Anthropic: Claude Haiku 4.5

Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models.

Context
200K
Max output
64K
Input price
$1/1M tokens
Output price
$5/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode

Details

Model IDanthropic/claude-haiku-4.5
Provider OpenRouter
Creator Anthropic
Familyclaude-haiku
License—
Status—
Typechat
Input modalitiestext, image
Output modalitiestext
Open weight—
Parameters—
Architecture—
Context window200K tokens
Max input—
Max output64K tokens
Reasoning tokens—
Knowledge cutoff—
Release date
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Input
$1
Output
$5
Cache write
—
Cache read
$0.1
Batch in
—
Batch out
—

Family Comparison: claude-haiku

ModelContextMax outPricing
Anthropic: Claude Haiku 5.5 (batch)1M128K$0.05$0.25
Anthropic: Claude Haiku Latest1M128K$0.1$0.5
Anthropic: Claude Haiku 5.51M128K$0.1$0.5
Anthropic: Claude 3 Haiku200K4K$0.25$1.25
Anthropic: Claude Haiku 4.5 (batch)200K64K$0.5$2.5
Anthropic: Claude 3.5 Haiku200K8K$0.8$4
Anthropic: Claude Haiku 4.5200K64K$1$5

API

GET/v1/models/openrouter/anthropic/claude-haiku-4.5

Anthropic: Claude Haiku 4.5

anthropic/claude-haiku-4.5

Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models.

Changes · 4 entries
anthropic/claude-haiku-4.5updateca7a400Nov 2, 2026, 03:02 AM
modalitiesinput["image","text"]→["text","image"]
anthropic/claude-haiku-4.5update1cd659eMar 24, 2026, 04:19 AM
capabilitiesjson modeyes
anthropic/claude-haiku-4.5update2b100acMar 23, 2026, 05:30 AM
model_typechat
release_date2025-10-15
taglineClaude Haiku 4.5 is Anthropic’s fastest and most efficien...
tools["function_calling"]
anthropic/claude-haiku-4.5create7f5c66fMar 21, 2026, 05:16 AM