OpenAI API, the Developer Surface I Use Sparingly

The OpenAI API is the second-most-touched developer surface in my empire after Anthropic. I use it for two specific shapes of work: batch classification where GPT-5.4-mini's USD 0.15 input price wins, and structured output where OpenAI's JSON-schema enforcement is more reliable than tool-use fallbacks elsewhere.

GPT-5.4 (the flagship) I rarely use. The pricing is competitive but the quality difference versus Sonnet 4.6 is small enough that switching costs lose to consistency. My empire infrastructure (caching, retry logic, prompt templates) is calibrated for Anthropic; using OpenAI for one or two endpoints fragments the operational story.

Where OpenAI genuinely wins: structured outputs with the response_format JSON schema. When I need parsed JSON out of an LLM call without hand-rolling validation, GPT-5.4-mini is the most reliable cheap path. Anthropic's tool-use can do the same thing, but the developer ergonomics around structured outputs are cleaner on OpenAI.

The Sora video API is the other reason I keep an OpenAI key warm. The autokaam tutorial pipeline occasionally needs a 30-second product demo, and Sora through the API is the cleanest path to a watermark-free deliverable. Pricing is per-second, costs add up fast, but for one-off marketing assets it is reasonable.

The Indian-operator angle is the GST treatment. OpenAI charges 18 percent GST on Indian developer accounts, which the smart founders register and reclaim. The naive payments-from-personal-card path leaves you with a non-deductible expense. Worth the 30 minutes of paperwork.

What I would not do: build my entire empire on the OpenAI API. The empire bet is on Claude for coding and reasoning, with OpenAI as a tactical second source for structured output and image-video work. That bet has held up well across 2025-26.

If you are starting today and you have no incumbent vendor pull, evaluate Anthropic and OpenAI side-by-side for your specific workload. The right answer depends on your work, not the vendor's loud marketing.

Despite the strong Anthropic alternative, the OpenAI API remains a meaningful second source. Structured outputs and image/video APIs are the strongest reasons to keep a key warm even on Anthropic-primary stacks.