Model

OpenRouter Claude Sonnet 4.5

OpenRouter pricing data current as of 2026-09-03.

Pricing

default / 1M tokens

$3.00 input · $0.30 cached input · $3.75 cache write · $15.00 output

Batch discount

Not published

Provider

OpenRouter

Family

claude

Model ID

anthropic/claude-sonnet-4.5

Availability

Legacy

Access

OpenRouter

Supports

text · image · file

Context window

1,000,000

Max output

64,000

RAG chatbot cost calculator

Estimate spend for retrieval-heavy assistants that repeatedly pull large context windows.

Coding agent cost calculator

Estimate output-heavy coding assistant usage where long generations can dominate cost.

Added to the model directory.

2026-09-03