Amazon Bedrock is expanding its foundation model (FM) offerings as the generative AI field evolves. Today, we’re excited to announce the availability of Anthropic’s Claude 3.7 Sonnet foundation model in Amazon Bedrock. As Anthropic’s most intelligent model to date, Claude 3.7 Sonnet stands out as their first hybrid reasoning model capable of producing quick responses or extended thinking, meaning it can work through difficult problems using careful, step-by-step reasoning. Additionally, today we are adding Claude 3.7 Sonnet to the list of models used by Amazon Q Developer. Amazon Q is built on Bedrock, and with Amazon Q you can use the most appropriate model for a specific task such as Claude 3.7 Sonnet, for more advanced coding workflows that enable developers to accelerate building across the entire software development lifecycle.

Key highlights of Claude 3.7 Sonnet
Here are several notable features and capabilities of Claude 3.7 Sonnet in Amazon Bedrock.

The first Claude model with hybrid reasoning – Claude 3.7 Sonnet takes a different approach to how models think. Instead of using separate models—one for quick answers and another for solving complex problems—Claude 3.7 Sonnet integrates reasoning as a core capability within a single model. This combination is more similar to how the human brains works. After all, we use the same brain whether we’re answering a simple question or solving a difficult puzzle.

The model has two modes—standard and extended thinking mode—which can be toggled in Amazon Bedrock. In standard mode, Claude 3.7 Sonnet is an improved version of Claude 3.5 Sonnet. In extended thinking mode, Claude 3.7 Sonnet takes additional time to analyze problems in detail, plan solutions, and consider multiple perspectives before providing a response, allowing it to make further gains in performance. You can control speed and cost by choosing when to use reasoning capabilities. Extended thinking tokens count towards the context window and are billed as output tokens.

Anthropic’s most powerful model for coding – Claude 3.7 Sonnet is state-of-the art for coding, excelling in understanding context and creative problem solving, and according to Anthropic, achieves an industry-leading 70.3% for standard mode on SWE-bench Verified. Claude 3.7 Sonnet also performs better than Claude 3.5 Sonnet across the majority of benchmarks. These enhanced capabilities make Claude 3.7 Sonnet ideal for powering AI agents and complex workflows.

Source: https://www.anthropic.com/news/claude-3-7-sonnet

Over 15x longer output capacity than its predecessor – Compared to Claude 3.5 Sonnet, this model offers significantly expanded output length. This enhanced capacity is particularly useful when you explicitly request more detail, ask for multiple examples, or request additional context or background information. To achieve long outputs, try asking for a detailed outline (for writing use cases, you can specify outline detail down to the paragraph level and include word count targets). Then, ask for the response to index its paragraphs to the outline and reiterate the word counts. Claude 3.7 Sonnet supports outputs up to 128K tokens long (up to 64K as generally available and up to 128K as a beta).

Adjustable reasoning budget – You can control the budget for thinking when you use Claude 3.7 Sonnet in Amazon Bedrock. This flexibility helps you weigh the trade-offs between speed, cost, and performance. By allocating more tokens to reasoning for complex problems or limiting tokens for faster responses, you can optimize performance for your specific use case.

Claude 3.7 Sonnet in action
As for any new model, I have to request access in the Amazon Bedrock console. In the navigation pane, I choose Model access under Bedrock configurations. Then, I choose Modify model access to request access for Claude 3.7 Sonnet.

To try Claude 3.7 Sonnet, I choose Chat / Text under Playgrounds in the navigation pane. Then I choose Select model and choose Anthropic under the Categories and Claude 3.7 Sonnet under the Models. To enable the extended thinking mode, I toggle Model reasoning under Configurations. I type the following prompt, and choose Run:

You're the manager of a small restaurant facing these challenges:

Three staff members called in sick for tonight's dinner service
You're expecting a full house (80 seats)
There's a large party of 20 coming at 7 PM
Your main chef is available but two kitchen helpers are among those who called in sick
You have 2 regular servers and 1 trainee available
How would you:

Reorganize the available staff to handle the situation
Prioritize tasks and service
Determine if you need to make any adjustments to reservations
Handle the large party while maintaining service quality
Minimize negative impact on customer experience
Explain your reasoning for each decision and discuss potential trade-offs

Here’s the result with an animated image showing the reasoning process of the model.

To test image-to-text vision capabilities, I upload an image of a detailed architectural site plan created using Amazon Bedrock. I receive a detailed analysis and reasoned insights of this site plan.

Claude 3.7 Sonnet can also be accessed through AWS SDK by using Amazon Bedrock API. To learn more about Claude 3.7 Sonnet’s features and capabilities, visit the Anthropic’s Claude in Amazon Bedrock product detail page.

Get started with Claude 3.7 Sonnet today
Claude 3.7 Sonnet’s enhanced capabilities can benefit multiple industry use cases. Businesses can create advanced AI assistants and agents that interact directly with customers. In fields such as healthcare, it can assist in medical imaging analysis and research summarization, and financial services can benefit from its abilities to solve complex financial modeling problems. For developers, it serves as a coding companion that can review code, explain technical concepts, and suggest improvements across different languages.

Anthropic’s Claude 3.7 Sonnet is available today in the US East (N. Virginia), US East (Ohio), and US West (Oregon) Regions. Check the full Region list for future updates.

Claude 3.7 Sonnet is priced competitively and matches the price of Claude 3.5 Sonnet. For pricing details, refer to the Amazon Bedrock pricing page.

To get started with Claude 3.7 Sonnet in Amazon Bedrock, visit the Amazon Bedrock console and Amazon Bedrock documentation.

— Esra

2/24/2025: Base models screenshot updated.