external benchmark
Firefox 147 exploits leaderboard
Firefox 147 Working Exploit Rate. Every model the catalog carries a published Firefox 147 exploits value for, ranked by that value.
Share of patched Firefox 147 JavaScript-engine targets for which the model produced a working arbitrary-code-execution exploit.
Firefox 147 exploits ranking
1 model with a published Firefox 147 exploits 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 | Working arbitrary-code-execution rate |
|---|---|---|---|
| 1 |  Claude Mythos 5 | Anthropic | 88.4 |
Evidence key: Observed
Rows are ordered by the value Claude Fable 5 and Claude Mythos 5 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.