OpenAI o-series (Reasoning)

Master OpenAI's reasoning models: o1, o3, o4. Learn the chain-of-thought-as-a-service paradigm, when reasoning models beat regular ones, and cost-optimization patterns.

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6

Lessons

💻

Code Examples

✅

Production-Ready

100%

Free

Lessons in This Model

Work through these 6 lessons in order, or jump to whichever topic you need most.

o-series Overview

Beginner

o3 and o4 Deep Dive

Advanced

Reasoning Effort Parameter

Intermediate

When Reasoning Beats Regular

Intermediate

o-series Cost Optimization

Intermediate

o-series in Production

Advanced