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Week 4, 2025
RADAR ARCHIVE
Week 4, 2025
2 tools added to the directory, Jan 20 – 26, 2025.
Added to the directory
(2)
Tested and written up.
Perplexity Sonar Reasoning Pro
Chain-of-thought reasoning model for multi-step logical analysis
Added Jan 21, 2025
Sonar Reasoning Pro exposes explicit chain-of-thought reasoning to solve complex, multi-step problems with transparent intermediate steps
Why:
Sonar Reasoning Pro is Perplexity's option for users who need transparent, step-by-step reasoning rather than just a final answer.
Paid
Best for Complex Reasoning
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DeepSeek R1
The open-weight reasoning model that sparked the efficiency revolution
Added Jan 20, 2025
DeepSeek R1 is a 671B-parameter open-weight reasoning model that matches o1-class performance on math, code, and logic benchmarks through reinforcement learning on verifiable tasks
Why:
R1 proved that open-weight models can match proprietary reasoning systems at a fraction of the cost, making it a landmark for reproducible AI research.
Freemium
Best for Open Reasoning
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