LangSmith vs Turso
LLM observability, testing & evaluation — by LangChain
vs. Edge SQLite — libSQL at the speed of light
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
Turso
Free
100 DBs, 5 GB storage, 500M row reads/mo, 10M row writes/mo. No credit card.
Free
Developer
Unlimited DBs, 9 GB storage, 2.5B reads, 25M writes.
$5/mo
Scaler
24 GB storage, 100B reads, 100M writes. Teams + DPA support. Price is annual-billed.
$25/mo
Pro
50 GB storage, 250B reads, 250M writes. Teams, DPA, SSO, BYOK, HIPAA, SOC2, priority support. Annual billed.
$417/mo
Enterprise
White-glove support + unlimited usage + dedicated infra.
Custom
Free-tier quotas head-to-head
Comparing developer on LangSmith vs free on Turso.
| Metric | LangSmith | Turso |
|---|---|---|
| databases | — | 100 DBs |
| row reads month | — | 500000000 reads/month |
| row writes month | — | 10000000 writes/month |
| storage gb | — | 5 GB |
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.
Turso · 11 features
- Branching — Create DB branches from a primary for staging/test envs.
- BYOK Encryption — Bring your own encryption key (Pro+).
- Edge Routing — Requests route automatically to the nearest replica group.
- Embedded Replicas — Client-side local SQLite file that syncs from the primary — reads are <1ms local…
- libSQL — Turso's open-source SQLite fork with HTTP, WebSocket, and multi-writer support.
- libSQL Server (sqld) — Self-hostable server component. Runs libSQL as a service.
- Multi-Database — Create thousands of DBs cheaply — perfect for per-tenant / per-customer isolatio…
- Point-in-Time Restore — Rollback DB to any moment within backup window.
- Scheduled Backups — Automated point-in-time backups.
- SQLite Compatibility — Drop-in SQLite — same SQL dialect, same file format.
- Teams & RBAC — Org-level access control for Scaler+ tiers.
Developer interfaces
| Kind | LangSmith | Turso |
|---|---|---|
| CLI | LangSmith CLI | Turso CLI |
| SDK | langsmith-js, langsmith-python | go-libsql, @libsql/client, libsql-experimental (Python), libsql-rs, libsql-swift |
| REST | LangSmith REST API | libSQL HTTP, Platform API |
| MCP | LangSmith MCP | Turso MCP |
| OTHER | LangSmith Dashboard | libSQL WebSocket, SQLite wire protocol |
Staxly is an independent catalog of developer platforms. Outbound links to LangSmith and Turso are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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