# Enabling Claude 3.5 Sonnet Computer Use in QA.tech > Anthropic recently released Claude 3.5 Sonnet with Computer Use. In our opinion, it’s one of the Source: https://qa.tech/blog/enabling-claude-3-5-sonnet-computer-use-in-qa-tech · Published: 2025-09-25 --- Anthropic recently released Claude 3.5 Sonnet with Computer Use. In our opinion, it’s one of the first models that genuinely performs well on UI interfaces. We’ve have also [fine-tuned our own models](https://qa.tech/blog/how-we-fine-tuned-minicpm-to-understand-web-interfaces) for similar tasks, but Claude 3.5 stands out by working effectively with just a screenshot, rather than requiring both the DOM and a screenshot like ours does. This makes it particularly useful for handling less semantic, messier websites. See below how our agent is able to find and purchase an iPhone at apple.com with very limited instructions. **Keeping Costs Down: Managing Tokens** To keep costs in check, we’ve optimized what we send to the models. With solid instructions, we’ve found that there’s no need to include all the previous screenshots in every request, significantly reducing input tokens. This kind of selective context helps maintain efficiency without sacrificing accuracy. **Try It Out** If you’re curious, you can try it yourself. When creating a new test, head to the advanced section and choose “Claude Computer Use.” You can sign up and explore our product for free. [Sign up for QA.tech free version](https://app.qa.tech/auth/sign-up?code=site-signup) For more technical details, see Anthropic’s documentation: [Claude 3.5 Computer Use](https://docs.anthropic.com/en/docs/build-with-claude/computer-use). ‍ The same computer-use capability powers [QA.tech's autonomous testing](https://qa.tech/saas), where agents drive the UI the way a user would. ## Related reading - [QA Agents for E2E Ecommerce Testing](https://qa.tech/industries/ecommerce) - [Dynamic PR Testing with AI Agents](https://qa.tech/product/pr-testing) - [Mobile Testing](https://qa.tech/product/mobile-testing) - [What is a knowledge graph?](https://qa.tech/blog/knowledge-graphs-for-ai-agents) - [Meet us at SaaSiest 2025](https://qa.tech/blog/meet-us-at-saasiest-2025) - [Meet us at Slush 2024](https://qa.tech/blog/meet-us-at-slush-2024)