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Worksheet: meet the models (sample, filled in)

An example of what a completed worksheet might look like. Your numbers and observations will differ, that's fine; the point is the comparison, not matching this. (Specs change often; always check the maker's current pricing page.)

The two models I compared

Model A Model B
Name & maker Claude (Anthropic) ChatGPT / GPT (OpenAI)
Step 2, tone warm, plain; stuck to 3 sentences friendly; ran slightly long (4 sentences)
Step 2, really 3 sentences? yes not quite
Step 3, recent-question result said it couldn't be sure of the latest result (admitted a cutoff) gave a confident answer that was out of date
Step 4, context window large (hundreds of thousands of tokens) large (varies by model)
Step 4, price (per 1M tokens) cheaper "small" model vs pricier "frontier" one same pattern: a budget model + a frontier model

Step 5: which would I choose?

  • Free, quick personal chat: either free web tier, pick whichever I find clearer; cost isn't a factor for occasional personal use.
  • Must keep all data on my own computer: neither hosted model, I'd use an open-source model run locally (e.g. via Ollama/LM Studio), because hosted models send data off my machine.

One thing that surprised me

One model admitted it didn't know a recent result while the other made one up confidently, a vivid example of why you can't trust an answer just because it sounds sure (→ RAG + guardrails).