTelemetry, as LangSmith does.

Confident AI works with LlamaIndex, as LangSmith does.

From each tool's own website and from published reviews. Each tool's page says when its facts were checked.