Anthropic LLM Light Closed weights

Claude Haiku 4.5

393 days since Anthropic announced it · 15 Oct 2025

Claude Haiku 4.5 is a closed-weights LLM from Anthropic, announced 15 Oct 2025. It costs $1 per 1M input tokens and $5 per 1M output tokens. Its context window is 200K tokens.

Input: $1; per 1M tokens
Cache write: $1.25; per 1M tokens
Cache read: $0.10; per 1M tokens
Output: $5; per 1M tokens
Context window: 200K; tokens
Parameters: —; not disclosed

Announcement: anthropic.com/news/claude-haiku-4-5
Docs: platform.claude.com/docs/en/models/haiku-4-5/overview

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Anthropic · Light

closed weights

Claude Haiku 5.5 +357d 7 Oct 2026
Claude Haiku 4.5 15 Oct 2025