Anthropic
LLM
Light
Closed weights
Claude Haiku 5.5
36 days since Anthropic announced it ·
Claude Haiku 5.5 is a closed-weights LLM from Anthropic, announced 7 Oct 2026. It costs $0.10 per 1M input tokens and $0.50 per 1M output tokens. Its context window is 1M tokens.
- Input
- $0.10
- per 1M tokens
- Cache write
- $0.12
- per 1M tokens
- Cache read
- $0.01
- per 1M tokens
- Output
- $0.50
- per 1M tokens
- Context window
- 1M
- tokens
- Parameters
- —
- not disclosed
- Announcement
- anthropic.com/claude-haiku-5-5
- Docs
- platform.claude.com/docs/en/models/haiku-5-5/overview
Our coverage
1 storyAnthropic · Light
closed weights- Claude Haiku 5.5 +357d
- Claude Haiku 4.5
More from Anthropic
All models- Claude Mythos 5.2
- Claude Fable 5.2
- Claude Sonnet 5.5
- Claude Opus 5.5
- Claude Mythos 5.1
- Claude Fable 5.1
- Claude Opus 5
- Claude Sonnet 5
Tools that picked it up
- Claude same day
- Claude Code 2.1.293 same day
- Copilot 1.0.94 +1d
Facts last updated , from Anthropic’s own pages.