Anthropic has just presented Claude Sonnet 4.5an evolution that The company defines as its most precise model to date. The focus is in Agentsprogramming and computer use, with the idea of expanding what the previous versions of the Sonnet series already offered. His arrival is interpreted inside an increasingly adjusted struggle: Openai has launched GPT-5 With different levels of capacity and Google continues to bet on Geminiconfiguring a board where each advance generates new expectations.
The family’s trajectory helps to understand the place occupied by this new version. With Sonnet 3.7Anthropic introduced a hybrid reasoning model that marked a remarkable leap in coding, content generation and data analysis. The subsequent arrival of Sonnet 4 He consolidated that bet, reinforcing his position as a practical option for attendees. These improvements made Sonnet into UNa Outstanding Alternative for Programmersand it is from that base where the expectation is now raised about what 4.5 can contribute.
What Anthropic promises with his new model
Sonnet 4.5 introduces improvements designed for agents that require maintaining attention for long periods. According to Anthropic, he is able to sustain the focus during More than 30 hours in complex tasks and admits outputs of up to 64,000 tokens, which expands the capacity of planning and generating code in extensive blocks. The developers have finer controls about the time that the “think” model before responding, which opens margin to balance speed and detail based on the need for each project.
Another of the areas where Sonnet 4.5 seeks to differentiate is in the use of computer and browser. Anthropic points out that the model has reached 61.4% in Osworld, a Benchmark which measures the ability to complete real tasks in a desktop environment. This is a considerable leap compared to 42.2% obtained by Sonnet 4 just a few months ago. The company shows practical examples with its extension of Chrome, where Claude is capable of navigating websites, filling spreadsheets or perform competitive analysis without constant supervision.
Programming is the land where Sonnet 4.5 wants to consolidate its leadership. Anthropic ensures that the model can cover The entire development cycle Software: from initial planning to the refactorization of large projects, through the maintenance and correction of errors. With Claude Code’s support, he seeks to become a stable assistant for technical teams.
The range of Sonnet 4.5 extends to a wide range of applications that, according to Anthropic, make it a model designed for corporate and research environments. The most repeated examples in your presentation include:
- Cybersecurity: deployment of agents that correct failures without human intervention.
- Finance: Constant monitoring of regulatory changes and risk management.
- Productivity: Edition and creation of office files in different formats.
- Investigation: Integration of internal and external data to prepare reports.
- CONTENTS: writing with math understanding and deep semantic analysis.
The company adds that Sonnet 4.5 has passed reviews with external experts to validate its safety and reliability.
Sonnet 4.5 is now available for any user in Claude.AIboth on the web and in iOS and Android applications. In parallel, developers can integrate it into the Claude Developer Platform, in addition to services such as Amazon Bedrock and Google Cloud VerTex AI. The free plan works with a session limit that is restarted every five hours and with a variable number of messages according to the demand. Regarding prices, part of $ 3 per million input tokens and $ 15 per million departure tokens.
Images | Anthropic | Xataka with Gemini 2.5
In Xataka | “The humanoid robots is pure fantasy”: Irobot’s co -founder believes that there is a robotics bubble
GIPHY App Key not set. Please check settings