Claude 3.5 Sonnet
Anthropic · Advanced model strong in coding, writing, reasoning and long-context understanding
200k
Context Window
Top-tier
Coding & Reasoning
Jun 2024
Release
Web + API
Access
Coding
Long Context
Writing
Reasoning
Tool Use
Overview
Claude 3.5 Sonnet is Anthropic’s most capable model to date. It delivers excellent performance in coding, reasoning, writing and instruction following — frequently matching or surpassing larger models while being faster and more efficient.
Key Strengths
-
Leading performance on coding benchmarks (SWE-bench, HumanEval) -
Strong at nuanced, high-quality prose and structured writing -
200,000 token context — suitable for large documents and codebases -
Capable function calling and tool use
Best Use Cases
Software Development
Refactoring, debugging, architecture suggestions
Long-form Content
Reports, essays, documentation, articles
Research & Analysis
Large documents, multi-step reasoning
Agentic Tasks
Planning, tool-using workflows
- Developer
- Anthropic
- Access
- claude.ai • API
- Pricing (API)
- $3 / MTok input • $15 / MTok output
- Speed
- ~2–3× faster than Claude 3 Opus
- Input
- Text + Images
Ready to try Claude 3.5 Sonnet?
One of the most capable and efficient frontier models currently available.
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