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Working with the OpenAI APIvsMicrosoft Azure AI Fundamentals (AI-900) prep

Side-by-side comparison on level, duration, pricing, instructor, tier. Editor verdict on which course wins for which buyer.

DC
DataCamp

Working with the OpenAI API

Tightest paid intro to the OpenAI API on the market. Three hours, in-browser sandbox, covers chat completions, function calling, fine-tuning basics, embeddings, and Whisper. The $25/mo subscription pays back if you take 3+ DataCamp courses; for this one alone, the free OpenAI Cookbook covers ~80% of the same ground. Take the paid version when you need the structured curriculum and grading.

MS
Microsoft Learn

Microsoft Azure AI Fundamentals (AI-900) prep

The free prep path for AI-900 — Microsoft's foundational AI certification. Covers Azure AI services (Cognitive Services, Azure OpenAI, vision, language) at a vocabulary-building depth. Free to learn; $99 to take the exam. Worth it for non-engineers at Azure shops who need a cert; skippable for engineers who don't care about Azure-specific signal.

Side-by-side

DimensionWorking with the OpenAI APIMicrosoft Azure AI Fundamentals (AI-900) prep
ProviderDataCampMicrosoft Learn
Editorial tierCuratedListed
LevelBeginnerBeginner
Formatinteractiveself paced
Duration3 hours (interactive)~20-25 hours
Pricing$25/moFree
InstructorJames Chapman — DataCamp Curriculum ManagerMicrosoft Learn team — Microsoft
Rating★ 4.7 (890 on DataCamp)No public rating
Topicsllm fundamentals, prompt engineering, ai engineeringllm fundamentals, ai for business, computer vision
Last verified2026-05-242026-05-24

Pros & cons

Working with the OpenAI API
Pros
  • +In-browser sandbox — zero environment setup
  • +Structured curriculum + grading speeds learning vs raw docs
  • +Covers the full surface: chat, functions, fine-tune, embeddings, audio
Cons
  • −Locked behind $25/mo subscription
  • −Free OpenAI Cookbook covers most of the same ground
Microsoft Azure AI Fundamentals (AI-900) prep
Pros
  • +Free, structured prep for a recognized cert
  • +Foundational vocabulary works even outside Azure
  • +Microsoft Learn platform is well-built
Cons
  • −Azure-specific — recognition outside Microsoft partner ecosystem is limited
  • −Cert exam costs $99 separately
  • −Foundational only — not engineering-grade

Which course is for whom?

Working with the OpenAI API
Best for
  • · Self-paced learners who want grading + immediate feedback
  • · DataCamp subscribers already taking adjacent courses
Not ideal for
  • · Solo learners on a budget — use OpenAI Cookbook instead
Microsoft Azure AI Fundamentals (AI-900) prep
Best for
  • · Non-engineers at Azure-heavy enterprises needing a cert
  • · Career-switchers wanting an accessible first AI credential
Not ideal for
  • · Engineers wanting hands-on building — wrong scope

Editor's short verdict

Take Working with the OpenAI API first — it's our Tier-1 pick on this topic and the editorial confidence is higher. Microsoft Azure AI Fundamentals (AI-900) prep is a reasonable alternative if you've already taken or evaluated the Tier-1 option.

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Working with the OpenAI API vs Microsoft Azure AI Fundamentals (AI-900) prep (2026): which course wins? · AI Agent Rank