---
title: "yu-matsumura (@mattzn1217)"
description: "Rank #2319 of 2499 on the Paradev leaderboard, tier 1."
canonical: https://paradev.com/mattzn1217
last-updated: 2026-10-26
---

# yu-matsumura (@mattzn1217)

Rank #2319 of 2499 on the Paradev leaderboard, tier 1.

URL: https://paradev.com/mattzn1217

## Standing

- Rank: #2319 of 2499
- Tier: Button pusher
- Tokens: 533.1M all time
- Cost: $809.10 API-equivalent
- Sessions: 126
- Tracking: 2026-07-29 to 2026-09-28

## 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 | 1.9M | 10.4M | no | tokens per session |
| output | 2.0 | 2.1 | no | agent PRs merged per week |
| sustain | 13 | 17 | no | active days in the last 30 |
| cost | $22.22 | <= $315.60 | yes | USD per merged PR, lower is better |

## Achievements

- **efficient** (level 1 of 3) at $750, earned 2026-09-07
- **ship-it** (level 1 of 4) at 1, earned 2026-09-07
- **whole-task** (level 1 of 3) at 2.5M, earned 2026-09-07

## Milestones

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

## Contributions

- Active days in the last year: 31
- Busiest day: 2026-08-13 at 118.3M tokens

## Models

| Provider | Model | Tokens | Cost |
| --- | --- | --- | --- |
| claude | claude-opus-5 | 233.3M | $187.57 |
| claude | claude-fable-5 | 196.4M | $461.38 |
| claude | claude-fable-5-1 | 40.5M | $73.01 |
| claude | claude-opus-5-5 | 35.5M | $40.82 |
| codex | gpt-6-astra | 20.4M | $33.15 |
| codex | gpt-5.6-sol | 3.6M | $5.27 |
| claude | claude-opus-4-8 | 1.8M | $6.37 |
| claude | claude-sonnet-4-6 | 595.8K | $0.92 |

## Token breakdown

- Uncached input: 1.9M
- Cached input: 508.7M
- Cache write 5m: 1.0M
- Cache write 1h: 18.3M
- Output: 3.2M
- Reasoning output: 842.3K

Published voluntarily by the account holder. Source: https://paradev.com/mattzn1217