openai-python v3.21.0 adds GPT-6.1 Sol model identifier
openai-python v3.21.0 includes a GPT-6.1 Sol model identifier (commit 160b2c0). Published 2026-09-29.
What changed
Added GPT-6.1 Sol model identifier to API (commit 160b2c0, #3986).
Why it matters
Developers can reference the GPT-6.1 Sol identifier in openai-python calls.
Who should care
DevelopersResearchersEnterprises
Worth trying
Yes — Update to v3.21.0 to get the GPT-6.1 Sol model identifier.