# OpenRouter에서 Claude Sonnet 4 발견

Anthropic의 Claude Sonnet 4 최초 기록일은 2026-09-21입니다. 출시일은 아직 확인되지 않았습니다. 근거 링크 6개.

- 유형: 발견
- 개발사: Anthropic
- 확인 수준: 확인됨
- 최초 관측: 2026-09-21T16:06:18.831Z
- 모델: [Claude Sonnet 4](https://alexgetman.com/ko/models/anthropic/claude-sonnet-4-445/)
- 대표 URL: https://alexgetman.com/ko/signals/2026/09/21/claude-sonnet-4/

## 근거 링크

- [OpenRouter](https://openrouter.ai/anthropic/claude-sonnet-4)
- [OpenCode · discovery](https://opencode.ai/data/anthropic/claude-sonnet-4-0)
- [models.dev · catalogue](https://models.dev/#claude-sonnet-4)
- [models.dev · catalogue](https://models.dev/#databricks-claude-sonnet-4)
- [Anthropic · API pricing](https://platform.claude.com/docs/en/about-claude/pricing)
- [Arena · leaderboards](https://www.anthropic.com/news/claude-4)