Anthropic: Claude Sonnet 4.5

Anthropic · family claude-sonnet-4-5

Identity and capabilities

Status: active
Context window: 1,000,000
Maximum output: 64,000
Image input: Yes
Reasoning: Yes
Tool calling: Yes
First seen: 2026-08-08 09:49:33Z UTC
Last verified: just now

Known source identifiers: anthropic-direct: claude-sonnet-4-5 · openrouter: anthropic/claude-sonnet-4.5 · openrouter: anthropic/claude-sonnet-4.5:batch

Current offers

OpenRouterAggregator

anthropic/claude-sonnet-4.5 · availability available · verified 2 d ago · source official api

Provider limits: context 1,000,000 · maximum output 64,000 · vision Yes · reasoning Yes · tool use Yes

Pricing components as published by the source
Component	Service tier	Context	Price	Unit	As published
Cache write	Standard	Default context	$3.75	per 1M tokens	`0.00000375`
1-hour cache write	Standard	Default context	$6.00	per 1M tokens	`0.000006`
Cached input	Standard	Default context	$0.30	per 1M tokens	`0.0000003`
Input	Standard	Default context	$3.00	per 1M tokens	`0.000003`
Output	Standard	Default context	$15.00	per 1M tokens	`0.000015`

AnthropicAI Developer

claude-sonnet-4-5 · availability available · verified 2 d ago · source official pricing page

Provider limits: context Unknown · maximum output Unknown · vision Unknown · reasoning Unknown · tool use Unknown

Pricing components as published by the source
Component	Service tier	Context	Price	Unit	As published
1-hour cache write	Standard	Default context	$6.00	per 1M tokens	`$6`
5-minute cache write	Standard	Default context	$3.75	per 1M tokens	`$3.75`
Cached input	Standard	Default context	$0.30	per 1M tokens	`$0.30`
Input	Batch	Default context	$1.50	per 1M tokens	`$1.50`
Input	Standard	Default context	$3.00	per 1M tokens	`$3`
Output	Batch	Default context	$7.50	per 1M tokens	`$7.50`
Output	Standard	Default context	$15.00	per 1M tokens	`$15`

Active promotions

No officially confirmed promotion applies to this model.