TRACKING · Same-family records
Claude Opus 5 and Claude Fable 5.1
Two versions of the Anthropic Claude line, side by side: event history, verdicts, and lifecycle compared item by item. Each column is the version's own traceable history. This compares records, not overall quality across different uses or capabilities.
Scope: records retained by this site
Sharing a model family does not establish matching tasks, billing or evaluation conditions. This view has no shared task and methodology basis for a direct performance comparison or ranking.
Object scope and comparison basis
Data through · Beijing time
- Claude Opus 5
- The Anthropic Claude version currently represented in the workbench.
- Site record coverage：8/31 – 8/31
- Claude Fable 5.1
- The Anthropic Claude version currently represented in the workbench.
- Site record coverage：9/2 – 9/2
Descriptions come from the registry; names do not imply matching tasks. Counts cover each object's lifecycle, with different starting dates and collection coverage. Event totals do not establish market attention, adoption or capability. Open each record to inspect its dates and sources.
| Record field | Claude Opus 5 → | Claude Fable 5.1 → |
|---|---|---|
| Record status | Claude Opus 51 live | Claude Fable 5.11 live |
| First seen | Claude Opus 58/31 | Claude Fable 5.19/2 |
| Latest entry | Claude Opus 58/31 | Claude Fable 5.19/2 |
| Events retained by this site | Claude Opus 52 | Claude Fable 5.13 |
| Current coverage | Claude Opus 5watch | Claude Fable 5.1watch |
| Predecessors | Claude Opus 5not established | Claude Fable 5.1not established |