OpenAI Go SDK v3.66.0 adds GPT-Rosalind research model and GCP external storage
OpenAI released openai-go v3.66.0 on September 23, 2026. The Go SDK update adds API support for a GPT-Rosalind research model and GCP external storage, and clarifies the Chat Completions seed range. The release carries a new-capability and compatibility impact signal.
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