LangSmith

Tracing + eval workflows.

Evals Proprietary Proprietary Checked 2026-08-15

The record

Verified by hand

Category: Evals
License: Proprietary
Open source: No
Self-host: No

Entry price: $39/seat
Rank in category: #1 of 11
Website: www.langchain.com/langsmith
Price check: Confirmed against official page

Our take

In progress

LangSmith sits at #1 in Evals by adoption. The verified facts are above; the full editorial assessment — where it wins, where it doesn't, and what to reach for instead — is being written and will land here.

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Alternatives in Evals

Ranked

Langfuse#2

Open-source tracing + evals.

$29/moMIT

Promptfoo#3

CI-gated eval + red-teaming (OpenAI).

FreeMIT

Braintrust#4

The production quality loop, flat rate.

$249/moProprietary

W&B Weave#5

Tracing + evals from Weights & Biases.

FreeApache-2.0

Sources

Checked 2026-08-15

Official sitewww.langchain.com/langsmith✓ Price verified