# GPT-5.6 Sol Fast spotted on Vercel AI Gateway

GPT-5.6 Sol Fast from OpenAI was first recorded on 19 Sep 2026. Its release date is not established. 2 evidence links.

- Kind: Sighting
- Developer: OpenAI
- Confidence: Observed
- First seen: 2026-09-19T05:45:49.173Z
- Model: [GPT-5.6 Sol Fast](https://alexgetman.com/models/openai/gpt-5-6-sol-fast/)
- Canonical: https://alexgetman.com/signals/2026/09/19/gpt-5-6-sol-fast/

## Evidence links

- [Vercel AI Gateway](https://vercel.com/ai-gateway)
- [models.dev · catalogue](https://models.dev/#gpt-5.6-sol-fast)