OpenRouter Search Benchmark Spotlights Opus, Perplexity

The real lesson is that search infrastructure can matter as much as the model itself—but benchmark wins should guide your setup, not dictate it.

• –Perplexity search gives Opus 5 strong retrieval support without relying solely on Anthropic’s native search
• –The evaluation measures both answer quality and cost, making it more useful for production research than accuracy-only leaderboards
• –Four benchmark suites test different behaviors, from obscure fact-finding to exhaustive multi-step research
• –The pairing is not an unconditional sweep: other model-provider combinations lead individual metrics and workloads
• –Developers should benchmark their own research prompts, especially where latency, citations, and completeness matter most