From the source
Perplexity's Agent API and Router API now support the perplexity/nemotron-3-ultra-550b-a55b model at the stated pricing.
Perplexity· 27 AugNVIDIA Nemotron 3 Ultra
NVIDIA Nemotron 3 Ultra now available via Agent and Router APIs
Capability change
From the source
The Agent API and Router API now support perplexity/nemotron-3-ultra-550b-a55b at $0.25 per million input or cached-input tokens and $2.50 per million output tokens.
docs.perplexity.ai