[Docs]: Reduce onboarding friction in AG2 examples by supporting multiple LLM providers

[shrsv]

Describe the issue

While trying out one of the AG2 examples, I had a few thoughts around improving the initial developer experience — specifically to reduce the friction in reaching a first successful run.

Current State

• The current examples default to using OpenAI (OAI) as the LLM provider (both in README and examples).
• However, OAI requires a paid subscription, which might act as a barrier for first-time users.

Observations & Suggestions

• Consider alternative defaults: Google’s Gemini provides an AI Studio with a generous free tier, which allows users to get started immediately.
• Provider switch mechanism: It may help to provide an easy way for users to switch between providers (e.g., Claude, Gemini, OAI). Even simple code snippets with minimal copy-paste/setup friction could go a long way.

Example config I used to get Gemini working with AG2 for the first:

[
  {
    "model": "gemini-2.0-flash-001",
    "api_key": "<from ai studio>",
    "api_type": "google"
  }
]

And the corresponding setup in code:

seed = 42  # for caching, use None for no caching
llm_config = LLMConfig.from_json(
    path="OAI_CONFIG_LIST",
    seed=seed,
).where(model="gemini-2.0-flash-001")

This took me a 5-7 minutes of trial and error as a first-time user. Ideally - the quick start should be specific enough that there is no possibility of friction in getting it to work.

• Documentation/UI enhancement Possibilities:

  • A step-by-step guide for Gemini (and possibly Claude) would help:
    1. Go to Google AI Studio (or Claude settings)
    2. Get API key
    3. Create config file
    4. Select exact LLM config
    5. Run example
  • A tabbed UI for examples (OAI | Gemini | Claude) might reduce onboarding friction significantly.

• Rationale:

  • Reaching a "first success" quickly is key to adoption.
  • Many developers (esp. personal users or non-enterprise) are increasingly diversifying away from OAI.
  • Anecdotally, in my circles, people use Claude or Gemini more for personal use.
  • Diversity in provider preference should be acknowledged in examples/documentation.

Thanks again for considering this. Happy to iterate or help out further!

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