xhigh preset uses Claude Opus 5.5
By Steven Van ·
Perplexity's Agent API xhigh preset swaps GPT-5.6 Sol for Claude Opus 5.5, with prompts, tools, token budgets and step limits left as they were.
The Agent API's xhigh preset now runs on Claude Opus 5.5 instead of GPT-5.6 Sol. Perplexity lists the change as a September 2026 changelog entry, with the model ID moving from openai/gpt-5.6-sol to anthropic/claude-opus-5-5.
Prompts, reasoning effort, tools, token budgets and step limits are unchanged.
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