Home Companies Magnitude Magnitude Active · Run open models as fast as your hardware allows
7 signal of 100 · rising 5
went through YC Program · this site +4 team of 2 Team size · YC's directory +2.5 A sum of public facts, not a judgement and not investment advice.
Competitors AI RunAnywhere Shared: open model, infrastructure, opencode AI Munito AI Shared: open model, infrastructure, inference AI .Wave Shared: inference engine, infrastructure, run AI Lucebox Shared: inference engine, hardware, opencode AI OpenVector Shared: inference engine, infrastructure, hardware Other Positron Shared: hardware, model, inference Other Infinity Shared: nvidia, tune, inference Companies closest to Magnitude Company Category Status Program RunAnywhere Shared: open model, infrastructure, opencode YC W26 · · AI, Devtools AI, Devtools YC W26 Munito AI Shared: open model, infrastructure, inference YC F26 · · AI, Devtools AI, Devtools YC F26 .Wave Shared: inference engine, infrastructure, run YC W25 · · AI, Devtools AI, Devtools YC W25 Lucebox Shared: inference engine, hardware, opencode YC W27 · · AI, Devtools AI, Devtools YC W27 OpenVector Shared: inference engine, infrastructure, hardware YC S26 · · AI, Devtools AI, Devtools YC S26 Positron not in a program here Shared: hardware, model, inference Elsewhere · Other Other Elsewhere Infinity not in a program here Shared: nvidia, tune, inference Elsewhere · Other Other Elsewhere
Adjacent Companies next to Magnitude Company Category Status Program Kailash Labs Shared: open model, run YC F26 · · AI, Data AI, Data YC F26 G Greenthread Shared: inference engine Antler 2026 · Not stated · AI AI Not stated Antler 2026 TraceRoot.AI Shared: infrastructure, open, find YC S25 · · AI, Devtools AI, Devtools YC S25 nCompass Technologies Shared: inference engine, cpu, kernel YC W24 · · AI, Devtools AI, Devtools YC W24 ggml Shared: run, model AI Grant Batch 2 · Not stated · AI AI Not stated AI Grant Batch 2
Company Category Status Manufact Cloud infrastructure for MCP servers and Claude / ChatGPT plugins. team of 5 hiring · AI, Devtools AI, Devtools Cactus Compute Automation Foundation Models For Tiny Devices team of 8 · AI, Devtools AI, Devtools Dedalus Labs Persistent computers for AI agents team of 8 hiring · AI, Devtools AI, Devtools KERNEL Crazy fast, open source infra for AI agents to use the Internet team of 22 · AI, Devtools AI, Devtools stagewise The makers of Klex Bots, your own team of digital coworkers. team of 3 · AI, Devtools AI, Devtools AgentMail Email Inboxes for AI Agents team of 10 hiring · AI, Devtools AI, Devtools
Founders TG Tom Greenwald Founder/CEO AL Anders Lie Founder/CTO About Magnitude Magnitude is an open source inference engine that tunes its kernels on your hardware to find the fastest way to run each model. It's over 2x faster than Ollama and works on Apple Silicon, NVIDIA, AMD, or just a CPU. One click connects it to the agent you already use (Pi, OpenCode, Hermes, Codex, and more)
YC batch S25 · Summer 2025 Status, per YC Active Category AI, Developer tools Team size 2 Location San Francisco, CA, USA Founded 2025 Checked 13h ago YC tags: Developer Tools , Open Source , Infrastructure , AI
Changes seen Tags Oct 19, 2026
No longer tagged Artificial Intelligence.
One-liner Oct 5, 2026
Rewrote its one-liner; it read "Open source inference server for local models"
Magnitude in S25: 166 companies, 92% AI
Magnitude: questions Which YC batch was Magnitude in? Magnitude was in Y Combinator's Summer 2025 batch (S25).
Is Magnitude still active? Y Combinator lists Magnitude as active.
Who founded Magnitude? Magnitude's founders, as listed on its YC page: Tom Greenwald (Founder/CEO), Anders Lie (Founder/CTO).
Where is Magnitude based? Magnitude lists San Francisco, CA, USA as its location on YC's directory.
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