ARIMLABS B Verified
RL environment company · Security
- Domains
- Security Long-Horizon
- On X
- @arimlabs ↗
- Tier
- B why
- Snapshot
What ARIMLABS does
ARIMLABS builds RLVR training environments and benchmarks for long-horizon AI agents in cybersecurity, SRE, compilation and STEM, plus LLM safety benchmarking.
- Sells
- RL environments
- Leads with
- Security
- Based in
- Warsaw, Poland
- Team
- 11-25
- Website
- arimlabs.ai ↗
What ARIMLABS sells
Read from ARIMLABS's own website, checked October 11, 2026: the line that puts it in each category.
RL environments
“Carefully calibrated training environments for the agents of tomorrow.”
arimlabs.ai ↗“We measure what frontier models can actually achieve on the bleeding edge of long-horizon, domain-specific tasks”
arimlabs.ai ↗
Also
“Testing for containment failure, deception, and hidden capability in frontier models.”
arimlabs.ai ↗
Domains ARIMLABS covers
Security leads with
“Cyber — offense and defense environments”
arimlabs.ai ↗“Compilation — build, toolchain, and dependency repair”
arimlabs.ai ↗“STEM — verifiable reasoning and problem solving”
arimlabs.ai ↗“SRE — incident response simulations”
arimlabs.ai ↗
ARIMLABS competitors and alternatives
The companies that sell the most of the same things in the same domains, and what they share with ARIMLABS.
- Trajectory Labs Also sells agent safety and verification, evals and RL environments · also in security and coding
- ReasonCore Also sells RL environments and evals · also in science, coding and enterprise work
- BenchFlow Also sells RL environments and evals · also in enterprise work, science and security
- Collinear Also sells RL environments and evals · also in coding, security and enterprise work
- Cua Also sells RL environments and evals · also in enterprise work, coding and science
Tier B
Growing: 11 to 50 people, or $3M+ raised.
How much stands behind a tier: usage, who backs it, a confirmed line from its own site or paper, and a clear read on X. High with three of the four, medium with two, low otherwise.
- team 11-25
- in curated RL directories (3 pts)
How we got to tier B
- Adoption: team 11-25. Tier B.
- On X: unclear, none buzz No move.
- In curated RL directories: 3 points, a floor of none.
- Confirmed: a line from its own site or paper places it.
A clear view on X moves a tier one step up or down; most entries don't move. How tiers work.
Training methods
Methods ARIMLABS uses, offers or builds for, with public evidence: its own website says so, or two independent sites do.
- RLVR Reinforcement Learning with Verifiable Rewards On its own website
“Work from before the lab's pivot to RLVR environments.”
arimlabs.ai
Where ARIMLABS sits
Its domain on the map, live. Hover a logo for its name; click to open it. Open it on the full map
Latest from ARIMLABS on X
@arimlabs ↗Next: browse all environments. Entry from the RL Research daily scrape of public sources, 2026-11-05 snapshot.