# xhigh preset uses Claude Opus 5.5

By Steven Van · 2026-09-01

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](<https://creatorstoolbox.com/tools/perplexity>) lists the change as [a September 2026 changelog entry](<https://docs.perplexity.ai/changelog#september-2026>), 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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Sources

[Original source](<https://docs.perplexity.ai/changelog#september-2026>)

[Read xhigh preset uses Claude Opus 5.5 on Creators Toolbox](<https://creatorstoolbox.com/blog/perplexity-xhigh-preset-uses-claude-opus-5-5>)

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Canonical source: https://creatorstoolbox.com/blog/perplexity-xhigh-preset-uses-claude-opus-5-5