[AINews] OpenAI shuts off Cursor
OpenAI cut off API access to coding tool Cursor after its SpaceX acquisition, citing contract violations by Elon Musk's companies.
OpenAI disabled Cursor's access following the closing of Cursor's acquisition by SpaceX, citing its experience with Elon Musk's companies violating contracts; Cursor responded that OpenAI accounts for only 5% of its traffic. The weekly digest also covers major open-weight releases: Z.ai's GLM-5.3 (744B total/40B active, 1M context) and Tencent's Hy4-preview (770B/49B, ~#5 on Code Arena WebDev), plus Alibaba's Qwen3.8-Flash (125B/6B). vLLM published benchmarks showing no universal winner among speculative decoding methods across model families.
- OpenAI cited 'Elon Musk's companies violating contracts' for cutting off Cursor
- Cursor says OpenAI models drive only ~5% of its traffic
- Z.ai open-weighted GLM-5.3: 744B total/40B active, 1M context
- Tencent's Hy4-preview (770B/49B MoE) leads SWE-bench Pro per reports
- vLLM finds speculative decoding choice depends on model and workload
- AI models
- GLM-5.3Hy4-previewQwen3.8-Flash
From the original article
12 min read at latent.space
A late entrant in the news cycle of an eventful week: Following the closing of Cursor’s acquisition by SpaceX last week , it was time for OpenAI to do what Anthropic did to Windsurf when it was being considered for acquisition by OpenAI: There are many angles to this, but the leading reason given should be taken at face value — OpenAI’s blogpost on this decision cites “our experience with Elon Musk’s companies…
latent.space
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