Scale AI vs Label Studio (HumanSignal) Pricing (2026)
Compare / Scale AI vs Label Studio (HumanSignal)
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Team size
25 seats

Scale AI vs Label Studio (HumanSignal)

AI Data Labeling pricing comparison · 2026

Scale AI pricing ranges from $0–$100000/project, while Label Studio (HumanSignal) ranges from $0–$638/month. These products use different pricing models (Per-seat subscription vs ), so a direct price comparison isn't meaningful — costs depend on usage volume and mix.

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See pricing on each vendor's site
Above-the-fold path — each link opens the vendor's pricing page in a new tab.
Visit Scale pricing
Discount programs →
Visit Label pricing
Free plan limits → Discount programs →
Compare
2 products · AI Data Labeling
Side-by-side · live
Scale AI
Scale AI pricing is not publicly listed across any of its plans.
verified 10w ago
View pricing →
Label Studio (HumanSignal)
Label Studio by HumanSignal offers a free open-source Community edition and a Starter Clou
verified 8w ago
View pricing →
Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
Usage-based
$0.05 per label
see vendor pricing for volume tiers
Starter Cloud
$30K/yr
year 1 license · $99/seat
REF · 01

Sources & confidence

Every dollar amount and contract clause below traces back to a sourced fact. We don't manufacture composite scores.

Where this data comes from
Vendr · TrustRadius · Reddit · BBB · official docs
Sources 18 sourced facts
18 hidden-cost
Last verified 2mo ago
Confidence Medium confidence
Sources 8 sourced facts
7 hidden-cost · 1 contract
Last verified 1mo ago
Confidence Medium confidence
REF · 02

Plans at a glance

Every tier per product. Lock one to drive the cost row above and reveal a tier-specific outbound CTA.

Tier ladder
Click a tier to lock the cost row to it. Locking surfaces a tier-specific Visit CTA.
REF · 03

Hidden costs

Each cost is severity-ranked, with the dollar range quoted from its source (Vendr, Reddit, TrustRadius, BBB, official docs) — never our estimate.

Beyond the sticker
Severity-ranked, sourced
5 documented
  • Data Preparation and Quality Management
    30-40%
    1 source
  • Integration Engineering
    15-25%
    1 source
  • Ongoing Model Maintenance and Retraining
    15-30%
    1 source
  • Quality Control and Revision Cycles
    1 source
  • Unexpected Scaling of Usage-Based Pricing
    1 source
5 documented
  • Professional Services
    1 source
  • Expert Labeling Services
    1 source
  • White-labeling
    1 source
  • Prompts Interface
    1 source
  • AWS Infrastructure Costs
    1 source
REF · 04

Contract terms

The fine print, surfaced. Green = buyer-friendly. Each clause backed by a quoted source.

Scale
Label
Auto-renewal
—
Yes
Cancellation
—
For Starter Cloud, accounts remain active until the end of the paid billing period after cancellation; for Enterprise, access to entitlements expires if the contract is not renewed or replaced before it ends.
Commitment
—
✓ Specific minimum commitment periods for Starter Cloud are not explicitly detailed beyond the monthly billing cycle, but annual contracts are common for enterprise solutions.
Price escalation
30-50%
—
Can downgrade
—
—
Based on 1 verified source (Vendr · TrustRadius · BBB)
REF · 05

What users say

Aggregated, with sample sizes. We use whichever review platform has data.

User reviews
TrustRadius · Trustpilot · G2
No public ratings yet
Best for
Small batches, prototyping
Watch out
Pay and Compensation
No public ratings yet
Best for
Technical teams self-hosting with no budget
Watch out
Limited Automation in Community Version
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
Visit Scale pricing
Discount programs →
Visit Label pricing
Free plan limits → Discount programs →
License cost is computed from publicly listed plans (real math, list price × seats). Median annual cost is from Vendr's deal flow when available — see source badges. Hidden costs and contract terms each cite their own sources. We do not invent composite scores.
AI Data Labeling

Scale AI

$0–$100000
/project
3 plans
Full pricing breakdown →
VS
AI Data Labeling

Label Studio (HumanSignal)

$0–$638
/month
3 plans · Free tier
Full pricing breakdown →
⚖

Different Pricing Models

Direct price comparison isn't meaningful here — Scale AI uses Per-seat subscription pricing while Label Studio (HumanSignal) uses pricing. Your actual cost will depend on usage volume, team size, or both. Here's each product in its native unit.

Per-seat subscription

Scale AI

$0–$100000 / project
See full Scale AI pricing →
vs

Label Studio (HumanSignal)

$0–$638 / month
See full Label Studio (HumanSignal) pricing →

Scale AI and Label Studio (HumanSignal) both operate in the ai data labeling category.

Plan-by-Plan Pricing

Plan Scale AI Label Studio (HumanSignal)
Rapid (self-serve labeling) Custom Free /month
Studio (managed) Custom $99 /month
Enterprise / GenAI Studio Custom Custom

Hidden Costs

Beyond the sticker price — what catches buyers off guard.

Scale AI 18 hidden costs

critical
Data Preparation and Quality Management 30-40%
high
Integration Engineering 15-25%
high
Ongoing Model Maintenance and Retraining 15-30%
medium
Quality Control and Revision Cycles
high
Unexpected Scaling of Usage-Based Pricing
See all Scale AI hidden costs →

Label Studio (HumanSignal) 7 hidden costs

high
Professional Services
medium
Expert Labeling Services
low
White-labeling
medium
Prompts Interface
high
AWS Infrastructure Costs
See all Label Studio (HumanSignal) hidden costs →

Contract Terms

Term Scale AI Label Studio (HumanSignal)
Auto-renewal — Yes
Cancellation — For Starter Cloud, accounts remain active until the end of the paid billing period after cancellation; for Enterprise, access to entitlements expires if the contract is not renewed or replaced before it ends.
Minimum commitment — Specific minimum commitment periods for Starter Cloud are not explicitly detailed beyond the monthly billing cycle, but annual contracts are common for enterprise solutions.
Price escalation 30-50% —

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Scale AI

Label Studio (HumanSignal)

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