Perplexity
AI-powered answer engine — real-time web search + LLM synthesis with inline citations. Strong research workflow companion.
freemium
Sign inOpenAI's flagship conversational AI. Strong general reasoning, code, and document analysis. GPT-4o multimodal with vision and voice modes.
Cal hasn't reviewed this tool yet.
AI-powered answer engine — real-time web search + LLM synthesis with inline citations. Strong research workflow companion.
freemium
React, share, or leave a comment about ChatGPT. Structured 5-dimension rating ships Phase 3+ per Spec v0.5 Tab 4 (D-22-02).
