Startup profile · funding coverage
Labelbox funding, valuation and investors
Reinforcement-learning environments, evaluations and managed enterprise agents.
Keep track of Labelbox
Save this profile to your VCT watchlist for a quick return.
Funding, valuation & investors
Answer-first snapshotLatest funding
Series C
$40M · February 2021
Latest known valuation
$1.25B pre-money
Series E equity plus credit facility; split undisclosed · October 14, 2026
Total disclosed equity funding
$65M
Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.
Current status
private
growth · San Francisco, California
Investors in latest funding
Lead: B Capital Group
Other: Andreessen Horowitz , First Round Capital , Kleiner Perkins
Latest tracked event: Series E equity plus credit facility; split undisclosed (October 14, 2026). It is shown separately because it is not counted as disclosed equity funding.
Overview
Labelbox builds Horizon environments for frontier-model training and Recursion Managed Agents for enterprise workflows. On October 14, 2026 it announced more than $100M in Series E equity and a credit facility at a $1.25B pre-money valuation; the split was not disclosed.
Why Labelbox is interesting
Labelbox sits under every supervised ML stack — data quality remains the bottleneck even in the LLM era where human feedback loops matter as much as pre-training data.
Product & use cases
Horizon supplies simulated work and evaluation infrastructure for AI labs. Recursion runs and grades enterprise workflows. Improvement and performance statements are company claims.
- Computer vision dataset labeling for autonomous systems
- LLM fine-tuning and RLHF human feedback collection
- Model evaluation and error analysis on labeled datasets
- Active learning pipelines to prioritize labeling spend
Key facts
- Series C (Feb 2021): $40M led by B Capital — Labelbox press
- Series B (Feb 2020): $25M led by a16z — Labelbox press
- Training data platform for ML and LLM fine-tuning
Funding history (newest first)
Series E equity plus credit facility; split undisclosed
2026-10-14 > $100M combined financing, not pure equity Valuation: $1.25B pre-money- Infinitum Partners (lead)
- Wipro Ventures (participant)
- Andreessen Horowitz (participant)
- B Capital Group (participant)
- Tau Ventures (participant)
- Snowpoint Ventures (participant)
Source: Read source · labelbox.com
Investors in our directory
Funds linked from Labelbox's profile — open a fund page for stage focus and related deal articles.
Competitive landscape
Edge: Enterprise-grade labeling ops with model-assisted acceleration — reduces cost per label vs. pure manual annotation.
Data labeling commoditized at the low end but remains critical for high-quality ML. Labelbox competes with Scale AI's scale and vertical integration. LLM era shifted demand toward RLHF and evaluation, not just image boxes.
-
Scale AI direct
Dominant data labeling vendor with government and enterprise contracts.
-
Snorkel AI adjacent
Programmatic labeling vs. human annotation focus.
-
SuperAnnotate direct
Computer vision labeling platform.
-
Hive / Appen adjacent
Crowd labeling services.
Notable stories
- Labelbox raised Series B and C in consecutive Februarys (2020, 2021) — riding the computer vision labeling wave before pivoting tooling toward LLM RLHF.
Industries
Market / IPO context
Editorial / static context — not a live quote.
Related funding articles
Venture Capital Tracker pieces that cover Labelbox's financing or category context.
FAQs about Labelbox
Practical answers founders, operators, and investors typically search for.
Last updated:
Editorial note: AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.