Label Studio

What it is for

Label Studio is an open-source labeling + AI-eval desk: you open Trace Review (Turns / Turn Details / Annotation), and Community Edition is Free. Use it when the job is human labels you start at a public $, not when you need Roboflow’s vision factory only.

Soft-note: HumanSignal Cloud on 2026-10-23 prints Starter Cloud from $99/user/month (free trial) + Enterprise Contact sales. We did not find a live $49/user card on humansignal.com/pricing. Distinct from Roboflow and Landing AI — nearest labeling / vision peers already in the catalog.

What makes it unique: the cover is Label Studio / HumanSignal’s official Trace Review (Search turns…, User / Assistant / Tool rows, CONTENT recap, TOKEN USAGE 1.4K / 290, ANNOTATION ASSISTANT turn, VERDICT Pass / Fail, ISSUE TAGS Accuracy & Faithfulness / Tool & Retrieval Ignored tool result, SEVERITY Critical / Major / Minor / Suggestion, EXPECTED BEHAVIOR, COMMENTS) — not a wordmark. The Ignored tool result row itself is ops of Annotation.

Key features

• Turns list — User / Assistant / Tool rows (cover still; labelstud.io). One desk. Cover search_knowledge_base sits here.
• Turn Details — the CONTENT recap + recommendation (cover). A transcript, not a Starter tile.
• Annotation verdict — Pass / Fail (cover). A verdict, not a $99 meter.
• Issue tags — Accuracy / Tool & Retrieval / Reasoning (cover Ignored tool result). Tags, not Community.
• Severity — Critical / Major / Minor / Suggestion (cover). A severity, not Get Started.
• Expected behavior — the “what should the agent have done” box (cover). A rubric, not Enterprise.

Save on the annotation rail is a CTA (not a seventh desk). Starter Cloud / Enterprise tiles stay in Pricing. LLM-as-a-judge extras stay off Key features as AI extras.

Who it's for

Best fit: teams who will run Community Edition at $0 (Apache) while they label a first Trace Review, then Starter Cloud at $99/user/month when they need hosted RBAC and quality workflows — not Enterprise first unless they need SSO / HIPAA and a sales quote.

Pricing

Verified 2026-10-23 (Asia/Shanghai) from humansignal.com/pricing and labelstud.io. Soft-note: the live Starter Cloud card prints “Plans starting at $99/users/mo”; older briefs that cited $49 and $99 did not match this fetch.

• Community Edition — Free, open source (HumanSignal/label-studio). On-prem / local; community Slack / GitHub issues.
• Starter Cloud — from $99/user/month; free trial. Hosted Label Studio: multi-modal labeling, configurable interface, RBAC, quality workflows, automated task distribution.
• Enterprise — Contact sales. SSO (SAML / LDAP), SOC2 / HIPAA cloud or on-prem, LLM-as-a-judge, auto-labeling, 99.9% SLA. Do not invent an Enterprise $.
• Data services — expert annotation / evaluation. Unpriced on the public cards.

Confirm checkout; seats are per user / month on Starter Cloud.

Limitations / costs

• Community has no hosted RBAC / SSO. Those print on Starter Cloud / Enterprise.
• We will not cite $49. The 2026-10-23 Cloud card starts at $99/user/month.
• A labeling / eval desk, not Roboflow’s dataset factory. For that factory see Roboflow.
• Nearest catalog peers are vision / ADE tools, not a second Label Studio clone.

Alternatives

• Roboflow — a vision factory when you want Free $0 / 10 credits / Core $39/mo, not Trace Review Pass / Fail.
• Landing AI — ADE document APIs when you want $1 = 100 credits, not Ignored tool result issue tags.

Official tutorial

Official Label Studio channel video: Getting started with Label Studio (oEmbed author: Label Studio). First-party install + first-project how-to; the Trace Review still is the cover. Also on labelstud.io/videos. We searched @label-studio and @HumanSignal — @label-studio is the product channel we oEmbedded.

Written path: humansignal.com/pricing plus github.com/HumanSignal/label-studio.

Website

https://labelstud.io/

Source

Catalog row curated for AI Tools Nav. Cover is Label Studio / HumanSignal Trace Review (Turns + Turn Details + Annotation Pass / Fail). Dollars checked on humansignal.com/pricing (Community Free; Starter Cloud from $99/user/mo; Enterprise contact sales; no live $49 card). Tutorial oEmbed author: Label Studio (@label-studio).

Last verified

2026-10-23 (Asia/Shanghai) editorial check.