Anthropic introduces more affordable, powerful, and efficient AI models, marking a significant advancement in the competitive landscape of artificial intelligence. The company’s latest offering, Opus 4.5, boasts improvements across several key areas, including coding performance and user experience, positioning it as a strong contender against OpenAI’s frontier models. A notable enhancement addresses the issue of abrupt conversation endings in the Claude app, ensuring smoother and more coherent interactions for users.
Key Developments
Anthropic’s Opus 4.5 represents a substantial leap forward in AI capabilities. The new model addresses a common frustration among users of the Claude app: the tendency for conversations to be cut short prematurely. Previously, Claude would terminate a conversation when it reached its context window limit of 200,000 tokens, preventing users from experiencing degraded performance due to the model “forgetting” earlier parts of the discussion. Now, instead of abruptly ending the session, Claude will intelligently summarize earlier exchanges, preserving key information and discarding less relevant details. This enhancement applies to all current Claude models within the app. Developers utilizing Anthropic’s API can also implement similar context management strategies.
This development reflects a growing industry trend towards optimizing user experience in AI-powered applications. By prioritizing coherent and uninterrupted conversations, Anthropic is aiming to enhance user satisfaction and foster more natural interactions with its AI models.
Opus 4.5 Performance Metrics and Efficiencies
Opus 4.5 has demonstrated impressive results in benchmark testing. Notably, it achieved an accuracy score of 80.9 percent on the SWE-Bench Verified benchmark, surpassing OpenAI’s GPT-5.1-Codex-Max (77.9 percent) and Google’s Gemini 3 Pro (76.2 percent). The model excels in agentic coding and agentic tool use, though it lags slightly behind GPT-5.1 in visual reasoning (MMMU). The company also claims that Opus 4.5 is significantly more resistant to prompt injection attacks compared to previous Claude models and competing offerings.
However, arguably the most significant improvement lies in its token efficiency. As Anthropic introduces more affordable, powerful, more efficient models, this is a critical aspect. Opus 4.5 can match the performance of Sonnet 4.5 on SWE-bench Verified with a medium effort level, while using 76% fewer output tokens. At its highest effort level, Opus 4.5 surpasses Sonnet 4.5 performance by 4.3 percentage points, using 48% fewer tokens.
API Updates and Developer Features
Alongside the release of Opus 4.5, Anthropic introduces more affordable, powerful, more efficient tools and features for developers. A new “effort” parameter allows developers to fine-tune the balance between efficacy and token usage when calling the API. This provides greater control over resource allocation and cost optimization.
Furthermore, Claude Code is now integrated into the desktop Claude apps, expanding its accessibility. Previously available via command line, IDE extensions, and the web, Claude Code is now directly accessible within the native desktop interface, which features a tabbed design for switching between the traditional chat experience and the code-focused environment.
Pricing Adjustments and Market Impact
The API pricing for Opus 4.5 has been significantly reduced. The new cost is $5 (input)/$25 (output) per million tokens, a substantial decrease from the previous $15/$75. As Anthropic introduces more affordable, powerful, more efficient options, this price reduction is likely to have a considerable impact on the market, potentially influencing adoption rates and competitive pricing strategies among other AI providers.
This pricing adjustment reflects a growing trend in the AI industry towards more accessible and cost-effective solutions. By lowering the barrier to entry, Anthropic aims to attract a wider range of users and developers, further accelerating the adoption of its AI models. This is especially important as Anthropic introduces more affordable, powerful, more efficient models.
In conclusion, Anthropic introduces more affordable, powerful, more efficient AI with the release of Opus 4.5 and related updates. These advancements, encompassing performance improvements, user experience enhancements, developer tools, and pricing adjustments, position Anthropic as a key player in the rapidly evolving AI landscape. The focus on efficiency, security, and accessibility is likely to drive further innovation and adoption in the industry.
Official guidance: W3C — official guidance for Anthropic introduces cheaper, more powerful, more efficient
Table of contents
Technology Disclaimer: Product specifications and features may change. Always verify current information with official sources before making purchase decisions.
Explore more: related articles.