Compare AI Models

Versions side by side — rows that differ across these models are highlighted.

4 models	Pe Perplexity AI Sonar Pro View →	Cl Anthropic Claude Fable 5 View →	Op OpenAI GPT-5.5 View →	Qw Alibaba Qwen 3.7 Max View →
Maker	Perplexity AI	Anthropic	OpenAI	Alibaba
Tier	Flagship	Flagship	Flagship	Flagship
Status	Default	Active	Default	Default
Context window	200K ctx	1M ctx	1M ctx	1M ctx
Knowledge cutoff	—	Jan 1, 2026	Jan 1, 2026	—
Released

API string	sonar-pro	claude-fable-5	gpt-5.5	qwen3.7-max

Note	Flagship real-time search model: highest-quality cited answers; $3/1M tokens + $5 per 1K searches.	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.	Current flagship general-purpose model; strong coding, reasoning, writing, and agentic tasks. Tiered pricing above a context threshold.	Current closed-weights flagship; Intelligence Index v4.0 score 56.6 (top Chinese model); lowest reported hallucination rate (22.9%). $2.50/$7.50 per 1M tokens.