CoArena

YC S26 · Active · The biggest crowdsourced benchmark for Computer-Use

Competitors

Companies closest to CoArena
Company	Category	Status	Program
Design ArenaShared: crowdsourced benchmarkActiveAI	AI	Active	YCS25
Sepal AIShared: data labeling, reinforcement learning, aiopsAcquiredAI, Data	AI, Data	Acquired	YCS24
MarkovShared: data labeling, reinforcement learning, computerActiveAI, Data, Devtools	AI, Data, Devtools	Active	YCS26
SpadeShared: data labeling, machine learning, modelActiveAI, Data	AI, Data	Active	YCW22
LightlyShared: data labeling, machine learning, sameActiveAI, Data, Devtools	AI, Data, Devtools	Active	YCS21

Adjacent

Companies next to CoArena
Company	Category	Status	Program
KairosShared: reinforcement learning, aiops, machine learningActiveAI, Devtools	AI, Devtools	Active	YCX25
CartpoleShared: data labeling, reinforcement learning, modelActiveAI, Data	AI, Data	Active	YCX25
mlopShared: aiops, machine learning, modelActiveAI, Devtools	AI, Devtools	Active	YCX25
Ooak DataShared: real work, reinforcement learning, agentActiveAI	AI	Active	YCS26
Perit.AIShared: data labeling, labsActiveAI, Data	AI, Data	Active	YCF26

Also from S26 in AI

All of S26

Company	Category	Status
DatoricThe secure training data R&D engine for physical AIActiveAI, Data	AI, Data	Active
hiloopAutoresearch as a service: we solve your hardest measurable problemsActiveAI, Devtools	AI, Devtools	Active
Agnost AIWe find where AI agents fail, then train better models to run them.ActiveAI, Data, Devtools	AI, Data, Devtools	Active
BelvedirThe custom AI model factory.ActiveAI	AI	Active
CueBenchRL post-training for science reasoning and performance engineeringActiveAI, Data	AI, Data	Active
DeepReach Inc.Network for Physical AI Data BusinessActiveAI	AI	Active

Founders

Prateek JannuFounder/CEO
Nitish KovuruFounder

About CoArena

CoArena is a live arena where anyone can use the world's top computer-use models racing two of them on the same real computer task and judging which one did it better. Every battle becomes something the AI labs can't build themselves, an honest test of their agents on real work, and the data to make them better.

YC batch: S26 · Summer 2026
Status, per YC: Active
Category: AI, Data, Developer tools
Team size: 2
Location: San Francisco, CA, USA
Founded: 2026
Checked: 33m ago

YC tags: AIOps, Artificial Intelligence, Machine Learning, Reinforcement Learning, Data Labeling

CoArena in S26: 231 companies, 88% AI

CoArena: questions

Which YC batch was CoArena in?

CoArena was in Y Combinator's Summer 2026 batch (S26).

Is CoArena still active?

Y Combinator lists CoArena as active.

Who founded CoArena?

CoArena's founders, as listed on its YC page: Prateek Jannu (Founder/CEO), Nitish Kovuru (Founder).

Where is CoArena based?

CoArena lists San Francisco, CA, USA as its location on YC's directory.

Sources: each program's public company list, read twice a week. Not affiliated with Y Combinator or any other program. Logos via logo.dev; trademarks belong to their owners.