ChatGPT: Strengths, Limits, and Best Uses

ChatGPT is the tool that put AI assistants on the map for most people. Launched in November 2022, it reached 100 million users in two months. Understanding it well sets a useful baseline for comparing everything else.

What ChatGPT Is

ChatGPT is a conversational AI assistant built by OpenAI. It's powered by OpenAI's GPT models (currently GPT-4o for paid users, GPT-4o-mini for free users) and is accessed through chat.openai.com.

• It's worth separating two things:
• GPT — the underlying language model (a foundation model)
• ChatGPT — the product interface built on top of GPT

OpenAI also licenses GPT directly to developers via API, which means many other products are secretly powered by the same technology.

Core Strengths

Versatility ChatGPT handles an unusually wide range of tasks competently: writing, coding, analysis, brainstorming, math, translation, and summarisation. It's genuinely useful as a generalist assistant.

Strong coding ability GPT-4 and GPT-4o are among the most capable models for writing, explaining, and debugging code.

Web browsing (paid tier) ChatGPT Plus users can enable web search, giving it access to real-time information.

Image generation ([DALL-E](https://openai.com/dall-e-3) integration) Paid users can generate images directly within the chat interface.

Key Limitations

Hallucination tendency Like all LLMs, ChatGPT will confidently produce plausible-sounding false information. This is particularly problematic with citations, statistics, and specific factual claims.

Knowledge cutoff Without web browsing enabled, it won't know about recent events.

Inconsistency Responses to identical prompts can vary significantly. This unpredictability requires workflows to account for review and iteration.

Free vs. Paid

For serious use, the paid tier is worth it. The quality gap between GPT-4o and the free model is substantial.

Best Use Cases for ChatGPT

• Coding assistance — writing functions, debugging, explaining code
• Long-form content drafting — articles, reports, documentation
• Data analysis — with Advanced Data Analysis, it can process CSV files and run Python
• Brainstorming and ideation — its breadth of knowledge makes it a strong creative partner

When to Choose Something Else

• For nuanced writing with strong voice — consider Claude
• For real-time search and citations — consider Perplexity
• For tight integration with Google Workspace — consider Gemini
• For privacy-sensitive tasks — consider a local model like Llama