---
title: "Haibin Zhang (@haibin-zhang)"
description: "Rank #1493 of 2498 on the Paradev leaderboard, tier 1."
canonical: https://paradev.com/haibin-zhang
last-updated: 2026-10-26
---

# Haibin Zhang (@haibin-zhang)

Rank #1493 of 2498 on the Paradev leaderboard, tier 1.

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

## Standing

- Rank: #1493 of 2498
- Tier: Button pusher
- Tokens: 6.70B all time
- Cost: $4013.07 API-equivalent
- Sessions: 414
- Tracking: 2026-09-09 to 2026-10-26

## 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 | 1.0 | 3.1 | no | agents running at once |
| depth | 13.5M | 10.4M | yes | tokens per session |
| output | 1.0 | 2.1 | no | agent PRs merged per week |
| sustain | 19 | 17 | yes | active days in the last 30 |
| cost | $264.02 | <= $315.60 | yes | USD per merged PR, lower is better |

## Contributions

- Active days in the last year: 32
- Busiest day: 2026-09-15 at 603.9M tokens

## Models

| Provider | Model | Tokens | Cost |
| --- | --- | --- | --- |
| claude | claude-opus-5 | 3.15B | $2197.29 |
| claude | claude-opus-5-5 | 1.65B | $1360.62 |
| claude | sonnet-5 | 1.13B | $146.29 |
| claude | claude-sonnet-5 | 493.3M | $146.98 |
| claude | claude-sonnet-5-5 | 106.9M | $40.15 |
| codex | gpt-5.6-sol | 85.4M | $63.16 |
| codex | gpt-5.5 | 29.3M | $7.53 |
| codex | auto | 21.2M | $0.78 |

## Token breakdown

- Uncached input: 9.4M
- Cached input: 6.48B
- Cache write 5m: 119.0M
- Cache write 1h: 79.6M
- Output: 14.5M
- Reasoning output: 3.6M

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