Research

Also used for Research 7

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  Perplexity

  AI-powered answers to any question, instantly.

  Search

  Open
  57,355
  607
  4.2
  v2.2 released 6mo ago

  #19 in Trending
  Share
  28,736 www.perplexity.ai
  

  Amr عمرو Amin امين

  🙏 137 karma

  Jan 23, 2025

  Loved the search engine ideas.

  9738 Reply Share Edit Delete Report
• 

  Claude

  Building reliable, interpretable AI systems

  Large Language Models

  Open
  38,061
  451
  4.0
  4.5 released 5d ago

  Free + from $20/mo
  Share
  Claude — v4.5

  Claude Sonnet 4.5 Stronger reasoning & math: fewer slips on multi-step problems. Better coding: clearer fixes, tighter adherence to specs. More reliable tool/JSON calls: fewer schema errors, cleaner arguments. Improved vision: nicer OCR and chart/screenshot understanding. Holds long context better: steadier multi-doc coherence. Lower, steadier latency: snappier responses under load. Calmer alignment: fewer overcautious refusals; safer wording.

  267
• 

  DeepSeek

  Unravel the mystery of AGI with curiosity

  Productivity

  Open
  15,909
  362
  4.4
  v3.2 released 5d ago

  100% Free
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  DeepSeek — v3.2

  Introduced DeepSeek Sparse Attention (DSA) for more efficient long-context handling. API cost reduced by ~50% compared to V3.1. Improved benchmarks in math/reasoning (e.g., AIME up), with small trade-offs in some knowledge tasks. Both deepseek-chat and deepseek-reasoner models upgraded to V3.2 weights. Added native support/optimizations for Chinese accelerators (Huawei Ascend, Cambricon, Hygon) alongside Nvidia GPUs.

  156