LangSmith Alternatives
4 alternatives to LangSmith — free and paid AI coding tools covering similar jobs, with pricing and standout strengths.
Tool
Arize Phoenix
An open-source LLM observability and evaluation tool built on OpenTelemetry, runnable anywhere.
open sourceobservability
Tool
Braintrust
An end-to-end platform for evaluating, iterating on, and observing LLM apps, with a prompt playground.
freemiumevaluation
Tool
Helicone
Open-source LLM observability and AI gateway with one-line integration — logging, tracing, caching, and cost/latency tracking across providers.
open sourceobservability
Tool
Langfuse
An open-source LLM engineering platform for tracing, evals, prompt management, and metrics.
open sourceobservability