AI Model Radar: Confirmed Releases and Rumor Status
A sourced September 6, 2026 snapshot of Astra, Fable 5.1, Gemini 3.8 Flash and Grok 4.6, with restricted and unconfirmed status clearly labeled.
For newer product developments, read the September 21 briefing. The entries below retain their individual source-check dates. A dated editorial snapshot checked September 6, 2026. This page does not update automatically. Confirmed means a documented announcement, not access for every account. Restricted access and unconfirmed future releases remain separate.
GPT-6 Astra
Status: Confirmed. Verified September 6.
Listed in OpenAI’s model reference for complex work. Tool access depends on the environment.
OpenAI: GPT-6 Astra model reference
Claude Fable 5.1
Status: Confirmed. September 2026 announcement.
Officially introduced by Anthropic. Check current access for your account.
Anthropic: introducing Fable 5.1 and Mythos 5.1
Claude Mythos 5.1
Status: Restricted. September 2026 announcement.
Trusted-access arrangements and different safeguards; not ordinary unrestricted consumer availability.
Anthropic: introducing Fable 5.1 and Mythos 5.1
Gemini 3.8 Flash
Status: Confirmed. September 2, 2026.
Official announcement covers developer access and Google AI Pro and Ultra app access.
Google: Gemini 3.8 Flash and Flash Cyber, September 2
Gemini 3.8 Flash Cyber
Status: Restricted. September 2, 2026.
Prioritized access through the Fairwind Program. Separate from ordinary Flash access.
Google: Gemini 3.8 Flash and Flash Cyber, September 2
Grok 4.6
Status: Confirmed. August 12, 2026 API release.
API availability is documented. Consumer app availability must be checked separately.
Additional future flagship models
Status: Unconfirmed. Checked through September 6.
This edition has no verified primary announcement establishing additional future names or launch dates. No speculative calendar is presented.
Read the Astra and Fable 5.1 briefing | Create a comparison mission.
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