YCS25· AI· DevtoolsWafer
AI that makes AI fast
Founders
- Emilio AndereFounder/CEO
- Steven ArellanoCofounder
Same space
Competitors
Closest in what they build, same category.
isoquantF26Self-optimizing inference cloud for faster, cheaper AIShared: inference, optimizingActive
nCompass TechnologiesW24Optimize performance on GPUs - 10x fasterShared: inference, kernel, performanceActive
General InstinctX26Inference Infrastructure for Physical AIShared: inferenceActive
Cumulus LabsW26The Fastest Multimodal Inference OSShared: inference, kernel, gpuActive
Adjacent
Overlapping tags, a different niche.
RunAnywhereW26Fastest inference anywhere: open models on-prem, hosted or on-deviceShared: inference, kernel, serverlessActive
ShadeformS23The GPU Cloud MarketplaceShared: inference, gpuActive
OpenRelayS26Distributed, hardware-agnostic AI inferenceShared: inferenceActive
WebinyW21Open-source framework for building serverless applicationsShared: serverless, open, sourceActive
Unsloth AIS24Open-Source Reinforcement Learning (RL) & Fine-tuning for LLMs.Shared: kernel, llms, openActive
Also from S25 in AI
Batchmates in Summer 2025.
AcrelyS25Enterprise Voice AgentsActive
AdaptionalS25AI-powered insurance claims reviewActive
AgentMailS25Email Inboxes for AI AgentsActive
AlaraS25Procurement Platform for Dental OfficesActive
AlterS25Secure access control and authorization platform for agent workflowsActive
AlturS25Voice AI Agents for Debt CollectionActive
Outside YC
Similar companies on companies.fru.dev.
About Wafer
Wafer builds AI agents that work as autonomous performance engineers, optimizing GPU kernels for AI inference. Our product is serverless and dedicated inference for the world’s fastest open source LLMs, achieved by Wafer's autonomous performance engineers.
San Francisco, CA, USA
Wafer: questions
Which YC batch was Wafer in?
Wafer was in Y Combinator's Summer 2025 batch (S25).
Is Wafer still active?
Y Combinator lists Wafer as active.
Who founded Wafer?
Wafer's founders, as listed on its YC page: Emilio Andere (Founder/CEO), Steven Arellano (Cofounder).
Where is Wafer based?
Wafer 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.