What changed: OpenAI reduced the number of API usage tiers from five to three: Build, Launch, and Grow. Organizations automatically upgrade to the next tier once their total credit purchases reach that tier's minimum. Monthly usage limits and rate limits are now set according to these three tiers.
Who is affected
The source states this applies to organizations using the OpenAI API; it does not specify any sector or size restriction.
What it means for your business
For businesses using the OpenAI API, this means their account's tier structure changes, and monthly usage limits plus per-model rate limits are now determined under the new three-tier system.
What to do
Check your account's current tier against the new Build, Launch, and Grow tiers on OpenAI's usage tiers page, and review your per-model rate limits accordingly.
When it takes effect
October 6, 2026 (the date this entry was published in OpenAI's API changelog).
Source: https://developers.openai.com/api/docs/changelog#2026-10-06
