Claude Haiku 4.5

Anthropic

Anthropic's fastest model with near-frontier intelligence (October 2025). Supports extended thinking and delivers strong coding and agentic performance at the lowest Claude pricing tier.

Strengths

Fastest Claude model with near-frontier intelligence
Lowest Claude pricing ($1/$5) for high-volume workloads
Supports extended thinking despite the speed focus
64K max output and 200K context with vision

Caveats

Lower ceiling than Sonnet/Opus for the hardest tasks
No adaptive thinking (available on Sonnet 4.6 / Opus 4.7)

Vendor: Anthropic
Context Window: 200,000 tokens
Max Output: 64,000 tokens
License: Proprietary
Release Date: 2025-10-01
Training Cutoff: 2025-07-31
Modalities: text
image

Capabilities

Vision

Audio

Video

Tool Use

Resources

API Documentation

Pricing

$1 per 1M input tokens, $5 per 1M output tokens. Prompt caching and Batch API (50% off) available.