Anthropic Teases Sonnet 5.5 and Haiku 5.5 Within Weeks
Anthropic's mikeyk announced that Claude Sonnet 5.5 and Haiku 5.5 will launch in the coming weeks, bringing performance, efficiency, and safety improvements in line with the Opus 5.5 family.
2026-09-23 ~ 2026-09-23 · 2 related posts
- Episode 1: Claude Opus 5.5 Spotted in Claude Code Ahead of Launch(2026-09-23, 3 posts)
- Episode 2: Anthropic Launches Claude Opus 5.5: Smarter, Faster and 40% Cheaper(2026-09-23, 54 posts)
- Episode 3: Claude Opus 5.5 Benchmarks Lead Across the Board at Half the Price(2026-09-23, 21 posts)
- Episode 4: Anthropic Launches Flagship Opus 5.5 Model(2026-09-23, 5 posts)
- Episode 5: Anthropic Teases Sonnet 5.5 and Haiku 5.5 Within Weeks(2026-09-23, 2 posts)
- Anthropic Teases Claude Sonnet 5.5 and Haiku 5.5 Launching in Coming Weeks — mikeyk · 2026-09-23
- Anthropic confirms Claude Sonnet 5.5 and Haiku 5.5 launching in coming weeks — alexalbert__ · 2026-09-23