Perplexity uses Fable 5.1 as orchestrator with GPT 5.6 as cost-efficient subagents

AravSrinivas · x · 2026-09-02

Perplexity's founder says Fable 5.1 is now the frontier model by a good margin. Perplexity Computer uses it as an orchestrator for high-stakes tasks, while GPT 5.6 (Terra) models serve as cost-efficient subagents, combining Fable's frontier planning with cheaper execution.

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