This page may contain stale information. Last updated: 2026-07-01
Overview
- 2026-08-13: In frontier-red-team study, settles ~61% of turf wars by force; 39% unsettled (n=120) (2026-08-13-anthropic-multiagent-venturebeat)
claude-sonnet-4-6 is anthropic’s Sonnet tier model launched February 2026. Superseded as default Sonnet by claude-sonnet-5 (June 30, 2026).
Migration
| Retiring | Replacement |
|---|---|
claude-sonnet-4-20250514 | claude-sonnet-4-6 |
Alias claude-sonnet-4-0 | claude-sonnet-4-6 |