external benchmark
The Last Ones completion leaderboard
The Last Ones Cyber Range Completion Rate. Every model the catalog carries a published The Last Ones completion value for, ranked by that value.
Share of runs that completed the 32-step cyber range within the 100-million-token limit.
The Last Ones completion ranking
3 models with a published The Last Ones completion value, ordered by that value, highest first. Models the source has not scored on this benchmark are not listed — they are unmeasured, not last.
| Rank | Model | Provider | Completion rate |
|---|---|---|---|
| 1 |  GPT-5.6 Sol | OpenAI | 70 |
| 2 |  Claude Mythos 5 | Anthropic | 60 |
| 3 |  Kimi K3 | Moonshot AI | 10 |
Evidence key: Observed
Rows are ordered by the value UK AISI and CAISI Preliminary Assessment of Kimi K3's Cyber Capabilities published, highest first. The source does not state whether a higher value is the better result, so this page does not either: for a benchmark that measures a rate of failure, read the table from the bottom.