An OpenAI API developer for product teams cares less about demos and more about operability: streaming UX, tool safety, embeddings for RAG, secret hygiene, and predictable spend.
1. Choose the right API shape
- Chat / Responses: assistants, drafts, Q&A
- Embeddings: retrieval and semantic search
- Moderation: abuse and policy gates
- Structured outputs: form fills and workflow payloads
2. Production wiring checklist
- Separate staging and production projects/keys
- Timeouts, retries, and 429 backoff via queues
- Stream to React when latency matters
- Validate tool arguments before side effects
- Track tokens per feature and tenant
3. Common product mistakes
Hardcoding one model forever. Logging full prompts with PII. Giving tools write access without approval. Sending giant contexts instead of retrieval. Shipping without a golden evaluation set.
4. Build vs framework
Direct SDKs are enough for many features. Add LangChain/LangGraph when orchestration, branching, or multi-step agents become the product. Prefer thin adapters so Claude or another provider can replace OpenAI later.
Summary
OpenAI API development is product infrastructure work. Treat keys, streaming, tools, and metering as first-class requirements.
Related: OpenAI API Development, LLM Application Development, Hire AI Developer.