LangSmith vs Retool
LLM observability, testing & evaluation — by LangChain
vs. The low-code platform for internal tools, workflows, and AI agents
Pricing tiers
LangSmith
Developer (Free)
Free forever. 5,000 traces/month. 14-day retention. 1 seat. Basic evaluations.
Free
Plus
$39/seat/month. 10k base traces included ($2.50 per 1k overage). Full evaluations, custom dashboards, email support.
$39/mo
Enterprise
Custom. Self-host option, SSO, custom retention, dedicated support.
Custom
Retool
Free
$0. Up to 5 users. Unlimited apps + mobile. 500 workflow runs/month. 5GB DB + storage. 20 hrs/mo Agents.
Free
Team
$10/builder/mo + $5/internal user/mo. 5k workflow runs. Staging env. App releases.
$10/mo
Business
$50/builder/mo + $15/internal user/mo. Audit logs, rich permissions, portals, embedded apps, external user pricing.
$50/mo
Enterprise
Custom. SAML/OIDC SSO, source control, error monitoring, full white-labeling, volume discounts.
Custom
Free-tier quotas head-to-head
Comparing developer on LangSmith vs free on Retool.
| Metric | LangSmith | Retool |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
LangSmith · 14 features
- Alerts — Threshold alerts on latency, cost, eval metrics.
- Annotation Queues — Human-review workflows for trace quality rating.
- Custom Dashboards — Aggregate metrics dashboards per project/tag.
- Datasets — Collect examples → use as eval sets or training data.
- Evaluations — LLM-as-judge, embedding similarity, custom Python evaluators, offline batch eval…
- LangChain Integration — Auto-trace any LangChain/LangGraph run with env var.
- LangGraph Integration — First-class trace + eval for LangGraph agents.
- LLM Tracing — Automatic trace every LLM call + tool call + chain step.
- OpenTelemetry Export — Export traces as OTLP to Datadog/Honeycomb/etc.
- Playground — Test prompts + models inline before deploying.
- Prompt Canvas — Visual prompt editor with live test + eval.
- Prompt Hub — Public + private prompt library with versioning.
- Self-Hosted (Enterprise) — Docker + k8s deployment in your infra.
- Threads + Sessions — Group traces into conversational sessions.
Retool · 14 features
- Apps (Web + Mobile) — Drag-drop UI builder with 100+ components.
- Audit Logs — Track every user action.
- Custom JavaScript — Write JS anywhere in app logic.
- MCP Support — Expose Retool workflows to AI agents.
- Modules — Reusable component bundles.
- Retool Agents — AI agents that use Retool queries + apps as tools.
- Retool Database — Managed Postgres with GUI + collab.
- Retool Embed — Embed apps into your SaaS.
- Retool Forms — Public forms that write to DBs.
- Retool Portals — External-facing apps for customers.
- SAML/OIDC SSO (Ent) — Enterprise auth.
- Source Control (Ent) — Git-backed version control for apps.
- White-labeling (Ent) — Full brand customization.
- Workflows — Cron + webhook-triggered automations with branching.
Developer interfaces
| Kind | LangSmith | Retool |
|---|---|---|
| CLI | LangSmith CLI | — |
| SDK | langsmith-js, langsmith-python | — |
| REST | LangSmith REST API | Retool REST API (Workflows) |
| MCP | LangSmith MCP | Retool MCP |
| OTHER | LangSmith Dashboard | Retool Database, Retool Editor, Self-Hosted (on-prem) |
Staxly is an independent catalog of developer platforms. Outbound links to LangSmith and Retool are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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