MODEL SIGNAL · ANTHROPIC
Claude Haiku 4.5
Claude Haiku 4.5 is Anthropic's fastest, most cost-efficient small model, matching Claude Sonnet 4's performance on coding, computer use, and agent tasks.
CATEGORYGeneral
CONTEXT200K tokens
RELEASEDOctober 15, 2025
Key Features
- 200,000-token context window
- Fastest and most cost-efficient Claude model
- Matches Claude Sonnet 4 performance on coding, computer use, and agent tasks
Read the Model Signal report →
The designed Model Signal report for Claude Haiku 4.5 is still in review. It will publish here after the fact and quality gates clear.