Claude Opus 4.6

Anthropic

flagship

Capabilities

VisionToolsCodeLong ContextExtended ThinkingStructured OutputMultilingual

Strengths

Deepest reasoning
Best for complex multi-step tasks
1M context at standard pricing

Weaknesses

Most expensive Anthropic model
Slower than Sonnet/Haiku

Pricing

Input / 1M tokens

Output / 1M tokens

$25

Context window

1,000k

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

N/A

Training footprint

N/A

Provider infrastructure

4.0 / 10

Composite:4.0 / 10

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

Task Fitness

Code

92%

Vision

85%

Analyse

95%

Extract

90%

Generate

95%

Summarise

90%

Translate

85%

Conversation

90%