Claude Sonnet 4.5

claude-sonnet-4-5

Versatile, reliable and balanced — excellent value for code, creativity and reasoning.

CodeCreativityReasoningAnalysisConversation

Technical Specifications

API Identifier	`claude-sonnet-4-5`
Plans	Free Basic Pro
Maximum Context	200 000 tokens
Vision (images)	✓ Yes
Native Web Access	No
Image Generation	No
Input Cost	$3.00 / M tokens
Output Cost	$15.00 / M tokens

Overview

Claude Sonnet 4.5 is the previous version of Anthropic's versatile assistant. It offers an excellent balance between performance and cost, with built-in vision and 200,000 token context. Reliable on most common tasks — code, writing, reasoning — it is a solid cost-effective alternative to Sonnet 4.6 for Basic and Pro plans.

Strengths

Built-in VisionDepthReliabilityCode

Ideal Use Cases

Software Development

Code generation, review, and explanation across all programming languages.

Creative Writing

Articles, scripts, marketing content with a polished style.

Document Analysis

Summarizing and extracting information from large documents.

General Assistance

Complex questions requiring reflection and precision.

Pricing

Input Tokens

$3.00

per million tokens

Output Tokens

$15.00

per million tokens

Related Models

Frequently Asked Questions

What is the difference between Claude Sonnet 4.5 and 4.6?

Claude Sonnet 4.6 offers 1 million tokens of context vs 200K for version 4.5. Sonnet 4.5 remains an excellent alternative at the same price for tasks that do not require very long context.

Is Claude Sonnet 4.5 used for code tasks on Mingo?

Yes, Mingo selects Claude Sonnet 4.5 for code tasks on the Basic plan, alongside Qwen3 Coder and Grok Code Fast.

Does Claude Sonnet 4.5 support image input?

Yes, Claude Sonnet 4.5 integrates vision and can analyze images passed through the Mammouth API.

Use Claude Sonnet 4.5 with Mingo

Mingo automatically routes to Claude Sonnet 4.5 for your code and analysis tasks on the Basic plan.

Try Mingo for free