---
title: "Charles Ma (@charles)"
description: "Rank #1141 of 2498 on the Paradev leaderboard, tier 1."
canonical: https://paradev.com/charles
last-updated: 2026-10-26
---

# Charles Ma (@charles)

Rank #1141 of 2498 on the Paradev leaderboard, tier 1.

URL: https://paradev.com/charles

## Standing

- Rank: #1141 of 2498
- Tier: Button pusher
- Tokens: 11.41B all time
- Cost: $6241.80 API-equivalent
- Sessions: 2046
- Tracking: 2026-07-30 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 | 2.0 | 3.1 | no | agents running at once |
| depth | 3.7M | 10.4M | no | tokens per session |
| output | 4.0 | 2.1 | yes | agent PRs merged per week |
| sustain | 30 | 17 | yes | active days in the last 30 |
| cost | $90.70 | <= $315.60 | yes | USD per merged PR, lower is better |

## Achievements

- **efficient** (level 3 of 3) at $100, earned 2026-09-07
- **ship-it** (level 2 of 4) at 10, earned 2026-09-07
- **two-hands** (level 1 of 3) at 10, earned 2026-09-07
- **whole-task** (level 1 of 3) at 2.5M, earned 2026-09-07

## Milestones

- sessions: 1.0K
- spend: 1.0K
- tokens: 1.00B

## Contributions

- Active days in the last year: 80
- Busiest day: 2026-08-12 at 1.59B tokens

## Models

| Provider | Model | Tokens | Cost |
| --- | --- | --- | --- |
| codex | gpt-6-astra | 2.30B | $2975.61 |
| codex | unknown | 1.83B | $42.67 |
| claude | claude-opus-5 | 1.66B | $1190.21 |
| codex | gpt-6.1-sol | 1.34B | $47.32 |
| codex | gpt-5.6-sol | 1.07B | $740.75 |
| codex | gpt-6-luna | 630.3M | $8.90 |
| claude | claude-opus-5-5 | 540.9M | $201.27 |
| codex | gpt-5.6-luna | 465.4M | $14.45 |

## Token breakdown

- Uncached input: 257.8M
- Cached input: 11.07B
- Cache write 5m: 16.1M
- Cache write 1h: 35.8M
- Output: 31.3M
- Reasoning output: 7.4M

Published voluntarily by the account holder. Source: https://paradev.com/charles