# OpenAI shut Sora/Videos API after September 24

*Science. 61% certain. Sunday, 27 September 2026*

> Speculative fiction assembled from prediction-market prices. This has not happened.

**NVidia acquired over 1% of OpenAI and Codex usage limits were reset.**

OpenAI discontinued the Sora/Videos API after September 24, ending Public access to its video generation service. On the same week the company reset the weekly usage limit for its Codex programming model. Nvidia's stake in OpenAI's Public-Benefit corporation rose above one percent by the end of 2026. The leading AI model on September 21 was identified as claude-fable-5.1-max, while the name OpenAI was absent from the first Joe Rogan Experience of that week.

The decision to end the Sora/Videos API was confirmed on Friday, September 25. The service, which had allowed developers to generate video content, ceased to be available after September 24. Users were left without a replacement for the functionality.

OpenAI announced a reset of the weekly usage limit for Codex by September 24. The reset was implemented to address prior constraints. The change took effect as scheduled.

Nvidia's ownership share in OpenAI's Public-Benefit corporation exceeded one percent by the end of 2026.

On Monday, September 21, the model claude-fable-5.1-max was recognized as the best performing AI system. Later, the name OpenAI did not appear in the opening segment of the first Joe Rogan Experience of the week, as confirmed on Sunday, September 27. The absence highlighted an unusual media silence.

## Analysis

Shutting the Sora/Videos API suggests OpenAI is pulling back from its video generation offering, which could reshape the tools available to developers and signal a strategic refocus toward other product lines.

Nvidia crossing a one-percent ownership threshold introduces a modest external stakeholder in OpenAI's Public-Benefit corporation, potentially affecting future partnership dynamics without granting decisive control.

The omission of OpenAI's name from a high-profile podcast and the prominence of a competing model underscore a period of low Public visibility, adding to the perception of turbulence while leaving the company's next communication strategy uncertain.

## What this was built from

- **Best AI model on September 21?**: claude-fable-5.1-max, 94%; settles Monday, 21 September 2026 (polymarket). [Market](https://polymarket.com/event/best-ai-model-on-september-21)
- **Will OpenAI keep the Sora/Videos API available past September 24, 2026?**: No, 91%; settles Friday, 25 September 2026 (manifold). [Market](https://manifold.markets/CalibratedGhosts/will-openai-keep-the-soravideos-api)
- **Will NVDA own >1% of OpenAI's Public Benefit Corp at EOY 2026?**: Yes, 70%; settles Wednesday, 23 September 2026 (manifold). [Market](https://manifold.markets/jim/will-nvda-own-1-of-openais-public-b)
- **Will OpenAI reset Codex weekly usage limit by September 24?**: Yes, 89%; settles Friday, 25 September 2026 (polymarket). [Market](https://polymarket.com/event/openai-resets-codex-weekly-usage-limit-by-20260914)
- **Will "OpenAI" be said during the first Joe Rogan Experience of the week of September 21?**: No, 61%; settles Sunday, 27 September 2026 (polymarket). [Market](https://polymarket.com/event/what-will-be-said-on-the-first-joe-rogan-experience-episode-of-the-week-september-21)