Claude
Anthropic: Claude Opus 4.5, Claude Sonnet 4.5, Claude Haiku 4.5 Best for: clear reasoning, writing, and deep analysis- Strong at structured thinking
- Great for long explanations and nuanced answers
- Reliable for complex problem-solving
ChatGPT
OpenAI: GPT-5 Pro, GPT-5.1 Thinking, GPT-5.1 Instant Best for: general use, coding, and structured output- Excellent at code generation and debugging
- Strong logical flow and step-by-step reasoning
- Good balance between speed and accuracy
Gemini
Google: Gemini 3 Pro, Gemini 2.5 Pro Best for: large context and long documents- Handles very long inputs (PDFs, research, transcripts)
- Ideal for summarization and synthesis
- Strong at multi-document reasoning
Grok
xAI: Grok-4 Best for: real-time and current information- Access to live, up-to-date data
- Useful for trends, news, and current events
- Best when freshness matters
How Models Differ
Models vary across four dimensions:- Speed — how fast responses are generated
- Reasoning depth — how well the model handles complex logic
- Context length — how much information it can remember
- Cost efficiency — how lightweight or intensive the model is

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