LangSmith vs Zed
LLM observability, testing & evaluation — by LangChain
vs. High-performance code editor, built in Rust, with AI + collaboration
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
Zed
Free
$0. Full editor, extensions, collaboration. AI assistant with BYO API key or limited free tier.
Free
Zed Pro (trial)
$0 limited trial. Zed-hosted AI with Claude/GPT, 150 interactions/mo on Sonnet-tier models.
$0 base (usage-based)
BYO API Key
$0 for Zed. Full AI assistant with your own Claude / GPT / Gemini / Ollama keys — passthrough cost only.
$0 base (usage-based)
Zed Pro
$10/user/mo. 500 Claude Sonnet interactions + unlimited edit-predictions, priority routing.
$10/mo
Zed Business
$20/user/mo. 1,000+ Claude Sonnet interactions, org-level billing, priority support.
$20/mo
Free-tier quotas head-to-head
Comparing developer on LangSmith vs free on Zed.
| Metric | LangSmith | Zed |
|---|---|---|
| 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.
Zed · 20 features
- Agent Panel — Multi-step AI tasks with tool use.
- AI Assistant — Inline edits + agent panel.
- Channels (Multiplayer) — Real-time shared editing.
- Editor — Core Rust-based editor.
- Edit Prediction (Zeta) — Next-edit prediction model.
- Extensions (WASM) — WASM-based extension system.
- GitHub Copilot Support — Works alongside Copilot subscription.
- Git Integration — Diff view, branches, blame.
- Integrated Terminal — Built-in shell.
- LSP Support — Works with all LSP language servers.
- MCP Support — Connect to any MCP server.
- Multibuffer — Edit multiple files in one view.
- Remote Dev (SSH) — Edit remote filesystems natively.
- Screen Share — Share editor view live.
- Sub-16ms Latency — GPU-accelerated rendering.
- Tasks — Configurable build/test/run tasks.
- Themes — Built-in + community themes.
- Tree-sitter Syntax — Incremental parsing for instant highlighting.
- Vim Mode — First-class Vim/Helix bindings.
- Voice Channels — Talk while pair programming.
Developer interfaces
| Kind | LangSmith | Zed |
|---|---|---|
| CLI | LangSmith CLI | zed CLI (shell integration) |
| SDK | langsmith-js, langsmith-python | — |
| REST | LangSmith REST API | — |
| MCP | LangSmith MCP | — |
| OTHER | LangSmith Dashboard | Command Palette (cmd+shift+p), Multiplayer / Channels, Remote Development (SSH), Zed AI Assistant, Zed Editor, Zed Extensions |
Staxly is an independent catalog of developer platforms. Some links to LangSmith and Zed may be affiliate links — Staxly may earn a commission if you sign up through them, at no extra cost to you. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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