Canonical AI event

GPT-6 model identifiers added to API in v3.18.0

New GPT-6 model identifiers for Sol and Luna added in v3.18.0.

22 Sept 20261 verified claims1 sources1 observations

What happened

The official source reports this update: v3.18.0. 3.18.0 (2026-09-22) Features api: add GPT-6 Sol and Luna model identifiers ( #3935 ) ( 455ce1b )

Why it matters

This official update documents a development concerning v3.18.0. Its practical significance depends on the scope and evidence stated by the source.

What to watch next

Read the official source update and verify its stated scope, evidence and timing before acting on it.

Connected knowledge

Entities affected by this event

Openai Pythonsubject

Continue this topic

agents-softwareSoftware update 3.16.2 fixes memory leak.18 Sept 2026 agents-softwareThe 3.16.1 update prevents loading unrelated API resources on first use.18 Sept 2026 agents-softwareVersion 3.16.0 of the API deprecates MCP connector_id.18 Sept 2026 agents-softwareVersion 3.15.0 introduces agent session model settings.18 Sept 2026 agents-softwareThe Live API is added to the 3.12.0 release.10 Sept 2026 agents-softwareNew expiration controls for service account keys added in v3.11.09 Sept 2026

Evidence trail

Sources behind the event

OpenAI Python library releasesv3.18.022 Sept 2026

Editorial presentation

Read the public story