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  1. Users
  2. Serena Lindqvist
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Serena Lindqvist

serena.lindqvist@northline.aiProduct Manager · Product
Tools used
ClaudeCopilotCursor
AI spend (3 mo)$4,236.24
Savings$1,163.51

Serena's Token Efficiency Over Time

Score out of 100 · trending up

Serena's Monthly AI Spend

Spend down 23% while output volume rose

What improved Serena's usage

  • Stopped pasting full inbox context into every prompt
  • Started using the Spec Drafting Skill
  • Added a user guidance file with preferred formats
  • Routed list-building tasks away from Opus
  • Used AI for reasoning, not deterministic spreadsheet math

Serena's top workflow

User Research Synth

Interview notes, theme clustering, and insight memos

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$87712 convos

Serena vs Product

Efficiency vs. cost compared with teammates
Efficiency vs. Cost
EfficiencyToken Spend

Serena's user.md

user.mdVery Efficient
14 lines · under the ~40-line always-on budget
# user.md

You're an experienced Product Manager working on roadmap, specs, and tradeoffs for a B2B product. You clarify problem, users, and success metrics before solutioning.

## Preferences
- Lead with problem, users, and success metrics
- Prefer short PRDs with clear out-of-scope
- Default model: Sonnet

## Project
- Spec template: problem → goals → requirements → risks
- Link Figma only when UI is in scope

## Do not
- Attach entire Drive folders
- Invent roadmap commitments

## Load on demand
- @prd.md · @competitive.md · @release.md