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HumanSignal

San Francisco, CA-based AI data labeling company founded in 2019. Private. Operates in the machine learning and data annotation market. Serves data science teams with Label Studio, an open-source data labeling and annotation platform.

Entry price

$99

Starter Cloud · /mo

Plans tracked

1 add-on

Pricing changes

Latest Wk 33 '26

Pricing model

Subscription

Free tier available

Pricing Change History

2 changes

20262 changes

Aug 10, 2026

Packaging

Weekly

HumanSignal: Starter plan restructured to $99/mo + $49/mo per extra user

Starter Cloud pricing changed from a flat $99/user/month rate to a $99/month base price plus $49/month for each additional user.

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Jul 6, 2026

Packaging

Weekly

HumanSignal: Starter plan billing switched to $99/user/month + 1 more change

Enterprise plan's 'Volume user discounts available' messaging removed Starter plan billing unit changed from a flat $99/month base fee plus $49/month per additional user (up to 12 users) to a flat $99/user/month rate (up to 12 users)

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