---
title: "Justin Zhang (@justin-zhang)"
description: "Rank #2172 of 2498 on the Paradev leaderboard, tier 1."
canonical: https://paradev.com/justin-zhang
last-updated: 2026-10-26
---

# Justin Zhang (@justin-zhang)

Rank #2172 of 2498 on the Paradev leaderboard, tier 1.

URL: https://paradev.com/justin-zhang

## Standing

- Rank: #2172 of 2498
- Tier: Button pusher
- Tokens: 1.33B all time
- Cost: $1032.73 API-equivalent
- Sessions: 330
- Tracking: 2026-08-12 to 2026-09-15

## Links

- Site: https://justinzha.ng

## 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 3 axes, measured over the trailing 30 days.

| Axis | Current | Needed | Met | Measures |
| --- | --- | --- | --- | --- |
| width | 1.0 | 3.1 | no | agents running at once |
| depth | 4.7M | 10.4M | no | tokens per session |
| sustain | 18 | 17 | yes | active days in the last 30 |

## Achievements

- **whole-task** (level 1 of 3) at 2.5M, earned 2026-09-10

## Milestones

- sessions: 100
- spend: 100
- tokens: 100.0M

## Contributions

- Active days in the last year: 23
- Busiest day: 2026-09-10 at 171.5M tokens

## Models

| Provider | Model | Tokens | Cost |
| --- | --- | --- | --- |
| claude | claude-opus-4-8 | 399.4M | $396.35 |
| codex | gpt-5.6-terra | 314.7M | $142.39 |
| codex | gpt-5.6-sol | 274.6M | $237.75 |
| claude | claude-opus-5 | 181.7M | $180.10 |
| claude | claude-sonnet-5 | 145.0M | $72.80 |
| claude | anthropic.claude-haiku-4-5-20251001-v1:0 | 10.3M | $1.66 |
| claude | claude-haiku-4-5-20251001 | 6.5M | $1.53 |
| codex | codex-auto-review | 938.6K | $0.05 |

## Token breakdown

- Uncached input: 29.3M
- Cached input: 1.23B
- Cache write 5m: 68.8M
- Cache write 1h: 0
- Output: 9.4M
- Reasoning output: 4.2M

Published voluntarily by the account holder. Source: https://paradev.com/justin-zhang