Anthropic has released a Claude Sonnet model that can make plans, use tools like browsers and terminals, and run autonomously at a level that required larger and more expensive models a few months ago. Complete the form to unlock this article and enjoy unlimited free access to all PYMNTS content — no additional logins required. By completing this form, you agree to receive marketing communications from PYMNTS and to the sharing of your information with our sponsor, if applicable, in accordance with our Privacy Policy and Terms and Conditions.

The new Claude Sonnet 5 is now the default model for Anthropic’s Free and Pro plans, and it is available on Max, Team and Enterprise plans, the company said in a Tuesday (June 30) press release. After its introductory price of $2 per million input tokens and $10 per million output tokens through Aug. 31, Claude Sonnet 5 will be available for standard pricing of $3 per million input tokens and $15 per million output tokens, according to the release. Claude Sonnet 5 is built to be “the most agentic Sonnet model yet” and is closer to Anthropic’s Opus-class models, which have recently made the clearest gains in agentic capabilities, per the release. “Sonnet 5 narrows the gap: its performance is close to that of Opus 4.8, but at lower prices,” Anthropic said in the release. “It’s a substantial improvement over its predecessor, Sonnet 4.6, on important aspects of agentic performance like reasoning, tool use, coding and knowledge work.” Anthropic announced in another Tuesday press release that it now offers an artificial intelligence workbench for scientists called Claude Science. Claude Science builds on the company’s efforts in the life sciences it launched last fall. It is an app that integrates tools and packages commonly used by scientists, produces auditable artifacts and provides flexible access to computing resources, according to the release. “Claude Science brings these fragmented tools into a single research environment where scientists can conduct all stages of their work,” Anthropic said in the release. “It helps you analyze literature and execute multi-step research, produces detailed artifacts, and lets you iteratively refine figures and manuscripts until they’re ready for publication. Every output carries an auditable history of how it was made, so you can validate and reproduce the results.” PYMNTS reported in January that Anthropic was pushing deeper into life sciences and positioning its models as research partners embedded in scientific environments, connected to platforms like PubMed, Benchling and ClinicalTrials.gov. Anthropic Cuts AI Agent Costs With Claude Sonnet 5 Rollout Rising Production Costs Drive Up Fourth of July Cookout Prices Banks Gain New Fraud Tools as House Panel Advances Payments Bills Supreme Court Takes Up Apple Appeal in Epic Games Fight