Perplexity vs LibreChat

The Gateway API put Anthropic, OpenAI, Google, xAI, and Perplexity models behind one endpoint reachable with an existing Perplexity key, and the MCP server became a remote service hosted by Perplexity with no local installation. Since then the traffic has been commercial rather than structural: GPT-5.6 price cuts, a Sol Fast mode, and successive preset re-pointings — low and fast both now run openai/gpt-5.6-luna, with the fast preset carrying priority processing at twice standard token prices. Frozen configurations have to be updated by hand each time.

Perplexity is behaving like an infrastructure vendor rather than an answer engine: the differentiator is the credential and the routing, not the model. The preset churn is the visible cost of that position — when the models underneath are someone else's, keeping a named tier meaningful means re-pointing it whenever the market moves, and passing the migration work to customers who pinned a configuration. Inline citations across the search-backed presets remain the one capability that is distinctly Perplexity's own.

Expect the preset re-pointings to keep arriving at this cadence and the priority-processing tier to spread beyond the fast preset, since a 2x price band is easier to extend than to justify on one preset alone.