Claude 4 Sonnet
Anthropic · 2025
Anthropic's balanced mid-tier model combining strong capabilities with fast response times.
Quick Facts
Parameters
Undisclosed
Context Window
200K tokens
Modalities
text, image
Open Source
No
Pricing
Free / $20/mo Pro
Released
2025
Developer
Anthropic
About
Claude 4 Sonnet is Anthropic's mid-tier model that strikes an optimal balance between capability, speed, and cost. It offers strong reasoning, coding, and creative writing abilities with a 200K token context window while delivering faster response times than Opus-tier models. Claude 4 Sonnet is designed for professional users who need high-quality AI assistance across a broad range of tasks without the premium cost of Opus. It excels at software development, content creation, document analysis, and research synthesis.
Strengths
- +Strong coding and reasoning at mid-tier pricing
- +Fast response times suitable for real-time workflows
- +Excellent creative writing and content generation
- +200K context for comprehensive document processing
Weaknesses
- −Less capable than Opus on complex reasoning
- −No extended thinking feature
- −Lower rate limits on free tier
Best For
Everyday professional coding and development
Content creation and editing across formats
Document analysis and research summarization
Balanced AI assistant for diverse workflows
Pricing
Free
$0
- Claude 4 Sonnet access
- Limited daily messages
- Basic uploads
Pro
$20/mo
- Unlimited Sonnet
- Claude Opus access
- Projects
API
$3.50/1M input tokens
- Pay-as-you-go
- 200K context
- Vision support
Technical Specs
Parameters
Undisclosed
Context Window
200K tokens
Modalities
text, image
Languages
Open Source
No
Developer
Anthropic
Released: 2025
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