---
title: "Chang Ui Lee (@chang-ui-lee)"
description: "Rank #1089 of 2498 on the Paradev leaderboard, tier 1."
canonical: https://paradev.com/chang-ui-lee
last-updated: 2026-10-26
---

# Chang Ui Lee (@chang-ui-lee)

Rank #1089 of 2498 on the Paradev leaderboard, tier 1.

URL: https://paradev.com/chang-ui-lee

## Standing

- Rank: #1089 of 2498
- Tier: Button pusher
- Tokens: 12.55B all time
- Cost: $8732.74 API-equivalent
- Sessions: 1194
- Tracking: 2026-07-30 to 2026-09-11

## How this tier was reached

Tier is a weighted score across the axes measured for you, so a strong axis offsets a weak one. Operator needs a higher combined score, and cost also caps the tier on its own.
Scored on 5 axes, measured over the trailing 30 days.

| Axis | Current | Needed | Met | Measures |
| --- | --- | --- | --- | --- |
| width | 2.0 | 3.1 | no | agents running at once |
| depth | 7.7M | 10.4M | no | tokens per session |
| output | 1.0 | 2.1 | no | agent PRs merged per week |
| sustain | 29 | 17 | yes | active days in the last 30 |
| cost | $823.73 | <= $315.60 | no | USD per merged PR, lower is better |

## Achievements

- **ship-it** (level 1 of 4) at 1, earned 2026-09-11
- **thirty** (level 1 of 3) at 30, earned 2026-09-11
- **two-hands** (level 1 of 3) at 10, earned 2026-09-11
- **whole-task** (level 1 of 3) at 2.5M, earned 2026-09-11

## Milestones

- sessions: 1.0K
- spend: 1.0K
- tokens: 10.00B

## Contributions

- Active days in the last year: 43
- Busiest day: 2026-08-11 at 1.15B tokens

## Models

| Provider | Model | Tokens | Cost |
| --- | --- | --- | --- |
| claude | claude-opus-5 | 8.24B | $6506.39 |
| claude | claude-sonnet-5 | 3.90B | $1498.55 |
| claude | claude-fable-5 | 403.2M | $722.46 |
| codex | gpt-5.6-sol | 6.8M | $4.34 |
| claude | claude-haiku-4-5-20251001 | 3.9M | $0.99 |

## Token breakdown

- Uncached input: 419.2K
- Cached input: 12.27B
- Cache write 5m: 36.7M
- Cache write 1h: 184.7M
- Output: 54.5M
- Reasoning output: 11.6M

Published voluntarily by the account holder. Source: https://paradev.com/chang-ui-lee