AI model releases in September 2026
17 releases from 10 labs in September 2026, newest first.
Gemini 4 Argon
Google DeepMind · Google DeepMind · Gemini 4 Argon
GPT-6.1 Sol
OpenAI · OpenAI · GPT-6.1 Sol
Claude Sonnet 5.5
Anthropic · Anthropic · Claude Sonnet 5.5
GPT-6 Sol
OpenAI · OpenAI · GPT-6 Sol & Luna
GPT-6 Luna
OpenAI · OpenAI · GPT-6 Sol & Luna
Claude Opus 5.5
Anthropic · Anthropic · Claude Opus 5.5
Grok 4.7
xAI · xAI · Grok 4.7
Kimi K2.8 Preview
Moonshot AI · Kimi Code · What's new
DeepSeek V4.1 Flash
DeepSeek · DeepSeek · Change Log
GPT-6 Astra
OpenAI · OpenAI · GPT-6 Astra
Gemini 3.8 Flash
Google DeepMind · Google · Gemini 3.8 Flash
