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Perplexity CEO shares early Gemini 4 Carbon evals: a record 0.857 on the WANDR deep-research benchmark at $5.86 per task, ahead of Argon and GPT-6 Astra

Perplexity CEO Aravind Srinivas posted early evals of Gemini 4 Carbon on X: it scored a record 0.857 on Perplexity's Wide-And-Deep-Research (WANDR) long-form research benchmark at $5.86 per task, versus 0.802 ($7.88) for Gemini 4 Argon and 0.735 ($13.34) for GPT-6 Astra. He called Carbon the strongest model Perplexity has seen for long-form research and answer quality, and said it will come to all Pro and Max users inside Perplexity Computer once there is enough token capacity.

Perplexity CEO shares early Gemini 4 Carbon evals: a record 0.857 on the WANDR deep-research benchmark at $5.86 per task, ahead of Argon and GPT-6 Astra

Key Takeaways

  • WANDR scores (per Perplexity): Gemini 4 Carbon 0.857, Gemini 4 Argon 0.802, GPT-6 Astra 0.735, GPT-6.1 Sol 0.654, Claude Opus 5.5 0.647, Claude Fable 5.1 0.601
  • Cheaper too: Carbon costs $5.86 per task, below Argon at $7.88 and GPT-6 Astra at $13.34
  • Cost frontier in Perplexity's chart: DeepSeek V4 Pro 0813 (0.359, $0.75), GPT-6 Sol (0.566, $2.23), GPT-6.1 Sol (0.654, $3.70) and Carbon
  • Claude Sonnet 5.5 scored 0.550 ($2.73) and Grok 4.7 scored 0.528 ($9.30)
  • Not live yet: Carbon reaches Perplexity Pro and Max users only once token capacity allows, and Google still limits early access to cyber defenders in its Fairwind program
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Perplexity: GPT-6 Astra tops WANDR at 0.682, beating Fable 5.1 at lower cost

Perplexity says GPT-6 Astra scored 0.682 on WANDR at about $11.98 per task—the highest of any model they tested. Versus Claude Fable 5.1 it is ~13.5% higher score at ~6.1% lower cost; versus Opus 5 it is ~27.0% higher score at only ~3.3% higher cost.

Key Takeaways

  • WANDR: Astra at 0.682 and ~$11.98/task, highest among models Perplexity tested.
  • Vs Fable 5.1: ~13.5% higher score at ~6.1% lower cost.
  • Vs Opus 5: ~27.0% higher score at only ~3.3% higher cost.
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Perplexity Computer adds Claude Fable 5.1: WANDR 0.601 lead at ~$12.76/task

Perplexity (@perplexity_ai) says Claude Fable 5.1 is now in Perplexity Computer for Pro and Max subscribers. In its August WANDR eval it ranked first at 0.601 and about $12.76 per task—roughly 21% higher score and 37% lower cost than Fable 5.

Key Takeaways

  • Fable 5.1 is live in Perplexity Computer for Pro/Max.
  • August WANDR: 0.601 score at ~$12.76/task, ranked first.
  • About +21% score and -37% cost vs Fable 5.
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