Anthropic and medical knowledge platform OpenEvidence announced a collaboration on Tuesday to bring free AI-powered clinical decision support to physicians across nearly 100 low- and middle-income countries.

The initiative aims to close the information gap in healthcare by providing access to peer-reviewed research and treatment guidelines. While the platform is already free for clinicians in the U.S. and Europe, this expansion targets underserved regions including Uganda, Angola, Sudan, Haiti, and Mongolia. Anthropic will provide the back-end AI infrastructure, while OpenEvidence adapts the tool to local healthcare conditions and regional disease patterns.

Bridging the resource divide

OpenEvidence founder Daniel Nadler stated that access to medical knowledge should not depend on geography. The platform is described as "context adaptive," designed for physicians who may lack reliable electricity but possess smartphones. This design choice addresses specific infrastructural challenges in the target nations.

Daniela Amodei, President of Anthropic, noted that while the technology has advanced sufficiently to support such initiatives, market incentives alone would not drive this expansion without entrepreneurial and philanthropic efforts.

Usage metrics and partnerships

The collaboration follows significant domestic adoption of the platform. In August alone, U.S. clinicians logged 42 million OpenEvidence consultations. This high volume of usage in developed markets demonstrates the platform's scalability before its rollout in resource-constrained environments.

Strategic context

This move aligns with Anthropic's broader strategy in the healthcare sector. Recently, the company partnered with Novo Nordisk A/S (NYSE: NVO) to accelerate drug research using AI. These developments highlight a growing trend of leveraging large language models for specialized professional services beyond general consumer applications.

Anthropic launched Claude Opus 5.5 on Tuesday, introducing a new model line that reduces costs by 40% on typical workloads compared to its predecessor, Claude Opus 5.

The release targets performance parity with previous top-tier models while requiring less compute. Anthropic stated the model generates responses faster and includes significant changes to subscription structures, removing five-hour usage caps for Pro, Max, Team, and seat-based Enterprise subscribers.

Pricing and access changes

The new pricing structure positions Opus 5.5 as a more cost-efficient option for high-volume users. Cache reads are priced significantly lower than standard input tokens, offering potential savings for repeated queries.

A faster mode is available at higher token rates. The removal of five-hour caps addresses a key constraint for heavy users, while a new rate-limit reset feature has been added to the subscription plans.

Safety and capability benchmarks

Anthropic highlighted safety improvements alongside performance gains. External groups, including Frontier Design and METR, evaluated Opus 5.5 before launch. An automated behavioral audit produced the strongest results the company has recorded to date.

The model is described as less likely to take difficult-to-reverse actions than newer models and more resistant to prompt injection than Opus 5. Capabilities in sensitive areas such as biology and cybersecurity include safeguards similar to those used for Claude Fable 5. Vetted organizations can apply to the Life Sciences Verification Program, with expanded access to the Cyber Verification Program planned for coming weeks.

Performance in agentic tasks

Benchmark results show Opus 5.5 performing at or near the top in categories including agentic coding, computer use, and knowledge work. Early testers reported completing large-scale code migrations and audits in hours rather than days. The model also identifies software performance bottlenecks while making fewer changes to application behavior than Opus 5.

One early tester noted the model's writing capabilities align closely with their own style. Anthropic cautioned that small differences in benchmark scores do not necessarily translate into meaningful differences in real-world performance.

Future releases

Anthropic plans to release Claude Sonnet 5.5 and Claude Haiku 5.5 in the coming weeks. These updates will extend the new model family beyond the flagship Opus offering, signaling a broader refresh of the company's product lineup.