anthropic

Anthropic: Claude Sonnet 4

The Anthropic: Claude Sonnet 4 is an AI model that can process input from various modalities, including images, text, and files, with a context length of up to 1 million tokens. It also supports the use of tools and reasoning capabilities. This model may be worth considering for those who require a general-purpose language model that can handle multiple input types. At a price point of $3 per million input tokens and $15 per million output tokens, it may be more expensive than some other options. However, its blended benchmark score of 59.1 across four independent benchmarks suggests that it is a reliable choice for tasks such as coding and language translation. Its high scores on the AI-Index Coding and EQBench benchmarks further support this claim.

Quality Score
96/100
price + capability + benchmarks
Input Price
$3.00
per 1M tokens · checked 2026-09-08
Output Price
$15.00
per 1M tokens · checked 2026-09-08
Context Window
1,000,000
tokens

Benchmark results

Independent, published benchmarks. Blended score 59.1 across 4 benchmarks, last refreshed 2026-09-08. How scoring works →

BenchmarkMeasuresScore
Aider Polyglot code editing across languages 64.9
AI Index broad capability composite 27.4
AI Index Coding software engineering tasks 62.0
EQ-Bench emotional understanding in dialogue 66.6
Model ID
anthropic/claude-sonnet-4
Vendor
anthropic
Released
May 2025
Tokenizer
Claude
Input Modalities
image, text, file
Output Modalities
text
Max Output
64,000 tokens
Tool Calling
✓ supported
Structured Output
not supported
Reasoning Mode
✓ supported
Vision
✓ accepts images
Audio
no
Moderated
yes

What it costs in practice

Computed from the current $3.00/M input and $15.00/M output rates. Run your own numbers →

JobTokensCost
Summarize a 50-page report 30k in / 1.5k out $0.11
Classify 1,000 customer emails 500k in / 50k out $2.25
A month of a busy support chatbot 5M in / 2M out $45.00

Similar models

Quick answers

How much does Anthropic: Claude Sonnet 4 cost?
$3.00 per million input tokens and $15.00 per million output tokens.
What is Anthropic: Claude Sonnet 4's context window?
1,000,000 tokens, roughly 1,500 pages of text in a single request.
Does Anthropic: Claude Sonnet 4 support tool calling?
It supports tool calling, a reasoning mode.
Can Anthropic: Claude Sonnet 4 process images?
Yes, it accepts image input.