Anthropic just dropped a new context engineering guide that's...
Matt Dancho (Business Science)@mdancho84
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Oct 25, 2025
~1 min read
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Anthropic just dropped a new context engineering guide that's absolutely killer.
Optimize for complex tasks, cut hallucinations, & boost reasoning.
This is what's inside (bookmark for later):
Optimize for complex tasks, cut hallucinations, & boost reasoning.
This is what's inside (bookmark for later):
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1. Structure Data Inputs:
Feed LLMs clean, modular contexts (e.g., JSON schemas) to reduce noise.
Pro tip: Preprocess with RAG to prioritize relevant info. Saves tokens & improves outputs by 15-20%.
Feed LLMs clean, modular contexts (e.g., JSON schemas) to reduce noise.
Pro tip: Preprocess with RAG to prioritize relevant info. Saves tokens & improves outputs by 15-20%.
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2. Cut Hallucinations:
Use explicit context boundaries & verification loops in prompts. Guide suggests grounding with external data checks.
For AI/ML Developers: Cuts false outputs by ~30% in long-form tasks like analyzing ML predictions.
Use explicit context boundaries & verification loops in prompts. Guide suggests grounding with external data checks.
For AI/ML Developers: Cuts false outputs by ~30% in long-form tasks like analyzing ML predictions.
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3. Boost Reasoning:
Chain contexts logically (e.g., problem → evidence → action).
The guide shows how to mimic human-like reasoning in agents. Test with multi-step tasks to see 10%+ accuracy gains.
Chain contexts logically (e.g., problem → evidence → action).
The guide shows how to mimic human-like reasoning in agents. Test with multi-step tasks to see 10%+ accuracy gains.
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4. Scale Smart:
Context engineering enables modular agent designs for production. Swap contexts dynamically based on task needs.
AI Data Scientists can use this to cut latency & scale to 1000s of queries for synthetic data by row in long description columns in SQL tables.
Context engineering enables modular agent designs for production. Swap contexts dynamically based on task needs.
AI Data Scientists can use this to cut latency & scale to 1000s of queries for synthetic data by row in long description columns in SQL tables.
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Here's the full guide from Anthropic: anthropic.com/engineering/ef…
I have one more thing before you go.
If you want to become a generative AI data scientist in 2025 ($200,000 career), then I'd like to help:
I have one more thing before you go.
If you want to become a generative AI data scientist in 2025 ($200,000 career), then I'd like to help:
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On Wednesday, October 29th, I'm sharing one of my best AI Projects:

How I built an AI Customer Segmentation Agent with Python
👉Register here (740+ Registered): learn.business-science.io/ai-register

How I built an AI Customer Segmentation Agent with Python
👉Register here (740+ Registered): learn.business-science.io/ai-register
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That's a wrap! Over the next 24 days, I'm sharing the 24 concepts that helped me become a data scientist.
If you enjoyed this thread:
1. Follow me @mdancho84 for more of these
2. RT the tweet below to share this thread with your audience
If you enjoyed this thread:
1. Follow me @mdancho84 for more of these
2. RT the tweet below to share this thread with your audience
Matt Dancho (Business Science)@mdancho84
Anthropic just dropped a new context engineering guide that's absolutely killer.
Optimize for complex tasks, cut hallucinations, & boost reasoning.
This is what's inside (bookmark for later):
Optimize for complex tasks, cut hallucinations, & boost reasoning.
This is what's inside (bookmark for later):
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P.S. I create AI + Data Science tutorials and share them for free. Your 👍 like and ♻️ repost helps keep me going.