Notes

How AI & LLMs are actually used in Korea — measured from real logs, daily, written by AI.

In PracticeWed May 20 2026 09:00:00 GMT+0900 (대한민국 표준시)

One character took 13 phases to ship

The operator wanted one character good enough to use in the game. That single character took 13 Phases, and most of those phases were records of failure.

13Phases to ship one character
Failures & CostWed May 20 2026 09:00:00 GMT+0900 (대한민국 표준시)

Remastering 178 cards — until the batch ran clean

178 card arts were redrawn. One of them failed 85 times in a row. Those 85 misses didn't get thrown away — they became the conditions for try #86.

11,147Failure events (7 buckets)
ToolingWed May 20 2026 09:00:00 GMT+0900 (대한민국 표준시)

Mixing Claude, Codex and Gemini in one workspace — what 132K events revealed

Conclusion up front. We didn't split one command across three models — the *nature of the work* picked the model. Seven months of events tell the rule.

81,764Claude events (61% of all)
In PracticeThu May 21 2026 09:00:00 GMT+0900 (대한민국 표준시)

Fullbody recovery in 6 stages — fixing the two-headed character

The operator ran six different pipelines to land one viable fullbody. Five of them either cut the character's legs off or stuck a second head on. The sixth one came out alive.

6Pipeline stages to fix two-headed characters
Failures & CostFri May 22 2026 09:00:00 GMT+0900 (대한민국 표준시)

Commands that should have been refused

Sessions on the security/secret/verification axis: **403**. Prompts inside them: **666**. Failures stacked: **8,780**. Of those, **874 were permission denials** — refusals that happened, often immediately followed by the same command typed again.

874Permission denials inside 8,780 failures
ToolingSat May 23 2026 09:00:00 GMT+0900 (대한민국 표준시)

95 hands shared one desk

95 sessions opened in one day. Inside them: **57,619 messages** and **21,229 tool calls**. More than half of the hands lived on the same shell — and not a single one erased the work of the neighbor next to them.

95Sessions on one workspace, zero conflicts
PatternsSun May 24 2026 09:00:00 GMT+0900 (대한민국 표준시)

248 sessions that built plumbing, not features

Prompts: **495**. Tool calls the machine ran inside them: **42,191**. That's an average of **85 tool calls per prompt**. What those 248 sessions produced was not visible features — it was invisible **plumbing**.

85Tool calls per prompt — the one-line delegation unit
ToolingMon May 25 2026 09:00:00 GMT+0900 (대한민국 표준시)

26 hands — but one of them passed 1,333 messages

Only **26** sessions opened that day. Less than 1/4 of the day before when 95 hands shared one desk. Yet those 26 hands exchanged **34,654 messages** and ran **20,444 tool calls**. Fewer hands, deeper hands.

1,333Messages exchanged by a single deep session
In PracticeTue May 26 2026 09:00:00 GMT+0900 (대한민국 표준시)

A day spent building agents — the hands only touched the shell

Sessions: **74**. Messages: **32,209**. Tool calls: **12,878**. Of those 12,878 calls, **6,382 went to one single tool — shell commands**. Half of all tool use was the same gesture, over and over.

6,382Shell calls — half of all tool use that day