Model · Multimodal language model

GPT-6.1 Sol

The GPT-6.1 Sol release of September 29, 2026 for complex coding, computer use, and professional work at a lower cost than GPT-6 Astra, exposed as the gpt-6.1-sol name over OpenAI's managed developer API and Azure Foundry with no documented fixed dated snapshot on OpenAI's page and no downloadable weights.

Developer
OpenAI
Distribution
Developer API · Third-party hosting
Artifact licensing
Proprietary access
License scope
Reviewed release artifacts and mandatory terms; not an assessment of training code or training data openness.
Licenses
OpenAI Services Agreement
Boundary
This record represents the GPT-6.1 Sol release of September 29, 2026 as exposed under the gpt-6.1-sol name: OpenAI's model page lists the default snapshot and the snapshot inventory as gpt-6.1-sol with no dated snapshot, so applications cannot pin a dated revision through OpenAI, although Azure Foundry documents the version as gpt-6.1-sol (2026-09-29). It is a release with its own name, knowledge cutoff, reasoning-effort support, and cached-input price, so GPT-6 Sol is a separate record rather than an earlier snapshot of this one. GPT-6 Astra and Luna, the GPT-5.6 Sol tier, the pro reasoning mode selected with a request parameter, ChatGPT and Codex surfaces, fine-tuned derivatives, and later generations are separate service, application, or model boundaries.

Risk statements

“Critical” · Threshold reached

We determined that GPT-6.1 Sol reaches the Critical threshold for cybersecurity capabilities under the Preparedness Framework.
Risk areas
Cyber
Covers
The model itself

Read the developer's statement ↗ · 2026-10-09 · Research confidence: High

OpenAI states that this release reached “Critical” in cyber capability. The statement covers the model itself. This is the developer's own statement, not an Atlas risk rating.

Open in the directory → Open official model page ↗

Editorial ratings appear in the directory beside the profile they belong to and are never compared across collections.