Anchorhead
Evals for frontier research agents
Founders
- Perbhat KumarFounder/CEO
Same space
Competitors
Closest in what they build, same category.
idlerS25Hill-climb any benchmark, for any model, in any domain.Shared: reinforcement learningActive
HUDW25Platform for building RL environments and evalsShared: reinforcement learningActive
VoicepanelW24Evals for productsShared: eval, evaluation, realActive
Vibrant LabsW24Autonomously scaling environmentsShared: reinforcement learningActive
AviroX25Environments for Long Horizon WorkShared: reinforcement learningActive
Adjacent
Overlapping tags, a different niche.
hillclimbF25Training Data for Recursive Self-ImprovementShared: reinforcement learningActive
Olam LabsS26Building multi-agent simulations for model evals and training.Shared: reinforcement learningActive
CueBenchS26RL post-training for science reasoning and performance engineeringShared: reinforcement learningActive
UnifyW23Models that keep learningShared: reinforcement learningActive
ThetaX25Specialized AI for Every JobShared: reinforcement learningActive
Also from W26 in AI
Batchmates in Winter 2026.
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Brumby (Formerly GrazeMate)W26Robot Cowboys that Herd Cattle with AI DronesActive
TraverseW26Research lab solving non-verifiable workActive
/dev/fastW26/dev/fast is the AI-native code forgeActive
10x ScienceW26The AI-native platform for next-generation protein characterization.Active
21stW26UI building blocks for the agentic internetActive
About Anchorhead
We build custom evals for product teams, as a service. To build these eval sets, we source domain experts and have them turn their work into original, real world evals. For example, our research engineering experts have create tasks involving optimizing an algorithm, deploying a model, or running experiments to solve a novel problem. A grader scores the agent’s performance, and these scores serve as signals during evaluations.
San Francisco, CA, USA
Anchorhead: questions
Which YC batch was Anchorhead in?
Anchorhead was in Y Combinator's Winter 2026 batch (W26).
Is Anchorhead still active?
Y Combinator lists Anchorhead as active.
Who founded Anchorhead?
Anchorhead's founders, as listed on its YC page: Perbhat Kumar (Founder/CEO).
Where is Anchorhead based?
Anchorhead lists San Francisco, CA, USA as its location on YC's directory.
Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.