Prompting o1 & Reasoning Models

Harness the Power of o1 & Reasoning Models

o1 (and other next-generation reasoning models) can sometimes feel slower or more complex, but they excel at handling large contexts, autonomous planning, and delivering thorough, well-reasoned responses at scale. Below are summarized best practices and prompt patterns gathered from various experts and community members, including swyx and Ben Hylak.

3 Key Observations

1. o1 isn’t a chat model

o1 is more of a “report generator”—it benefits from thorough, upfront context rather than iterative chat. If you only give it a quick question, it won't pull the information it needs from you.

2. Focus on desired output (the "what"), not the "how"

Don’t micromanage or replicate chain-of-thought. Instead, define exactly the deliverable you need (like a new file or architecture) and let o1 figure out its process autonomously.

3. Know o1’s strengths and weaknesses

o1 is excellent at generating large, correct files in one shot, delivering thorough explanations, and providing high-level reasoning. However, it's not (yet) great at creative writing or crafting custom styles.

Detailed Prompting Tips

Additional Insights

Provide more context than you think you need: o1 rarely asks clarifying questions; it relies on you to push context to it. Treat it like onboarding a new team member. The more relevant details it has, the more accurately it can solve complex tasks.

Check for drift in style or voice: Because o1 tends to adopt a formal, report-like tone, explicitly state if you want a friendlier, more casual style. You may need to refine your prompt to break from the default.

Plan for latency: o1 can be slower, especially on large tasks. Consider using a background job or a notification system if you’re building an application on top of o1.

Wrapping Up

o1’s capabilities open up new ways of tackling complex tasks and thoughtful reasoning — but it requires fresh prompting strategies. Shift your mindset from chat-based Q&A toward providing thorough context, clearly-stated requirements, and minimal instructions on process. Let o1 handle the reasoning. Try these tips, experiment with your own, and find the sweet spot that fits your workflow.

Ready to try it yourself?

Provide o1 with all the relevant background info, clarify the output you need, then request multiple solutions or a self-check. With practice, you’ll experience how o1 can generate well-reasoned, single-shot answers to your most challenging problems.

References