Perplexity Upgrades Deep Research With Opus 4.5 for Paid Users.

Perplexity has announced an upgrade to Deep Research, its long-form research and analysis feature. The company says the updated system now delivers stronger performance on external benchmarks for accuracy and reliability, and it is positioning the improvement as a step forward for professional and high-trust research workflows.

Key details from the announcement:

• Deep Research will now run on Opus 4.5 for Perplexity Max users.
• The rollout is live now for Max users and will expand to Pro users over the coming days.
• Perplexity says the upgrade combines leading foundation models with its proprietary search engine and infrastructure.
• In its own evaluations, the company reports especially strong results in law, medicine, and academic research use cases.
• Perplexity also says it plans to keep upgrading Deep Research to the best available reasoning models as they are released.

For small business owners and builders, this matters because better research reliability can reduce time spent validating information for client work, market analysis, and decision-making. Teams working in regulated or detail-heavy industries may also see value if the improved accuracy holds up in real-world use.