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3 models	Pe Perplexity AI Sonar Pro View →	Op OpenAI GPT-5.5 View →	Cl Anthropic Claude Fable 5 View →
Maker	Perplexity AI	OpenAI	Anthropic
Tier	Flagship	Flagship	Flagship
Status	Default	Default	Active
Context window	200K ctx	1M ctx	1M ctx
Knowledge cutoff	—	Jan 1, 2026	Jan 1, 2026
Released	—	Apr 23, 2026	Jun 9, 2026
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Note	Flagship real-time search model: highest-quality cited answers; $3/1M tokens + $5 per 1K searches.	Current flagship general-purpose model; strong coding, reasoning, writing, and agentic tasks. Tiered pricing above a context threshold.	First publicly available Mythos-class model (above Opus); Mythos 5 weights with safety classifiers active. 1M context, $10/$50, highest benchmarks of any GA model. Refusals return stop_reason refusal; mandatory 30-day retention.