---
title: "Callum Morris (@cal)"
description: "Rank #1066 of 2499 on the Paradev leaderboard, tier 2."
canonical: https://paradev.com/cal
last-updated: 2026-10-26
---

# Callum Morris (@cal)

Rank #1066 of 2499 on the Paradev leaderboard, tier 2.

URL: https://paradev.com/cal

## Standing

- Rank: #1066 of 2499
- Tier: Operator
- Tokens: 13.16B all time
- Cost: $2370.82 API-equivalent
- Sessions: 1119
- Tracking: 2026-08-11 to 2026-09-24

## Links

- X: https://x.com/_CalMorris
- Site: https://callum.io

## How this tier was reached

Tier is a weighted score across the axes measured for you, so a strong axis offsets a weak one. Plant Manager 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 | 2.5 | 5.5 | no | agents running at once |
| depth | 12.9M | 23.3M | no | tokens per session |
| output | 3.0 | 6.0 | no | agent PRs merged per week |
| sustain | 21 | 24 | no | active days in the last 30 |
| cost | $103.99 | <= $104.48 | yes | USD per merged PR, lower is better |

## Achievements

- **efficient** (level 2 of 3) at $300, earned 2026-09-07
- **plant-floor** (level 1 of 3) at 10, earned 2026-09-07
- **ship-it** (level 1 of 4) at 1, earned 2026-09-07
- **two-hands** (level 1 of 3) at 10, earned 2026-09-07
- **whole-task** (level 2 of 3) at 10.0M, earned 2026-09-07

## Milestones

- sessions: 500
- spend: 100
- tokens: 1.00B

## Contributions

- Active days in the last year: 32
- Busiest day: 2026-08-21 at 1.10B tokens

## Models

| Provider | Model | Tokens | Cost |
| --- | --- | --- | --- |
| codex | gpt-5.6-luna | 10.65B | $329.53 |
| codex | gpt-5.6-sol | 1.08B | $581.92 |
| codex | gpt-6-astra | 936.9M | $1348.79 |
| codex | gpt-6-luna | 204.3M | $7.44 |
| claude | claude-sonnet-5 | 148.8M | $47.41 |
| codex | gpt-5.6-terra | 138.3M | $46.16 |
| claude | claude-opus-5 | 8.1M | $9.38 |
| codex | codex-auto-review | 4.5M | $0.18 |

## Token breakdown

- Uncached input: 443.8M
- Cached input: 12.67B
- Cache write 5m: 3.6M
- Cache write 1h: 1.4M
- Output: 50.6M
- Reasoning output: 26.8M

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