Start Chatting with Claude 3.7 Sonnet
Use Claude 3.7 Sonnet and its full model family, with more messages every day.
Claude 3.7 Sonnet: Practical Frontier-Level Reasoning
Released on February 24, 2025 as part of the Claude Sonnet lineup, Claude 3.7 Sonnet sits alongside Claude 3.5 Sonnet and Claude Sonnet 4, positioned as an advanced large language model with enhanced reasoning, coding, and problem-solving capabilities.
Designed to support both near-instant responses and extended, step-by-step thinking, it brings practical frontier-level reasoning to a wide range of tasks. These strengths make it well-suited for analytical workflows, complex problem solving, and scenarios that require flexible depth-from quick insights to fully reasoned explanations.
Claude 3.7 Sonnet: Key Specs
Below are Claude 3.7 Sonnet's main specs and how they translate into real-world behavior.
- Context Window - 200,000 tokens: This extensive context capacity allows Claude 3.7 Sonnet to manage long conversations or large documents while maintaining coherence across multi-step tasks.
- Maximum Output Length - 128,000 tokens: The model can generate very long, detailed responses, making it suitable for comprehensive explanations, lengthy reports, and multi-section content created in a single pass.
- Speed and Efficiency - Steady, reliable performance: It delivers responses at a smooth, consistent pace, keeping interactions natural for both conversational and productivity-focused workflows.
- Cost Efficiency - Priced at $3 / $15 per 1M tokens: This mid-to-high pricing tier makes Claude 3.7 Sonnet a solid choice for teams that need stronger reasoning capabilities without moving into premium-cost territory.
- Reasoning and Accuracy - Higher-level reasoning ability: The model handles complex instructions, structured analysis, and nuanced problem-solving with strong clarity and depth.
- Multimodal Capabilities - Supports text, code, and image input, outputs text: It can analyze screenshots, diagrams, and code snippets alongside written prompts, producing clear, informative text responses from mixed content.
Compare Claude 3.7 Sonnet, Claude 3.5 Sonnet, and Claude Sonnet 4
A brief overview of how each model differs in power, speed, and use cases.
| Feature | Claude 3.7 Sonnet | Claude 3.5 Sonnet | Claude Sonnet 4 |
|---|---|---|---|
| Knowledge Cutoff | Oct 2024 | Apr 2024 | Mar 2025 |
| Context Window (Tokens) | 200,000 | 200,000 | 1,000,000 |
| Max Output Tokens | 128,000 | 8,192 | 64,000 |
| Input Modalities | Text, Code, Image | Text, Code, Image | Text, Code, Image |
| Output Modalities | Text | Text | Text |
| Latency (OpenRouter Data) | 0.93s | 1.09s | 1.06s |
| Speed | Medium (low latency) | Medium (higher latency than Claude 3.7 Sonnet) | Medium (low latency) |
| Input / Output Cost per 1M Tokens | $3 / $15 | $3 / $15 | $3 / $15 |
| Reasoning Performance | Very High | High | Very High |
| Coding Performance (on SWE-bench Verified) | 70.30% | 49% | 72.70% |
| Best For | near-instant responses or extended, step-by-step thinking | data science, visual processing and multi-step problem solving tasks | maintaining efficiency and responsiveness in diverse internal and external scenarios |
Best Cases to Use Claude 3.7 Sonnet
Claude 3.7 Sonnet is best for both quick tasks and deep reasoning.
- For students and learners: Use Claude 3.7 Sonnet to get fast explanations or explore detailed breakdowns, helping you understand concepts at the pace you need.
- For developers: Generate quick code suggestions or dive into multi-step logic reviews, making it easier to solve problems ranging from simple fixes to complex workflows.
- For businesses and teams: Produce immediate insights or thorough analyses, supporting decisions that require both speed and accuracy across varied projects.
- For product teams and app builders: Power features that need rapid replies or structured reasoning, enabling adaptable agents that handle both simple requests and multi-step tasks.
- For operations and support workflows: Deliver quick answers for routine issues or detailed guidance for complex cases, improving support quality and responsiveness.
- For content and marketing helpers: Draft ideas quickly or refine content with deeper reasoning, ensuring both fast output and thoughtful, well-structured messaging.
How to Access Claude 3.7 Sonnet
Accessing Claude 3.7 Sonnet is straightforward, and you can choose the method that works best for your workflow.
1. Anthropic API
You can use Claude 3.7 Sonnet directly through the official Anthropic API. This requires an API key and a billing plan, making it ideal for developers who need direct integration into applications, tools, or automated systems.
2. EssayDone AI Chat
For instant access without setup or configuration, Claude 3.7 Sonnet is available through EssayDone AI Chat.
It provides the same underlying model output as the API but in a simple, user-friendly interface-perfect for students, writers, and professionals who want immediate, hassle-free access.
Explore More AI Models
Find the model you need-search or select to open its full profile.
14 models available
FAQ
Here are some frequently asked questions about Claude 3.7 Sonnet.
Yes. Claude 3.7 Sonnet provides higher reasoning capability, delivering strong analytical performance suitable for complex tasks. Its reasoning rating places it among the more advanced models in the Sonnet lineup.
Claude 3.7 Sonnet costs $3 per 1M input tokens and $15 per 1M output tokens. It offers strong performance at the same pricing tier as Claude 3.5 Sonnet, making it a high-value upgrade.
Claude 3.7 Sonnet is optimized for both near-instant responses and extended, step-by-step thinking. It excels in tasks that require rapid interaction as well as those involving detailed reasoning. This makes it ideal for users needing flexibility across conversational, analytical, and technical workflows.
Claude 3.7 Sonnet accepts text, code, and image inputs and produces text outputs. It performs effectively across these modalities, supporting visual and technical analysis while maintaining high text-based reasoning quality.
Claude 3.7 Sonnet improves upon Claude 3.5 Sonnet with faster responses, better accuracy, and more stable reasoning. Claude Sonnet 4 provides even higher capability and the most advanced reasoning in the family, but typically at a higher performance level.
Using Claude 3.7 Sonnet in EssayDone AI Chat means you don't need an API key, don't face daily message limits, and aren't restricted by region. You can access ChatGPT and many other AI models on one platform with a single payment, all at a more affordable price.