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Companies

Span

AI code detection and spend tracking for engineering teams

Raised to date

$24.8M

of $24.8M offered across 1 Form D filing

Investors
55
Last filed
May 29, 2026

About

Attuned Corp. operates as Span, an AI-native developer intelligence platform for engineering organizations. Span connects AI coding-agent activity to shipped code and pull requests, classifies how engineering time is allocated, and reports AI tool spend and ROI by team, individual, tool, and model. Its proprietary span-detect-1 model identifies whether shipped code was AI-generated or human-authored at the chunk level across coding tools and languages. The company was founded by J Zac Stein (CEO) and Henry Liu (CTO) and raised $25M in combined seed and Series A funding announced in November 2025 from Alt Capital, Craft Ventures, SV Angel, BoxGroup, and Bling Capital.

span-detect-1, a proprietary model trained on millions of AI and human code samples that detects AI-generated code in shipped commits across every coding tool, letting engineering leaders tie AI coding spend to code that actually reached production rather than to editor telemetry.

Funding

  • EquityFiled May 29, 2026Form D
    $24.8M/ $24.8M

Product

Span

Developer intelligence platform

An AI-native developer intelligence platform that gives engineering leaders observability over how work gets done: agent traces linked to shipped code, AI code detection, engineering allocation, and AI spend and ROI reporting.

  • Agent trace analysis connecting AI-assisted work to shipped code and pull requests
  • AI effectiveness scoring across signals such as prompt quality and agent satisfaction over time
  • AI spend and ROI reporting broken down by team, individual, tool, and model

Built for

Engineering leaders at mid-to-large software organizations; named customers include Ramp, Vanta, Carvana, Intercom, Braze, Writer, URBN, and ClassPass

People on file