aiaimodel.cards

Claude Haiku 4.5

Language modelPrevious generationCard summarized

What was recently at the frontier is now cheaper and faster

Active (legacy) · retires not before 15 Oct 2026● Re-checked 12 Oct 2026 · 87 facts · 0 corrections · 5 unconfirmedSource: System Card: Claude Haiku 4.5 (39 pp)

Use it via API

$588 /month
$11.76 per 1K requests
RAG over docs: 12K in · 600 out · 50K requests/mo · 30% cached · change
Code exampleCompare

Where to call it

  • Claude APIclaude-haiku-4-5-20251001
  • Amazon Bedrockanthropic.claude-haiku-4-5
  • Google Vertex AIclaude-haiku-4-5@20251001
  • Microsoft Foundry / Azureclaude-haiku-4-5

Supports

  • Image input
  • PDF input
  • Structured outputs
  • Reasoning control
  • Tool calling
  • Web search
  • Prompt caching
  • Batch API
Full feature support

Good for

  • Coding tasks and agentic coding
  • Computer use
  • Agentic uses where many instances run tasks in parallel, where speed matters

Watch out for

Replaced by

Claude Haiku 5.5$0.10 / $0.50

This model: $1.00 / $5.00 per 1M tokens

Compare side by side

Overview

Anthropic · 13Haiku, front

Haiku 4.5

What was recently at the frontier is now cheaper and faster

Cost
$1.00 in
Context
200K
Input / output
$1.00 / $5.00
Max output
64K
Knows up to
February 2025
Released
15 Oct 2025

A hybrid reasoning model in Anthropic's small, fast model class, aimed at coding and computer use. It shows large safety improvements over Claude Haiku 3.5 and compares favorably with other recent Anthropic models. Deployed under the ASL-2 Standard. p.2

claude-haiku-4-5-20251001
Input / output per 1M
$1.00 / $5.00
Context window
200K
Max output
64K
Knows up to
February 2025
Reasoning
Extended
Weights
Closed

About this card. A model card is the maker's own account of a model: what it's for, how it was trained and tested, and where it falls short. This page condenses Anthropic's System Card: Claude Haiku 4.5. Every claim carries its source page.