steve sparks
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ContentsAppendix C

Appendix CCheck yourself

The parts

Six quick questions about the parts. Tap an answer to see why.

Check yourself

Real: your answers stay in this page; nothing is stored or sent

  1. When Claude "searches the web," who actually runs the search?

  2. Your message is the only thing the model reads. True or false?

  3. Does the model remember you between conversations?

  4. Fable 5.1 and Mythos 5.1 are different models. True or false?

  5. A small model you download is a free replacement for the largest models. Best answer?

  6. "Model X scored 70%." What should you ask?

Notes (7)
  1. 1Anthropic, “How tool use works,” Claude Platform Docs, https://platform.claude.com/docs/en/agents-and-tools/tool-use/how-tool-use-works (accessed October 26, 2026).
  2. 2Anthropic, “Effective context engineering for AI agents,” Anthropic Engineering, September 29, 2025, https://www.anthropic.com/engineering/effective-context-engineering-for-ai-agents (accessed October 26, 2026).
  3. 3Anthropic, “Use Claude's chat search and memory to build on previous context,” Claude Help Center, https://support.claude.com/en/articles/11817273-use-claude-s-chat-search-and-memory-to-build-on-previous-context (accessed October 26, 2026).
  4. 4Anthropic, “Introducing Claude Fable 5.1 and Claude Mythos 5.1,” September 2026, https://www.anthropic.com/claude-fable-and-mythos-5-1 (accessed October 26, 2026).
  5. 5Marah Abdin, Jyoti Aneja, Hany Awadalla, Ahmed Awadallah, Ammar Ahmad Awan, Nguyen Bach, Amit Bahree, et al., “Phi-3 Technical Report: A Highly Capable Language Model Locally on Your Phone” (preprint, arXiv, April 2024 (v4 2024-08-30)), https://doi.org/10.48550/arXiv.2404.14219.
  6. 6Peter Belcak, Greg Heinrich, Shizhe Diao, Yonggan Fu, Xin Dong, Saurav Muralidharan, Yingyan Celine Lin, and Pavlo Molchanov, “Small Language Models are the Future of Agentic AI” (preprint, arXiv, June 2, 2025), https://doi.org/10.48550/arXiv.2506.02153.
  7. 7Yunbei Zhang, Janet Wang, Yingqiang Ge, Weijie Xu, Jihun Hamm, and Chandan K. Reddy, “Stop Comparing LLM Agents Without Disclosing the Harness” (preprint, arXiv, May 7, 2026), https://doi.org/10.48550/arXiv.2605.23950.

Appendix C · page 1 of 3

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