YC active company list audit

Magnitude

Magnitude: Frontier coding at half the cost. Headquartered in San Francisco, CA, United States. Current operating status: active.

Oomira checked this YC company record against source evidence and keeps the current facts, observed dates, and provenance visible before the interactive app loads.

20 facts4 sources2 superseded claims

What changed in the audit

external name

Sidekick -> Magnitude
2026-06-12 · yc-oss record id 30660: field "former_names" includes "Sidekick"

external name

Sagekit -> Magnitude
2026-06-12 · yc-oss record id 30660: field "former_names" includes "Sagekit"

Summary: Frontier coding at half the cost
Description: Magnitude is a coding agent that runs 90% on open models, escalating to frontier models only when the work demands it.
Website: https://magnitude.dev
Hiring: no
Headquarters: San Francisco, CA, United States
Operating status: active
Industry: B2B

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