R0041/2026-04-01/Q001/S02/R01¶
Introducing Claude Sonnet 4.5
Summary¶
| Field | Value |
|---|---|
| Title | Introducing Claude Sonnet 4.5 |
| URL | https://www.anthropic.com/news/claude-sonnet-4-5 |
| Date accessed | 2026-04-01 |
| Publication date | 2025-2026 |
| Author(s) | Various |
| Publication | Various |
Selection Decision¶
Included in evidence base: Yes
Rationale: Primary source on Anthropic model with sycophancy reduction claims