Claude Haiku 4.5
An Active (legacy) Haiku whose alias resolves to claude-haiku-4-5-20251001. It supports manual extended thinking, distinct from Haiku 5.5's adaptive thinking.
Listed as available by vendor
- Vendor
- Anthropic
- Modality
- textimagecode
- Directory associations
- 1
Sources and review scope
Official identity and task scope checked
A specifically named model entry; the sources define what was checked.
Checks cover only the names and tasks supported by the linked sources. They do not verify benchmarks, rankings, licensing, or another tool's current configuration.
Checked:
Article updated:
- Claude Haiku 4.5 overviewChecked: 2026-10-15
Directory matching names
These names match legacy directory records; they are not automatically official aliases or identical snapshots.
Claude Haiku 4.5claude-haiku-4-5claude-haiku-4-5-20251001
Unverified directory associations
Legacy links remain useful for discovery; they do not establish that a tool currently uses this model.
Related models
Other models from the same vendor or modality.
Claude Fable 5.1AnthropicOfficial identity and task scope checkedListed as available by vendorClaude Opus 5.5AnthropicOfficial identity and task scope checkedListed as available by vendorClaude Sonnet 5.5AnthropicOfficial identity and task scope checkedListed as available by vendorClaude Haiku 5.5AnthropicOfficial identity and task scope checkedListed as available by vendor