Claude Haiku 4.5

Anthropic

budget

Capabilities

VisionToolsCodeExtended ThinkingStructured OutputMultilingual

Strengths

Fast and cheap
Good for most simple tasks
Matches Sonnet 4 on coding

Weaknesses

200K context limit
Weaker on complex reasoning

Pricing

Input / 1M tokens

Output / 1M tokens

Context window

200k

Transparency

Open weights

0.0 / 10

Open training data

0.0 / 10

Open methodology

5.0 / 10

Licence openness

3.0 / 10

Provider disclosure

4.0 / 10

FMTI company score

370.0 / 10

Composite:2.4 / 10

Anthropic FMTI 37. No transparency report submitted. Publishes model cards. No training data disclosure.

Sustainability

Inference energy

5.0 / 10

Training footprint

N/A

Provider infrastructure

4.0 / 10

Composite:4.5 / 10

Smaller model = more efficient inference. Anthropic committed to covering 100% grid upgrade costs, water-efficient cooling, energy price offset for ratepayers. No renewable energy target published.

Task Fitness

question answering

74%

code

80%

mathematics

76%

business communication

64%

analysis

72%

extraction

82%

long-form generation

75%

research

50%

reasoning

72%

summarisation

78%

translation

75%

conversation

78%