Claude Haiku 4.5 is an AI model from Anthropic. Claude Haiku 4.5 with reasoning mode enabled, providing step-by-step thinking in a compact, fast model.
Specifications
Canonical IDanthropic-claude-4-5-haiku-reasoning
StatusActive
CreatorAnthropicAnthropic
Benchmarks
Intelligence Index
37.1
#94
Coding Index
32.6
#96
Math Index
83.7
#51
MMLU-Pro
0.8
#153
GPQA
0.7
#214
HLE
0.1
#149
LiveCodeBench
0.6
#105
IFBench
0.5
#130
Time to First Token
12.46s
#455
SciCode
0.4
#52
AIME 2025
0.8
#51
LCR
0.7
#17
TerminalBench Hard
0.3
#104
TAU2
0.5
#162
Output TPS

Capabilities

Input0/5
Text·
Image·
Audio·
Video·
PDF·
Output0/5
Text·
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Claude Haiku 4.5200K$1.00$5.00Deprecating
Claude Haiku 4.5Current
Claude Haiku 3.5200K$0.800$4.00Available
Claude Haiku 3200K$0.250$1.25Deprecated
Claude Haiku200K$1.00$5.00Available

Other Models

ModelTierReleasedContextInput / 1MOutput / 1M
Claude Fable 5Fable1.0M$10.00$50.00
Claude Mythos 5Mythos1.0M$10.00$50.00
Claude Opus 4.8Opus1.0M$5.00$25.00
Claude Opus 4.8 FastOpus1.0M$10.00$50.00
Claude Opus 4.7 FastOpus1.0M$30.00$150.00
Claude Opus 4.7Opus1.0M$5.00$25.00
Claude Sonnet 4.6Sonnet1.0M$3.00$15.00
Claude Opus 4.6Opus1.0M$5.00$25.00
Claude Opus 4.5Opus410K$5.00$25.00
Claude Sonnet 4.5Sonnet1.0M$3.00$15.00

Model IDs

anthropic-claude-4-5-haiku-reasoning
claude-4-5-haiku-reasoning