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Anthropic: Claude Sonnet 4.6

Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. $3 per million input tokens, $15 per million output tokens. 1,000,000 token context window, maximum output of 128,000 tokens. Higher uptime with 5 providers. Includes independent benchmarks from Artificial Analysis.

View source on OpenRouter
Overview

Model specifications

Context
1,000,000 tokens
Maximum output
128,000 tokens
Architecture
text+image+file->text
Tokenizer
Claude
Knowledge cutoff
Not provided
Moderated
Yes
OPENROUTER

Complete pricing

Synchronized OpenRouter rates. Token prices are shown per one million tokens.

Input
$3
/M tokens
Output
$15
/M tokens
Cache read
$0.3
/M tokens
Cache write
$3.75
/M tokens
Cache Write (1h)
$6
/M tokens
Web search
$10
/1K calls
API

Model configuration

Reasoning

Moderated
No
Default parameters
medium
Capabilities
max, high, medium, low
API

Quick start

Call this exact model ID through OpenRouter’s OpenAI-compatible API.

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"anthropic/claude-sonnet-4.6","messages":[{"role":"user","content":"Hello!"}]}'
Capabilities

Input → Output

Input
textimagefile
Output
text
Reasoning

No · max · high · medium · low

API

Supported API parameters

include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatstopstructured_outputstemperaturetool_choicetoolstop_ktop_pverbosity
Available providers

9 providers

Live providers on OpenRouter

Provider availability, latency, throughput and routing can change continuously. Open the source page for current operational data.

OpenRouter

Claude Platform on AWS

unknown
Context
1M
Maximum output
128K
Input
$3.00
Output
$15.00
Cache read
$0.300
Cache write
$3.75

Anthropic

unknown
Context
1M
Maximum output
128K
Input
$3.00
Output
$15.00
Cache read
$0.300
Cache write
$3.75

Amazon Bedrock

unknown
Context
1M
Maximum output
128K
Input
$3.00
Output
$15.00
Cache read
$0.300
Cache write
$3.75

Azure

unknown
Context
1M
Maximum output
128K
Input
$3.00
Output
$15.00
Cache read
$0.300
Cache write
$3.75

Google

unknown
Context
1M
Maximum output
128K
Input
$3.00
Output
$15.00
Cache read
$0.300
Cache write
$3.75

Amazon Bedrock

unknown
Context
1M
Maximum output
128K
Input
$3.30
Output
$16.50
Cache read
$0.330
Cache write
$4.13

Amazon Bedrock

unknown
Context
1M
Maximum output
128K
Input
$3.30
Output
$16.50
Cache read
$0.330
Cache write
$4.13

Google

unknown
Context
1M
Maximum output
128K
Input
$3.30
Output
$16.50
Cache read
$0.330
Cache write
$4.13

Google

unknown
Context
1M
Maximum output
128K
Input
$3.30
Output
$16.50
Cache read
$0.330
Cache write
$4.13
anthropic

models

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anthropic logoanthropic

Claude Opus 5 (Fast)

Fast-mode variant of Opus 5 - identical capabilities with higher output speed at 2x pricing relative to regular Opus 5. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode

Context
1M
Input
text · image · file
Output
text
Input: $10.00Output: $50.00per 1M tokens
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Claude Opus 5

Claude Opus 5 is Anthropic’s flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis...

Context
1M
Input
text · image · file
Output
text
Input: $5.00Output: $25.00per 1M tokens
View model details →
anthropic logoanthropic

Claude Opus 5 (batch)

Claude Opus 5 is Anthropic’s flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis...

Context
1M
Input
text · image · file
Output
text
Input: $2.50Output: $12.50per 1M tokens
View model details →
anthropic logoanthropic

Anthropic: Claude Sonnet 5

Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...

Context
1M
Input
text · image · file
Output
text
Input: $2.00Output: $10.00per 1M tokens
View model details →