Creuto: AI Technology & Product Insights
Stay informed with practical insights from the Creuto team on artificial intelligence, custom software, mobile applications, SaaS development, product engineering, technology trends, and digital transformation.
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ChatGPT ads: what the OpenAI Ads API lets brands build
ChatGPT ads come with an Advertiser API, a product feed in OpenAI's own schema and a new Measurement Pixel. What the docs say e-commerce brands need in place before a campaign can optimise for sales.
Akash Mohapatra
Sep 21, 2026
OpenAI 429 error: slow_down is not the rate limit you think
Since 2 September, OpenAI returns a 429 slow_down when traffic ramps too fast, even under your limits, and a 503 server_is_overloaded when a model lacks capacity. How to tell them apart and retry correctly.
Akash Mohapatra
Sep 21, 2026
GPT-5 deprecation on 11 December: gpt-5 and o3 to GPT-5.6
On 11 December 2026 OpenAI removes gpt-5, gpt-5-mini, gpt-5-nano, gpt-5-pro, o3 and o3-pro. Here is the replacement map, the per-token price change on each row, and a test plan for the weeks left.
Akash Mohapatra
Sep 21, 2026
OpenAI data residency in India and the UAE: what stays local
OpenAI's India endpoint stores your data locally but can process it elsewhere; the UAE endpoint processes in-region for four models after extra approval. Here is what each option guarantees, what it costs and how to design around the gaps.
Akash Mohapatra
Sep 21, 2026
Prompt caching: the cheapest LLM cost cut most apps miss
Cached input costs a tenth of normal input on current OpenAI models, but cache writes cost 25% more. How prompt caching works, why it misses, and a worked saving from published prices.
Akash Mohapatra
Sep 21, 2026
ChatGPT workspace agents or a custom build on the OpenAI API?
ChatGPT workspace agents handle most internal workflows without a build, and their API can start a run but not return the answer. Here is where a custom build on the OpenAI API starts to earn its cost.
Akash Mohapatra
Sep 21, 2026
GPT-Live-1 pricing: what a $0.05-a-minute voice agent costs
GPT-Live-1 charges $0.05 a minute for the voice and bills the backend model separately. We work out a real per-call cost, cover phone lines, and explain what the gpt-realtime and whisper-1 shutdowns mean.
Akash Mohapatra
Sep 21, 2026
GPT-4 shutdown on 23 October: the migration map
On 23 October 2026 OpenAI shuts down gpt-4, gpt-3.5-turbo, o1, o3-mini, o4-mini and more. Here is the full substitute table, the price change for each move and the gotchas that break quietly.
Akash Mohapatra
Sep 21, 2026
OpenAI fine-tuning deprecated: what to use instead in 2026
OpenAI is closing self-serve fine-tuning in stages, and fine-tunes on o4-mini and GPT-4.1 nano stop on 23 October. The timeline, costed alternatives and how to pick one.
Akash Mohapatra
Sep 21, 2026
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